Quick Answer
St. Augustine grass in Florida needs 0.5 to 1.0 inch of water per week total—counting both irrigation and rainfall—applied in one or two deep sessions rather than short daily sprints. Most lawns in St. Johns County run on a twice-per-week schedule during the warm season under SJRWMD rules, dropping to once a week or less as rainfall increases from June through September. The biggest mistake homeowners make is running sprinklers too often and too briefly, which keeps the top inch of soil perpetually damp, encourages shallow roots, and sets the stage for fungal disease in Florida's humid subtropical climate. Get the depth right—half an inch per session—and your Floratam or Palmetto sod will push roots down into the sandy coastal soil where they can access moisture between cycles on their own.
Key Takeaways
- Apply 0.5–1.0 inch of water per week total (irrigation + rainfall); split into one or two sessions, not daily short bursts.
- SJRWMD year-round restrictions limit most residential addresses to two assigned watering days per week; check your day by address at sjrwmd.com.
- Always water between midnight and 10 a.m. to reduce evaporation and dramatically cut fungal disease risk in Florida's humid climate.
- Use the tuna-can test to calibrate your system: place cans in each zone and run until you collect 0.5 inches, then note the runtime.
- Sandy North Florida soils drain fast—split each 0.5-inch application into two shorter passes (cycle-and-soak) to prevent runoff.
- Florida law (F.S. 373.62) requires a functioning rain sensor or soil moisture sensor on all automatic irrigation systems.
- Cut back irrigation significantly November through February; dormant or slow-growing St. Augustine needs far less water than it does in summer.
Table of Contents
- SJRWMD year-round watering restrictions
- Deep and infrequent: the right philosophy for Florida
- Calibrating your system: the tuna-can test
- Morning watering and avoiding fungal disease
- Sandy-soil runtime math and cycle-and-soak
- Rotor vs. spray vs. drip: which head for St. Augustine
- Florida's rain sensor requirement (F.S. 373.62)
- Seasonal watering adjustments: May–Sept vs. Nov–Feb
- Snowbird and away programs: keeping turf alive while you travel
- Signs of over- and under-watering, and how to reset your controller
SJRWMD Year-Round Watering Restrictions
The St. Johns River Water Management District (SJRWMD) enforces year-round landscape irrigation restrictions across St. Johns County and most of Northeast Florida. Unlike some water districts that relax rules in winter, SJRWMD maintains its restrictions 365 days a year because the aquifer system doesn't get a seasonal break from demand.
Under the current rules, most residential properties with even-numbered addresses water on Thursday and Sunday; odd-numbered addresses water on Wednesday and Saturday. Reclaimed-water customers may have different designated days. Commercial and HOA systems often operate on Tuesday and Friday. These days can shift if your municipality has a specific local ordinance layered on top of SJRWMD's district-wide rules, which is why the definitive check is always your address lookup at the SJRWMD website (sjrwmd.com) or through St. Johns County Utility Services.
The time window matters as much as the day. Irrigation must be completed by 10 a.m. or started after 4 p.m.—but morning watering is far preferable for turf health, as discussed later. Running a sprinkler at noon on a sunny Florida day can waste 30–50% of applied water to evaporation before it reaches the root zone.
Daylight saving time changes affect the start of the 10 a.m. cutoff only in terms of clock time—the rule is based on clock time, not solar time. When clocks spring forward in March, your controller program needs to be verified so it still finishes before 10 a.m. Many controllers drift or lose programming after power outages, which is one reason a mid-season check of your timer settings is worth putting on the calendar. Lawnshark's team regularly finds controllers in SilverLeaf and Shearwater neighborhoods running at completely wrong times after a storm knocked out power.
- Even addresses: Thursday and Sunday.
- Odd addresses: Wednesday and Saturday.
- Reclaimed water: check with your utility provider for your specific day assignments.
- Commercial/HOA: typically Tuesday and Friday.
- Cutoff: all irrigation complete by 10 a.m., or started no earlier than 4 p.m.
