Winter Lawn Care in St. Augustine, FL

Understanding Floratam semi-dormancy in zone 9a

St. Augustine, FL sits squarely in USDA hardiness zone 9a, which means winters are mild by national standards but still cold enough to slow—and occasionally stress—warm-season turf. Floratam, the most common St. Augustine grass cultivar in St. Johns County, is a warm-season variety that does not go fully dormant the way bermudagrass does in colder climates. Instead, it enters a period of semi-dormancy when nighttime temperatures consistently drop below 55°F and daytime highs stay in the 50s and 60s.

During semi-dormancy, Floratam's root system remains alive and active at the soil level, but top growth slows dramatically or stops. Leaf blades may develop a slightly grayish or muted green tint rather than the vivid blue-green color you see in summer. This is normal. Some homeowners panic and reach for fertilizer or extra irrigation when they see color change—both of which are exactly the wrong response and can cause lasting damage to the lawn's health heading into spring.

Zone 9a winters in the St. Augustine area average lows in the mid-30s to mid-40s°F through December and January, with occasional dips below freezing—especially inland in St. Johns County neighborhoods like World Golf Village, Murabella, and Silverleaf where radiational cooling on clear nights is more pronounced than on the coast. Coastal areas like Crescent Beach, Vilano Beach, and Anastasia Island benefit from moderating ocean influence and see fewer hard freezes, but frost events can still occur. UF/IFAS extension research consistently shows Floratam is more cold-sensitive than some other St. Augustine cultivars, so managing it conservatively in winter pays dividends when March arrives.

The practical takeaway: scale everything back. Winter is not a threat to a healthy Floratam lawn if you resist the urge to overwater, overfeed, or over-mow. The grass knows what to do—your job is to stay out of its way and protect it from the handful of things that can genuinely set it back.

Winter mowing: when to mow and when to skip

One of the most common winter mistakes in St. Johns County is maintaining a rigid weekly mowing schedule regardless of whether the grass is actually growing. In December through February, Floratam may only need mowing every two to three weeks—or not at all during cold stretches when growth has essentially paused. Mowing turf that is not growing accomplishes nothing except stressing the plant and potentially nicking crowns that are already under thermal stress.

The right standard for winter mowing is simple: mow when the grass has visibly grown enough to warrant it, not on a fixed calendar. In mild years when temperatures stay in the 60s during the day, some growth continues and bi-weekly mowing may be appropriate. After a cold snap that drops temperatures below 40°F for several nights in a row, growth often stops entirely for two to three weeks—and that is exactly when you should skip the mow entirely.

When you do mow in winter, keep these guidelines in mind:

• Mow height: keep Floratam at 3.5 to 4 inches through winter—never scalp or cut below 3 inches. Taller canopy insulates the crown from temperature swings.
• Mow dry: always mow when turf is dry, both to avoid compaction and because wet blades tear rather than cut cleanly.
• Skip after frost: if frost is forecast within 48 hours or the turf is still showing frost damage from a recent event, wait until blades have fully recovered before mowing.
• Blade sharpness: a sharp blade is more important in winter because slow-growing, stressed turf is slower to callus over ragged cuts.

For properties in communities like Palencia, Nocatee, or World Golf Village where HOA standards still expect a reasonably tidy appearance even in winter, bi-weekly service during mild weather keeps the lawn looking maintained without over-cutting. If you have a winter lawn maintenance agreement with a professional crew, confirm upfront that they are mow-as-needed in winter rather than on a rigid weekly schedule—that one policy change can make a measurable difference in how your turf emerges in spring.

Frost and frozen turf: staying off the grass

This rule is short and non-negotiable: do not walk on, mow, or run equipment across Floratam when it is frozen or when frost is visible on the blades. When temperatures drop below 32°F, water inside grass cells freezes. The cell walls become rigid and brittle. Any mechanical pressure—a footstep, a mower tire, a dog running across the yard—ruptures those frozen cells. The result is permanent brown tracks that are visible for weeks, and in severe cases, the damage kills the affected turf all the way to the crown, creating dead patches that require sod repair.

