St. Petersburg has a distinct seasonal lawn care rhythm that differs significantly from most of the country. Here is a practical month-by-month guide for homeowners with St. Augustine lawns in the St. Pete area.
January – February: Winter Dormancy
Mowing: Reduce or pause service. Mow only if growth is visible — raise deck to 4 inches.
Watering: Reduce significantly. Water only every 10–14 days unless grass looks stressed.
Fertilizing: Do not fertilize. Dormant grass cannot use nutrients efficiently.
March – April: Green-Up and Restart
Mowing: Resume regular mowing as grass greens up. Sharpen blades and service equipment.
Fertilizing: Apply a slow-release fertilizer in April once the lawn is actively growing and night temperatures are consistently above 55°F. Use low-phosphorus formulas (Pinellas County limits phosphorus).
Pest watch: Mole cricket activity peaks in spring. Apply preventive grub treatments in March–April if you have had problems before.
May – June: Pre-Rainy Season
Mowing: Weekly mowing is essential. Growth rate accelerates significantly.
Fertilizing: Apply the second application in May — just before the nitrogen blackout period begins June 1.
Chinch bug watch: Start inspecting sunny areas for early chinch bug activity as temperatures rise.
July – September: Rainy Season
Mowing: Peak growth — weekly mowing is non-negotiable. Grass can grow 2–3 inches per week.
Watering: Reduce irrigation heavily. Tampa Bay typically gets 7–9 inches of rain per month. Running irrigation on a fixed schedule wastes water and promotes disease.
Fertilizing: Nitrogen blackout June 1–September 30 in Pinellas County. No nitrogen during this period.
Watch for: Fungal diseases in wet conditions. Sod webworm damage in late summer. Chinch bugs remain active.
October – November: Fall Transition
Mowing: Growth rate slows as temperatures drop. Move toward bi-weekly visits by November.
Fertilizing: Apply a potassium-heavy fertilizer in October (after the blackout ends September 30). Potassium strengthens grass entering winter.
December: Wind-Down
Growth slows significantly. Monthly mowing may be sufficient by late December. Reduce irrigation further. Focus on keeping the lawn tidy rather than fertilizing or treating.
We adjust the schedule to the season automatically.
Amber Lawn Care handles weekly and bi-weekly service in St. Petersburg. We keep you on the right schedule year-round. Request a quote.
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