Deep and Infrequent: The Right Philosophy for Florida
The phrase deep and infrequent sounds simple, but it runs against the instinct of many homeowners who assume more frequent watering equals a healthier lawn. In Florida's humid subtropical climate, frequent shallow watering is one of the fastest ways to weaken St. Augustine grass. Here's why: when the top inch of soil is always moist, roots never need to extend downward. The lawn becomes dependent on irrigation rather than building the deep root system that lets it handle heat stress, brief dry spells, and the dramatic wet-to-dry swings that North Florida routinely delivers.
UF/IFAS turf research consistently points to 0.5–1.0 inch of water per week as the target for St. Augustine grass under Florida conditions. During the rainy season (June through September), natural rainfall in St. Johns County often delivers 6–8 inches per month—meaning your irrigation system should barely run at all in a typical summer week. The SJRWMD Smart Irrigation Controller rebate program exists precisely to help homeowners match system output to actual evapotranspiration demand rather than running on a fixed schedule regardless of rainfall.
Practically, deep means applying enough water to wet the soil 4–6 inches down where St. Augustine roots actively grow. In sandy coastal soil, that usually requires about 0.5 inches applied per session. Infrequent means waiting until the lawn actually shows early wilt signs—a blue-gray tinge to the grass blades, or footprints that don't spring back—before triggering the next cycle. Training yourself to water on cue rather than on a fixed daily timer is the single most effective habit shift a Florida homeowner can make.
- Target depth: wet the top 4–6 inches of soil per session.
- Volume target: 0.5 inches per session, 1–2 sessions per week maximum during dry months.
- Rainy season: skip irrigation entirely when rainfall meets weekly demand; use a rain sensor to automate skips.
- Trigger sign: water when blades show blue-gray color or footprints remain visible for more than 30 seconds.
Calibrating Your System: The Tuna-Can Test
Knowing how long to run each irrigation zone is impossible without calibrating your specific system. Rotor heads, spray heads, and micro-drip all apply water at very different rates, and two zones in the same yard can deliver the same 0.5 inches in wildly different runtimes depending on head spacing and pressure. The tuna-can test—also called the catch-can test—is the standard UF/IFAS-recommended method and costs nothing.
How to do the tuna-can test:
- Collect 5–6 empty tuna cans or straight-sided containers of uniform depth (standard tuna cans are about 1 inch deep, making measurement easy).
- Place the cans in a grid pattern across one irrigation zone—near the heads, midway between heads, and at the far edges.
- Run that zone for a known time, such as 15 minutes.
- After the cycle, measure the water depth in each can with a ruler.
- Average the measurements. If you collected 0.25 inches in 15 minutes, you need to run that zone 30 minutes to apply 0.5 inches.
- Repeat for every zone, since rotor zones typically need 45–60 minutes to apply 0.5 inches while spray zones may need only 20–25 minutes.
A rain gauge installed in an open area of the lawn serves the same purpose for tracking natural rainfall. Once you know your zone runtimes and track rainfall, you can do simple weekly arithmetic: if 0.3 inches of rain fell on your Wednesday watering day, you only need to apply 0.2 more inches, cutting your runtime roughly in half. This kind of manual adjustment can save 20–30% of irrigation water in an average Florida summer.
If you find that catch-can measurements vary dramatically across a zone—say, 0.1 inches near one head and 0.6 inches near another—that points to a distribution uniformity problem. Common causes in St. Augustine-area homes include tilted or sunken heads, clogged nozzles, mixed head types in a single zone, or operating pressure outside the head's design range. These are exactly the kinds of issues our irrigation repair team diagnoses during a system inspection.
Morning Watering and Avoiding Fungal Disease
Florida's humidity is relentless from May through October, and St. Augustine grass is moderately susceptible to several fungal pathogens—most notably brown patch (Rhizoctonia solani) and gray leaf spot—that thrive when leaf blades stay wet for extended periods overnight. The single most effective cultural practice to reduce fungal pressure is to water in the early morning, finishing before 10 a.m., so that any moisture on the blades evaporates quickly as temperatures rise.
Evening or nighttime irrigation does the opposite: it keeps the canopy wet through the coolest part of the day, exactly the temperature and humidity window that favors fungal spore germination. In neighborhoods like World Golf Village and Nocatee, where Floratam lawns are dense and canopy airflow can be limited by privacy fences and dense plantings, evening watering can trigger brown patch outbreaks within days during peak summer conditions.