In practice, this means waiting until the frost has melted and the turf is fully thawed before any foot traffic or mowing. In St. Augustine's zone 9a climate, that typically means waiting until mid-morning on frost days—usually 9:00 to 10:00 a.m. after a clear, cold night. If you have an irrigation system on an early-morning schedule, a brief run after a hard frost is sometimes used by experienced growers to protect tender ornamentals, but for established Floratam turf, the better approach is simply to wait it out and avoid the yard entirely until the frost lifts.

Brown-patch fungal disease, a common winter issue for St. Augustine grass across North Florida, can be confused with frost damage. Brown patch (caused by Rhizoctonia solani) tends to appear as roughly circular irregular patches with a darker brown smoke ring at the perimeter, typically appearing when nighttime temperatures are between 50°F and 70°F with high humidity. Frost damage, by contrast, tends to track exactly where foot traffic or equipment contact occurred. Knowing the difference helps you respond appropriately—brown patch is a fungal management issue, while frost damage is a recovery-and-patience issue. If you see unexplained circular browning, contact a licensed lawn care professional to confirm before taking any action.

After a significant freeze event (several nights below 28°F), some superficial browning of Floratam blades is normal and does not mean the turf is dead. The crowns and roots at soil level typically survive zone 9a winters intact. Resist scalping or cutting off the brown blades immediately—that top growth provides thermal insulation for the crown below. Leave it in place until you see clear evidence of new growth emerging from the base in late February or March.

Irrigation cutback: one to two runs per month

Water conservation in winter is both an environmental responsibility and a turf health practice. The St. Johns River Water Management District (SJRWMD) promotes reduced irrigation schedules during cooler months, when evapotranspiration rates drop significantly and turf simply does not need or use water at the same pace as during summer. For Floratam in semi-dormancy, over-irrigation in winter is actively harmful: it keeps the soil too wet, encourages fungal conditions (including brown patch), and can push tender new growth that is immediately vulnerable to frost.

The target for most zone 9a lawns in St. Johns County during December through February is one to two deep watering runs per month—not per week. A single deep run that applies about half an inch to three-quarters of an inch of water is generally sufficient to keep the root zone from completely drying out during the mild, low-evaporation winter weeks. Sandy coastal soils do drain relatively quickly, so you will need some irrigation in dry stretches, but the threshold is much higher than most homeowners' summer habits suggest.

Practical steps for winter irrigation management:

• Adjust your controller: either switch to a manual or rain-delay mode and run cycles intentionally, or reduce your automatic schedule to twice monthly—not twice weekly.
• Check soil moisture before running: push a screwdriver six inches into the soil. If it penetrates easily and the soil feels slightly cool-moist at depth, you can hold off.
• Inspect heads before winter: a broken or misdirected head wastes water on pavement and can create soft wet spots that promote disease—catch these in November before you switch to a minimal schedule.
• Disable rain sensors temporarily if you rely on manual monthly runs: or ensure your smart controller is calibrated for winter ET rates.

If your yard serves snowbird owners who will be absent from January through March, program the system for minimum monthly deep runs and ask a trusted service contact—or arrange a property check visit—to confirm the irrigation system is functioning correctly at least once during the absence. An undetected broken head running twice a week through February creates a serious fungal and water-waste problem.

Live-oak leaf drop cleanup

One of the most distinctive—and sometimes frustrating—winter landscape realities in St. Augustine is the behavior of live oak (Quercus virginiana). Unlike deciduous trees in northern climates that drop leaves in autumn, Florida live oaks are technically evergreen but cycle their foliage in late winter: the old leaves drop heavily in February and March just as new growth is emerging. In practice, this means that when the rest of the country is finishing up with fall leaves, St. Johns County yards are dealing with their biggest leaf drop of the year.

