San Antonio Lawn Maintenance Calendar: Month-by-Month Guide

Maintaining a healthy, resilient lawn in San Antonio requires navigating a unique combination of blistering summer heat, mild winters, alkaline caliche soils, and fluctuating watering regulations. Whether your property features sun-loving Bermuda grass or shade-tolerant St. Augustine under grand live oaks, a structured month-by-month maintenance calendar is the secret to keeping your turf green and vigorous throughout the year. Recover Landscape approaches residential turf care with a practical, consistent strategy tailored directly to South Texas conditions.

Spring Awakening: March through May

Spring is the critical growth revival period across Bexar County. As soil temperatures climb past sixty-five degrees, warm-season grasses begin waking from their winter dormancy. March is the ideal time to apply a pre-emergent herbicide to block stubborn warm-season weeds like sandbur and crabgrass before they germinate.

Mowing heights should be adjusted upward slightly as active growth resumes. For St. Augustine lawns, maintain a height of three to four inches to shade the soil and retain vital moisture. Bermuda grass can be mowed slightly lower, around two to two and a half inches, to encourage dense horizontal spreading.

Fertilization should begin in April after the lawn has achieved full green-up and completed its second mow. When planning your seasonal fertilization and watering schedules, always review current guidelines from San Antonio Water System (SAWS) to align your irrigation practices with local stage watering rules. For complex irrigation repairs or system expansions, property owners should consult a licensed irrigator, as proper head coverage and runtime adjustments prevent water waste during spring warm-ups.

Summer Endurance: June through August

San Antonio summers test the limits of residential landscapes. Extended triple-digit temperatures and intense solar radiation create extreme drought stress. During peak summer months, turf management shifts from active promotion to survival and water conservation.

Mowing routines must adapt to environmental stress. Never scalp your lawn during summer heat; raise mower blades by half an inch to protect grass crowns and reduce soil evaporation. Leaving grass clippings on the lawn during routine mowing creates a natural mulch layer that returns vital nutrients and moisture to caliche-heavy soils.

Irrigation management is paramount during this window. Because municipal water restrictions frequently fluctuate based on Edwards Aquifer levels, property owners must monitor weekly rainfall and adhere strictly to designated watering days. If your system requires adjustments, timer reprogramming, or backflow testing, ensure work is coordinated with certified professionals.

Autumn Recovery: September through November

As daytime temperatures finally dip below ninety degrees, South Texas lawns experience a secondary growth surge. September and October offer the perfect climate for turf recovery following months of heat stress.

Core aeration during early fall helps alleviate soil compaction caused by heavy clay and caliche subsoils, allowing oxygen, water, and nutrients to penetrate deep into the root zone. Applying a balanced, slow-release autumn fertilizer encourages deep root development without triggering tender top growth that could be damaged by early winter frosts.

Leaf drop from San Antonio's iconic live oak trees begins ramping up in late autumn. Raking or mulching fallen leaves promptly is essential, as thick leaf blankets smother turf and invite fungal diseases such as take-all root rot and brown patch during damp autumn evenings.

Winter Dormancy: December through February

Winter in the Texas Hill Country is generally mild, but sudden Arctic fronts can bring hard freezes overnight. Warm-season grasses enter a semi-dormant or fully dormant brown state during these months, requiring minimal active maintenance.

Mowing frequency drops significantly, often shifting to monthly cleanups or equipment maintenance. Keep the lawn clear of debris, yard furniture, and heavy foot traffic while grass is dormant to prevent structural damage. When freezing temperatures threaten, disconnect garden hoses and protect backflow preventers.

Frequently Asked Questions

When should I start fertilizing my San Antonio lawn?

Fertilization should begin in mid-to-late spring after the lawn has fully greened up and been mowed at least twice. Avoid applying heavy nitrogen fertilizers during peak summer heat or late winter dormancy.

How do San Antonio watering restrictions impact my schedule?

Watering schedules must strictly follow current SAWS conservation rules based on your designated watering days and stage restrictions. Always check local guidelines before adjusting irrigation timers.

How can I manage dense caliche soil in my landscape?

Caliche subsoils restrict root depth and water infiltration. Core aeration in the fall, combined with organic topdressing and proper mowing heights, helps improve soil structure over time.

Professional Maintenance Support

Maintaining a vibrant South Texas landscape demands consistent effort across shifting seasonal extremes. When your schedule leaves little time for routine upkeep, professional lawn care ensures your turf receives expert attention from spring green-up through winter dormancy. Explore our dedicated [Lawn Care](/services/lawn-care) services to discover how we can help keep your outdoor spaces healthy year-round.