The SJRWMD rule allowing irrigation to begin at 4 p.m. exists to provide an alternative window for practical scheduling, but from a turf-health standpoint, the 4 p.m.–10 p.m. window is the riskiest time to water in summer. If afternoon-start watering is unavoidable, at least ensure the system finishes early enough in the evening to allow canopy drying before nightfall—though this is difficult in June through September when sunset arrives late and dew forms early.
- Best window: midnight to 8 a.m. (blades dry before the heat of the day).
- Acceptable: 8 a.m. to 10 a.m. cutoff, especially if the system finishes with time for drying.
- Avoid: watering between 10 a.m. and 4 p.m. (evaporation waste) or late evening (fungal risk).
- Early-sign check: if you see circular tan or brown patches developing in your St. Augustine lawn during summer, the pattern often indicates a combination of overwatering and poor morning-dry timing—not drought.
Lawnshark's lawn maintenance crews often notice the first signs of fungal stress during routine visits. Catching it early—before a large area of sod is compromised—keeps remediation simple. Adjusting the irrigation schedule is almost always the first corrective step before any other intervention is considered.
Sandy-Soil Runtime Math and Cycle-and-Soak
Most of St. Johns County sits on sandy coastal soils with low clay content and high percolation rates. That's actually an advantage in many ways—roots get oxygen, the lawn recovers quickly after rain events, and you rarely deal with the waterlogged conditions that plague heavier soils. But it creates one specific irrigation challenge: sandy soil can only absorb water so fast before runoff occurs. If you try to apply 0.5 inches all at once with high-precipitation-rate spray heads, you'll often see water sheeting off the surface or pooling at the curb long before the soil is actually saturated to root depth.
The solution is cycle-and-soak programming, which splits each zone's target runtime into two or three shorter passes with 45–60 minutes of rest between passes. During the rest period, water from the first pass percolates downward. When the second pass runs, it finds soil that is already partially saturated near the surface and can continue wetting the profile deeper without generating runoff.
A practical example for a spray zone that needs 30 minutes to apply 0.5 inches: instead of one 30-minute run, program two 15-minute runs with an hour gap between them. The runtime total is the same, but the soil absorption is far more efficient and there's negligible surface runoff even in very sandy areas like Anastasia Island or the coastal reaches of Vilano Beach.
- Spray heads: precipitation rate roughly 1.5–2.5 inches/hour; prone to runoff in sandy soil if run continuously for more than 10–15 minutes.
- Rotor heads: precipitation rate roughly 0.4–0.6 inches/hour; lower runoff risk, but longer total runtime needed to reach 0.5 inches.
- Cycle-and-soak: split any zone runtime longer than 15 minutes into two passes with a 45–60 minute soak interval.
- Slope zones: any zone on a slope or near a curb benefits from shorter cycles regardless of head type.
Most modern irrigation controllers support cycle-and-soak natively, sometimes called smart cycle or multiple start times. If your controller is more than 10 years old and lacks this feature, it's worth considering an upgrade to a Wi-Fi-enabled smart controller that can manage cycle-and-soak automatically and also pull local weather data to skip unnecessary cycles.
Rotor vs. Spray vs. Drip: Which Head for St. Augustine
St. Augustine is a high-water-demand turfgrass compared to Bahia or Zoysia, and it grows in dense, spreading mats—which means it needs fairly uniform coverage across the full turf area. Understanding how different head types perform helps you troubleshoot dry spots and dead zones without assuming something is broken when it may just be mismatched.
Rotor heads (gear-driven or impact) rotate through an arc and apply water slowly, making them well-suited to large open turf areas. Their low precipitation rate works naturally with sandy soils—less runoff risk even in a single long pass. Most residential rotors cover radii of 15–45 feet, so they're the right choice for wide front yards, back lawn areas, and any zone where run distances are long. The tradeoff is that they take longer to apply a given depth, so runtimes are measured in 45–60 minutes rather than 20–25.
Fixed spray heads apply a full arc of water simultaneously at higher precipitation rates, making them ideal for smaller, irregular turf areas, narrow strips between sidewalks and curbs, and zones where rotors would overshoot onto hardscape. Because they apply water faster, cycle-and-soak is almost always necessary in St. Johns County's sandy soil. Never mix rotors and spray heads in the same irrigation zone—their precipitation rates are so different that one type will be overwatering while the other underwatering.