This matters for lawn health because a heavy mat of live-oak leaves sitting on semi-dormant Floratam blocks light, holds moisture at the turf surface, and creates prime conditions for fungal disease. Leaves that sit wet for extended periods can also begin to break down and form a mat that smothers turf crowns in affected patches. In neighborhoods with mature live oak canopy—including much of historic St. Augustine, Trailmark, and Shearwater—leaf drop in February and early March can be substantial enough to completely cover lawn panels within a few days.

Best practices for managing live-oak leaf drop:

• Stay ahead of accumulation: do not wait for a full mat to form. A light weekly blow or rake in February is far easier than clearing a heavy wet layer every three weeks.
• Blow or rake, do not mulch-mow heavy deposits: mowing heavy leaf loads over semi-dormant Floratam leaves shredded debris in the crown, which can promote disease.
• Bag or pile for removal: live-oak leaves are tough and slow to decompose—they are not ideal as in-place lawn mulch in large quantities, but they can be added to a compost pile or hauled off.
• Check beds too: leaves that blow into planting beds can mat around the base of shrubs and ornamentals; a quick cleanup every two weeks keeps beds open and reduces pest harborage.

If leaf volume on your property becomes unmanageable mid-winter, a scheduled yard and storm cleanup visit can clear accumulated debris efficiently without the risk of over-mowing the turf or leaving matted layers behind.

Mulch top-off, bed care, and pruning dos and don'ts

The quieter pace of winter lawn care in St. Johns County makes December through early February an ideal window for bed work. While the turf is resting, your planting beds benefit from fresh mulch, light cleanup, and strategic pruning—with the key word being strategic. Not everything should be pruned in winter, and the distinctions matter.

Mulch top-off: a two-to-three-inch layer of fresh mulch or pine straw in planting beds serves multiple purposes in winter. It moderates soil temperature around root zones of cold-sensitive ornamentals, retains soil moisture during dry spells, and suppresses winter weed germination. If your beds were thinned by summer rain and decomposition, January is an excellent time to refresh. Keep mulch pulled back a few inches from shrub stems and tree trunks to prevent crown rot. Pine straw is particularly popular in St. Augustine neighborhoods for its natural look and ease of application.

Pruning dos:

• Dead, damaged, or crossing branches: these can be removed any time of year; winter is a good time because reduced foliage makes structure easier to assess.
• Overgrown shrubs (non-spring-bloomers): plants like Indian hawthorn, viburnum, and Walter's viburnum can be lightly shaped in January without sacrificing bloom, since they set flower buds in spring.
• Ornamental grasses: cut back fountain grass and similar varieties in late January or early February before new growth emerges.
• Palm boots and dead fronds: removing old palm boots and dead fronds in winter is fine and tidies the appearance considerably.

Pruning don'ts:

• Azaleas: do not prune azaleas after October—they set buds for spring bloom in late summer and fall. Pruning in January eliminates the flower show.
• Bougainvillea and other tropicals: major pruning of frost-sensitive plants in winter can expose fresh tissue right before a cold event. Wait until after last expected frost (typically mid-March in St. Johns County) for heavy pruning.
• Crape myrtles: the practice known as crape murder—cutting trunks back to stubs—is not recommended by UF/IFAS at any time of year. Light selective shaping to remove crossing or inward-growing branches is acceptable in late winter.

After pruning, refresh the mulch layer around the base of worked plants to protect root zones and give the beds a clean, finished appearance that satisfies HOA expectations through the winter months.

Protecting tropical ornamentals with frost cloth

Even in zone 9a, hard freezes occur. In recent winters, St. Johns County has seen overnight lows drop to the upper 20s, which is cold enough to kill unprotected tropical ornamentals—especially plants like bougainvillea, ixora, plumbago, Mexican petunia (Ruellia), and tender palms like the Christmas palm or bismarckia. Established cold-hardy palms like Sabal palmettos tolerate these temperatures without protection, but tropical accent plants that give St. Augustine-area yards their lush look are vulnerable.

