Anna sits on Blackland Prairie clay, the same expansive soil famous across Collin County for swelling when it’s saturated and shrinking hard when it dries out, and a yard here behaves accordingly. Grass that looks stressed in a dry August isn’t just thirsty in the usual sense — the soil underneath it is genuinely pulling away from itself, and the same movement that stresses a foundation slab is happening under the lawn and every planting bed on the property. Working with that soil, rather than against it, means timing yard work around both the seasons and the city’s actual watering rules rather than a generic gardening calendar written for a different kind of ground.
Late winter (February)
This is when to get ahead of the season: aerate compacted clay before spring green-up, since gumbo soil compacts harder than sandy or loamy ground and aeration is genuinely more valuable here than in a lot of other Texas towns. It’s also the window to apply pre-emergent herbicide before soil temperatures trigger weed seed germination, and to have any large tree or shrub planting done before the ground starts working against a shovel again.
Spring (March through May)
Anna’s warm-season watering restriction kicks in April 1 and runs through October 31: no sprinkler or irrigation-system watering between 10 a.m. and 6 p.m. on any day. Plan irrigation for early morning or evening accordingly. Hand watering — a watering can, hose with a shutoff nozzle, or drip and soaker hoses — is allowed any time outside that window, which matters most for beds close to the foundation, where even moisture matters more than volume. This is also the best stretch for overseeding thin patches and getting fertilizer down before the heat arrives, since a lawn entering summer already thick and rooted handles the dry stretch far better than one trying to fill in during it.
Summer (June through August)
The real test of the year. Anna sits on open prairie with little tree cover or nearby water to soften the heat, so lawns here take more direct sun and wind than in shadier suburbs, and the clay dries and shrinks hard during any rainless stretch. Deep, infrequent watering beats frequent shallow watering for both the grass and the soil underneath it — shallow watering encourages shallow roots that fail first when a heat wave hits. Keep an eye on foundation beds specifically; consistent, moderate watering along the slab perimeter, using the permitted hand-watering and drip methods outside the 10 a.m. to 6 p.m. window, helps keep the clay from pulling away from the foundation edge as unevenly as it otherwise would.
Fall (September through November)
As temperatures drop, dial back watering frequency to match the lawn’s actual reduced needs, and use the milder weather for any bed renovation, sod repair, or tree planting that summer heat made impractical. Watch the calendar for November 1, when Anna’s watering rules tighten to no more than one irrigation day per week through the end of March — a good prompt to make sure any fall planting is established enough to handle the lighter winter watering schedule.
Winter (December through February)
Cool-season dormancy means the lawn genuinely doesn’t need much water, and the once-a-week limit reflects that. This is the slow season for most yard tasks, but it’s also, ironically, one of the better times to keep an eye on the foundation beds if a dry winter stretch sets in — hand watering outside the restricted window remains available if the clay starts pulling away from the slab even in the cooler months, since foundation movement doesn’t fully take a season off just because the grass does.
For questions on the specifics of the watering ordinance itself, the city’s Code Compliance line is the right call rather than guessing at the rules from memory, since the exact restricted hours and weekly limits are worth confirming directly if you’re ever unsure.