Drip irrigation is not generally used for large St. Augustine turf areas but is excellent for planting beds, tree rings, and foundation shrubs. If your irrigation system has zones dedicated to landscape beds adjacent to your St. Augustine lawn, converting those to drip reduces overall water use and prevents overwatering the turf edge from a high-precipitation bed zone. Drip emitters deliver water directly to the root zone of individual plants with virtually no evaporation loss.
- Large St. Augustine turf areas: gear-driven rotor heads, matched precipitation rate across zone.
- Narrow turf strips and irregular shapes: fixed spray heads with cycle-and-soak programming.
- Planting beds and shrubs: drip or micro-spray, run on a separate zone with different runtime.
- Never mix: rotors and spray heads on the same zone—precipitation rate mismatch guarantees uneven application.
If you're seeing persistent dry patches in St. Augustine that don't resolve with longer runtimes, the issue is often head spacing (coverage gaps), head tilt (sunken below grade after soil settling), or a partially clogged nozzle. These are quick fixes during a professional inspection. For homeowners dealing with recurring irrigation issues, our team provides irrigation repair in St. Augustine and can evaluate distribution uniformity across every zone.
Florida's Rain Sensor Requirement (F.S. 373.62)
Florida Statute 373.62 requires that any automatic lawn irrigation system installed after May 1991 be equipped with a functioning rain sensor or soil moisture sensor that overrides the irrigation controller when sufficient rainfall has occurred. This is not a suggestion—it's a legal requirement across the entire state, and St. Johns County code enforcement can cite homeowners for a malfunctioning or bypassed sensor.
The most common type is a wireless rain sensor mounted on a roof edge, fence post, or fascia board in an open area that receives unobstructed rainfall. When a threshold of rainfall is collected—typically 0.125 to 0.5 inches, adjustable on most models—the sensor sends a signal to the controller that bypasses the scheduled program until the sensor dries out. Once the sensor dries, the controller resumes its normal schedule.
Many homeowners discover their sensor is no longer functional only when they notice the system running during or right after a rainstorm. Common failure points include a corroded sensor disc that no longer swells when wet, a faulty wireless transmitter, or a receiver wired incorrectly to the controller's sensor bypass terminals. Some installers wire the sensor to an on bypass terminal rather than the normally closed terminal, effectively disabling it permanently while it appears connected.
Soil moisture sensors are a newer alternative that measure actual soil water content at root depth and bypass irrigation more intelligently than a rain sensor. They prevent irrigation when soil is already wet—even if no rain fell but humidity was high enough to keep the profile moist—and allow irrigation to run when soil dries to a set threshold even on a non-scheduled day (if the water district rules allow flexibility). Smart controllers paired with soil moisture sensors represent the most water-efficient option available for St. Augustine lawns in Florida.
- Legal requirement: F.S. 373.62 mandates rain or soil moisture sensor on all automatic systems.
- Quick test: manually press and hold your rain sensor disc; your controller should show sensor active or rain delay and not run zones.
- Replacement cost: wireless rain sensors typically run $25–$75 in parts; installation is straightforward during a service visit.
- Soil moisture sensors: more accurate than rain sensors, pair well with smart controllers for maximum water savings.
Seasonal Watering Adjustments: May–Sept vs. Nov–Feb
A single fixed irrigation schedule running every week of the year is almost always wrong for St. Augustine grass in Florida. The humidity, evapotranspiration rate, rainfall frequency, and grass growth rate all shift dramatically between seasons—and your irrigation controller should shift with them. The two most important seasonal pivots are the ramp-up entering the hot-and-dry shoulder of spring (May into early June) and the cutback entering the cooler, slower-growth period of late fall and winter.
May through September is when St. Augustine grows fastest and temperatures push evapotranspiration to its annual peak. Before the summer rainy season reliably establishes (usually mid-June in St. Johns County), May can be one of the driest months of the year with high heat. This is when your irrigation system genuinely needs to deliver its full 0.5–1.0 inch per week. Once the rainy season kicks in, shift to monitoring mode: use a rain gauge or smart controller weather data to determine how much natural rainfall is occurring before each scheduled irrigation day, and skip cycles freely when rainfall exceeds 0.5 inches in the prior few days.