Frost cloth—sold as floating row cover or frost blanket—is the most effective way to protect smaller ornamentals during a hard freeze event. It traps ground heat under the fabric and keeps leaf surfaces a few degrees warmer than the open air. For it to work properly, the cloth must reach all the way to the ground so heat is trapped inside the space around the plant, not just draped loosely over the top. Weigh or pin edges down so the cloth does not blow off in overnight wind.

Key tips for effective frost protection:

• Cover before sunset: ground heat accumulates during the day—covering at dusk traps that warmth effectively. Covering at midnight after it is already cold is far less effective.
• Use appropriate cloth weight: light floating row cover (0.5–1.0 oz per sq yd) works for light frost; heavier cloth (1.5–2.0 oz) is better for hard freezes in the upper 20s.
• Do not use plastic: plastic sheeting holds no thermal mass and can concentrate cold radiation at leaf surfaces that press against it, causing freeze burn at contact points.
• Remove covers promptly in the morning: as soon as temperatures rise above freezing and the frost lifts, remove the cloth so plants get light and air. Leaving covers in place on a warm sunny morning can overheat sensitive foliage.
• Water before a freeze: moist soil holds and releases more heat than dry soil. A light irrigation run the afternoon before an expected freeze can help buffer root zone temperature.

For larger tropicals that cannot be covered easily, a trunk wrap of burlap or foam pipe insulation around the base protects the root crown—the most critical area for plant survival. If the above-ground portion of a plant is damaged by frost, many tropicals will re-sprout from the crown once temperatures normalize. Do not dig up or discard a frost-damaged tropical until you have given it four to six weeks to show new growth in spring.

Why you must skip fertilizer all winter

The rule here is clear: do not apply fertilizer to Floratam St. Augustine grass from November through mid-March. This applies to slow-release granular products, liquid feeds, iron supplements intended to green up dormant turf, and any other soil amendment designed to push growth. The reasons are both agronomic and practical.

First, semi-dormant Floratam cannot efficiently take up nutrients. Roots are active but working at reduced capacity, and the biochemical processes that allow nutrient uptake slow dramatically below 65°F soil temperature. Nitrogen applied to cold soil either sits unused and leaches into groundwater—a problem specifically flagged by SJRWMD and Florida's fertilizer ordinances—or it stimulates a small flush of soft, succulent new growth that is immediately vulnerable to frost burn. Frost-burned new growth is not just cosmetically ugly—it can set back your spring green-up timeline by several weeks because the plant must redirect energy to recovery rather than expansion.

Second, St. Johns County's fertilizer blackout ordinance restricts nitrogen and phosphorus applications during the rainy season and around sensitive water bodies, and municipalities throughout the county encourage responsible off-season restraint to protect the SJRWMD water supply and coastal estuaries. Responsible winter lawn care means not feeding when the grass cannot use the input.

For homeowners who want to address color during winter, the most you should do is verify that your soil pH is in the correct range (6.0–7.0 for St. Augustine grass) and that your irrigation schedule is adequate—both of which can affect apparent turf color without requiring any fertilizer input. If the lawn looks noticeably pale or off-color through the winter and recovers slowly in spring, that is a conversation to have with a licensed lawn care professional in March, not a reason to apply fertilizer in January.

Plan your first fertilizer application—through a licensed applicator if you are going that route—for when nighttime temperatures are consistently above 55°F and the turf has resumed visible active growth, typically April in St. Johns County. That timing gives fertilizer the best possible uptake efficiency and the lowest environmental loss.

Snowbird and HOA considerations in winter

A significant portion of St. Augustine-area homeowners—particularly in gated communities like World Golf Village, Palencia, Nocatee, and Beacon Lake—are part-time or seasonal residents who leave for extended periods between December and March. While the reduced lawn growth of winter makes absence more manageable, it does not eliminate the need for property attention. Several specific risks require a plan before you leave.