November through February is the period when St. Augustine growth slows to near-dormancy in response to shorter days and cooler temperatures, even in North Florida's mild zone 9a climate. Water demand drops substantially—UF/IFAS guidance suggests once-per-week irrigation or less during this period, with many lawns needing no supplemental water at all during wet winters. Running a summer-calibrated schedule in January wastes water, increases disease risk, and can suppress natural cold-hardening of the turf.
- May (pre-rainy season): run full schedule, 0.5 inches per session twice per week if no rain.
- June–September (rainy season): monitor rainfall, skip cycles when 0.5+ inches received in prior 48 hours.
- October–November: reduce to once per week; watch for morning frost windows in late November.
- December–February: reduce to once per week or suspend; water only if grass shows wilt signs during a dry spell.
- March–April: ramp back up gradually as growth resumes; calibrate before the May dry stretch.
Smart controllers with a seasonal adjustment or ET (evapotranspiration) mode will handle much of this automatically by scaling runtimes up or down based on weather data. Setting a seasonal adjustment percentage on a conventional controller—such as 50% from December through February and 100% from May through September—is a simple manual alternative that takes about two minutes to program and can cut annual water consumption significantly.
Snowbird and Away Programs: Keeping Turf Alive While You Travel
St. Augustine, FL has a substantial snowbird population—homeowners who spend winter months in residence and summer elsewhere, or who leave for extended periods during hurricane season. An unmonitored irrigation system running on an incorrect schedule while no one is home is one of the most common sources of turf damage and water waste we see across neighborhoods like Beacon Lake, Murabella, and SilverLeaf. A few key steps before any extended absence can make the difference between a healthy lawn waiting at your return and an expensive re-sod project.
Before you leave, walk every zone and confirm each head is operating correctly—no broken or tilted heads spraying onto driveways or missing large sections of turf. Verify the rain sensor is functional (press the disc; controller should show rain delay). Confirm your controller's schedule matches the current season: if you're leaving in late October, program a winter schedule before departure rather than leaving a summer schedule running through December.
For extended absences, a neighbor, property manager, or lawn maintenance professional who can do a monthly walkthrough is invaluable. An irrigation head broken by a lawn mower striking it can waste hundreds of gallons per cycle and create dead zones within two weeks in summer heat. If you subscribe to a lawn maintenance plan, our crews visually inspect irrigation heads during each visit and flag issues before they compound.
Wi-Fi-enabled smart controllers offer the most robust remote management. Many models allow you to view the schedule, make adjustments, pause or skip cycles, and receive alerts for abnormal flow (indicating a broken head) via a smartphone app from anywhere in the world. If you split time between Florida and another state, a Wi-Fi controller pays for itself quickly in water savings and avoided turf repair costs.
- Before leaving: walk all zones, verify rain sensor, set a season-appropriate schedule.
- Winter program: reduce to once per week or suspend entirely for December–February; resume in March.
- Remote monitoring: Wi-Fi controller apps allow schedule changes and flow alerts from out of state.
- Local check: arrange a monthly irrigation walkthrough with your lawn service during absences longer than 4–6 weeks.
Signs of Over- and Under-Watering, and How to Reset Your Controller
St. Augustine grass communicates its water status clearly if you know what to look for. Both overwatering and underwatering damage the turf, but they look different and respond to different corrections—so accurate diagnosis before adjusting your schedule prevents swinging from one problem to the other.
Signs of underwatering: Blades fold lengthwise along the midrib (the leaf rolls inward to reduce surface area). The color shifts from bright green to a dull blue-gray. Footprints remain visible in the turf for 30 seconds or more after you walk across it because the wilted blades don't spring back. If prolonged, blades begin to yellow from the tip inward and dry sections may develop a straw-brown color. In St. Johns County's well-drained sandy soils, underwatering symptoms can appear within 2–3 days during a May heat event with no rainfall.
Signs of overwatering: Circular or irregular tan-to-brown patches that expand over days, often with a darker water-soaked ring at the perimeter—classic brown patch fungal signature. Excessively soft, spongy soil when you walk the lawn. Algae or moss growth in shaded low spots. Frequent weed pressure from sedges and other moisture-loving species invading wet turf edges. Blades that appear lush and dark green but pull up easily, revealing very short, shallow roots that never had reason to grow downward. Overwatered St. Augustine in neighborhoods like Trailmark and Palencia often shows fungal symptoms within a week of prolonged wet conditions in summer.
Resetting your irrigation controller: Most controller resets follow a similar sequence, though the exact steps vary by brand. In general: (1) locate the reset button or factory reset menu option, (2) after resetting, re-enter the current date and time carefully—DST transitions are a common source of drift, (3) re-enter each zone's runtime based on your tuna-can calibration results, (4) enter your two watering days per SJRWMD rules, (5) set a start time that ensures the program finishes before 10 a.m., (6) enable any cycle-and-soak or smart cycle feature, and (7) confirm the rain sensor bypass wire is connected correctly to the sensor terminal (not the bypass terminal).
- Underwatering signs: blade fold/roll, blue-gray color, footprints visible 30+ seconds, tip yellowing.
- Overwatering signs: brown patch circles, spongy soil, algae in low spots, shallow roots, sedge invasion.
- Controller reset steps: reset, set date/time, enter zone runtimes, set watering days, set start time before 10 a.m., enable cycle-and-soak, verify rain sensor wiring.
- After reset: run a manual test of each zone to confirm heads are operating and coverage is complete before returning to automatic mode.
If you're unsure whether your system is delivering the right amount of water or if you're dealing with recurring turf problems that don't respond to schedule changes, a professional irrigation audit is the fastest path to a solution. Lawnshark's team serves homes throughout St. Augustine and St. Johns County—call 806-464-2771 (Mon–Sat, 7 a.m.–6 p.m.) to schedule an inspection. You can also read our related guide on irrigation repair in St. Augustine for common system failure diagnostics.
Need help from a licensed local crew? We offer irrigation repair in St. Augustine or lawn maintenance across St. Johns County, FL. Call 806-464-2771.
How this applies to your St. Augustine yard
Every piece of advice above has to be filtered through the reality of North Florida — USDA hardiness zone 9a, humid subtropical climate, sandy coastal soils, a long growing season, and an Atlantic hurricane season that runs June through November. A tactic that works in Atlanta or Dallas often falls apart in St. Johns County because the climate is genuinely different. The calendar works differently, the grass species work differently, the pests work differently, and the irrigation needs are wildly different from inland Southern lawns.
On the coast — St. Augustine Beach, Vilano Beach, Anastasia Island, Crescent Beach — salt-laden air is a factor that inland yards never deal with. Salt tolerance matters for every plant selection. West of I-95 in the master-planned communities (World Golf Village, Palencia, TrailMark, Shearwater, SilverLeaf, Murabella, Beacon Lake, Nocatee) the big factor is HOA standards and tree canopy from mature oaks and pines. In older St. Augustine and St. Augustine Shores, live oak canopy and established beds create their own micro-conditions. One size does not fit all across the 15-mile service radius we work inside.
Why a local St. Johns County crew matters
There is a real gap between a national or regional lawn company running generic playbooks and a local St. Augustine crew that knows which streets flood first in a summer downpour, which HOA in Palencia wants dark brown mulch versus which section of Nocatee approves pine straw, and which homes on Anastasia Island have well-water irrigation that stains driveways if the heads are misaimed. That local knowledge is the difference between a yard that looks okay and a yard that looks genuinely cared for.
Lawnshark Landscaping Inc. is based in St. Augustine, FL. Our trucks park here, our crews live here, and our 15-mile service radius is strict so we can actually run a tight schedule. We are fully licensed and insured, and certificates of insurance are emailed directly to HOA property managers before the first visit on any HOA property. That single detail removes a lot of friction for homeowners in World Golf Village, Palencia, Beacon Lake, Nocatee, SilverLeaf, Murabella, TrailMark, and Shearwater.