Storm damage and debris: winter in North Florida is not hurricane season, but cold fronts, wind events, and occasional severe thunderstorm lines can drop branches, scatter debris, and damage ornamentals. A yard that sits unvisited for six weeks after a wind event can accumulate enough damage to generate HOA notices or become a liability concern. Arrange for a trusted neighbor, property manager, or a landscaping service to do a visual check after any significant weather event.

HOA tidiness standards: many St. Johns County HOAs do not suspend their appearance standards in winter. Lawns in World Golf Village, Palencia, and Nocatee are expected to maintain a reasonably tidy appearance year-round—even if the grass is growing slowly. That means leaf litter should be managed, beds should not become overgrown, and turf should not be allowed to become a shaggy mat. A bi-weekly or monthly property check that includes a light cleanup, leaf blowing, and edge touch-up is usually sufficient to stay in compliance through the slow-growth months.

Pest and irrigation monitoring: a broken irrigation head or a stuck valve can run undetected for weeks when no one is home, resulting in a water bill surprise and potential turf or bed damage. If you are leaving for an extended period, consider turning the irrigation controller to manual or minimum-run mode, and ask your property-check contact to visually confirm the system is off and the turf looks normal on each visit.

Brown patch watch: brown patch fungal activity is most common when nighttime temperatures are in the 50–70°F range with extended periods of high humidity—conditions that can occur in November, December, and again in late February in St. Augustine. If your property is unmonitored during this window and a brown patch outbreak goes unaddressed, circular patches can expand significantly before you return. A quick photo of the turf by your property-check contact can flag this early.

For snowbird homeowners in the St. Augustine area, scheduling periodic winter lawn maintenance visits provides peace of mind and a defensible record of upkeep should any HOA compliance question arise. The team at Lawnshark Landscaping serves clients across St. Johns County—including Crescent Beach, Anastasia Island, and Vilano Beach—and can coordinate winter property checks with routine maintenance. Call 806-464-2771 (Mon–Sat, 7am–6pm) to discuss a winter schedule that fits your needs while you are away.

Prepping for spring green-up

The best spring lawn in St. Johns County starts with the right winter habits. If you have followed the advice throughout this guide—mowing conservatively, cutting irrigation back, skipping fertilizer, keeping leaves clear, and protecting vulnerable ornamentals—your Floratam should enter spring in solid health with a root system that is ready to respond quickly when warmth returns.

The transition out of semi-dormancy typically begins in late February and accelerates through March. Signs to watch for: new lateral runners (stolons) extending out from established clumps, a brightening of the blade color from muted gray-green back toward vivid blue-green, and a visible increase in growth rate that makes mowing frequency feel necessary again. Once you see consistent new growth and nighttime temperatures are holding above 55°F, you can begin returning to a regular maintenance schedule.

Late winter bed work to complete before spring flush:

• Edge all beds cleanly: fresh edging in late February separates turf from beds clearly and gives the landscape a finished look as everything starts greening up.
• Refresh mulch if not done in January: a clean two-to-three-inch layer before the spring growing season suppresses summer weeds and moderates soil temperature during warm-up.
• Assess any turf bare spots: if frost events or other winter stress left dead patches, late March to April is the right time to fill them with sod—not in winter when new sod cannot root.
• Service irrigation before April: adjust heads, check coverage patterns, replace broken sprinkler heads, and confirm your controller is ready for the transition to a full summer schedule.
• Clean up live-oak leaf drop: February's leaf drop from live oaks is the year's biggest cleanup—complete it fully before you resume regular mowing so you are not grinding leaves into the recovering turf.

For homeowners in Crescent Beach and the surrounding barrier-island communities, spring green-up timing can be slightly earlier than inland zones thanks to the moderating effect of the Atlantic. The lawn care in Crescent Beach window for the first post-winter fertilizer application is often a week or two ahead of World Golf Village or Murabella—another reason to pay attention to your specific microclimate rather than following a rigid county-wide date. When your turf tells you it is growing again, that is your green light for spring.

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 seasonal 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.