Related services worth combining
Most questions about irrigation overlap with other services. Weekly lawn maintenance pairs naturally with quarterly mulch and pine straw refresh, semiannual palm tree trimming, and an annual irrigation audit. Sod installations almost always make more sense when combined with a full bed refresh and an irrigation tune-up because a new lawn is only as good as the water delivery behind it. Hardscape projects (paver patios, walkways, retaining walls) usually trigger a landscape design refresh on the surrounding beds because newly finished hardscape highlights every tired planting it sits next to.
We run all nine of our services under one crew with one invoice, which means you are not juggling three contractors who each blame the others when something slips. One call, one accountable team. If you want to bundle we will quote it as a single flat rate — a common bundle for a St. Johns County home is weekly lawn maintenance, quarterly mulch refresh, and palm trim twice a year, which is enough to keep a property at HOA standard year round without any additional scheduling effort from you.
What a free estimate looks like
Every estimate is free, on-site, written, and flat-rated before any work begins. There are no deposits required, no trip fees, and no obligation after the quote lands in your inbox. We walk the property with you (or alone, if you prefer), measure the lawn, count the bed linear feet, identify the grass cultivar, check irrigation coverage, and note any HOA requirements for the property. The written quote typically lands in your email within 48 hours of the visit.
If you move forward, recurring services can usually start within 3–7 days of approval and we lock a fixed day of the week for your property. One-time projects (sod installs, paver patios, landscape design) are scheduled based on current queue — fall (October through February) is our fastest hardscape window because the lawn-maintenance load drops. Call 806-464-2771 or email lawnshark904@gmail.com to schedule an estimate. For snowbird, seasonal, or out-of-state owners we run photo-documented service so you have full visibility into property condition without needing to visit.
The St. Augustine seasonal calendar in plain English
Because our climate runs on a different rhythm than most of the country, it helps to have a simple month-by-month frame for how St. Johns County yards behave. January and February are cool and dormant — St. Augustine grass goes semi-dormant below 55°F and you will see color fade, which is normal, not a problem. This is the right window for hardscape work, tree trimming, bed refresh, and landscape design because the lawn is quiet. March is the wake-up: first mow of the season. A licensed chemical lawn company (not us — fertilizer and pre-emergent are a separate FDACS license) will typically want to apply pre-emergent crabgrass control and the first light fertilization once nighttime temps hold above 65°F. April and May are the strong growth window — weekly mowing, sharp blades, and the first real irrigation tune-up of the year.
June through September is the hard season. Daily afternoon storms, high humidity, and soil temperatures over 85°F create perfect conditions for chinch bugs, gray leaf spot, take-all root rot, and fungal pressure on St. Augustine grass. Mowing frequency stays weekly, sometimes every five days on irrigated lawns. Irrigation should run early morning only — never evening — to avoid leaf wetness overnight. Hurricane season is also live, so homeowners need a plan for pre-storm yard prep and post-storm debris cleanup. October and November are recovery months — a last fertilization of the year is typical before the winterizer cutoff (handled by your licensed applicator, not us), plus gutter and leaf cleanup under live oak canopy, and prepping irrigation for cooler nights. December is quiet maintenance mode.
Common mistakes we see on St. Augustine properties
A handful of mistakes show up on almost every new estimate we walk. Mowing too short is the most common — St. Augustine grass should be cut at 3.5 to 4 inches, never lower. Scalping a Floratam lawn opens the door to weeds, chinch bugs, and fungal disease within one or two mow cycles. Watering every day on a timer is the second most common error — deep, infrequent watering (roughly 3/4 inch twice a week) produces far stronger roots than daily light watering, which trains roots to stay shallow and makes the lawn fragile the first time a timer fails or a storm knocks out power.
Over-fertilizing in summer is the third — a mistake we see on estimate walkthroughs, though the fertilization itself is done by a separately licensed applicator, not by us. Heavy nitrogen applications when soil temperatures are high push fast top growth that chinch bugs and fungal disease love. Applying mulch too thick against tree trunks and plant bases (volcano mulching) is the fourth — two to three inches total is plenty, pulled back from trunks by a few inches. Ignoring irrigation coverage gaps is the fifth — most yards we audit have at least one zone with a head that has drifted, clogged, or been clipped by a mower. A thirty-minute irrigation walk once per quarter catches all of that before a brown patch appears in the wrong place.