Lawn Care Aiken SC Calendar
Month-by-Month Guide for Zone 8a

January — Rest & Plan

• Lawn fully dormant — brown is completely normal
• Schedule spring program with your lawn care provider
• Soil pH correction — lime if needed, won't stress dormant grass
• Watch for early warm spells that prompt premature green-up

February — Pre-Emergent Window Opens

• Monitor soil temperature — must apply pre-emergent before 55°F
• Watch for forsythia blooming — nature's 55°F soil temperature signal
• Late February: apply pre-emergent if warm spell pushes temps up early
• Send soil sample to Clemson Extension while lawn is dormant

Pre-emergent timing: Aiken's sandy loam soils hit 50–55°F in late February to mid-March — typically 2 weeks earlier than the Augusta GA metro that shares our CSRA climate zone.

March — Pre-Emergent Application

• Apply pre-emergent (prodiamine) before soil hits 55°F
• Do NOT apply weed-and-feed on Centipede during green-up
• Centipede begins greening late March — do not fertilize yet
• First fire ant mound activity of the season — prepare

April — Green-Up & First Fertilizer

• Begin mowing as Bermuda and Zoysia fully green up (mid-April)
• First fertilizer after 100% green-up — Bermuda: 1 lb N/1,000 sqft
• Fire ant mounds surge after warm rains — schedule whole-yard treatment
• Watch for slime mold after heavy rains — ugly but harmless

Soil temperature reaches 65°F in late April to early May in Aiken (Zone 8a) — this is the trigger for fertilization of all warm-season grasses.

May — Peak Growth Begins

• Increase mowing frequency — Bermuda every 5–7 days
• Centipede ONLY fertilizer application: 15-0-15 at 1 lb N/1,000 sqft
• Mosquito control barrier treatment — season is underway
• Watch for armyworm activity — birds gathering in lawn are first sign

June — Peak Season & Pest Pressure

• Bermuda grows 1"+/week — mow every 5–7 days, follow one-third rule
• Peak mosquito season — monthly barrier spray
• Second Bermuda fertilizer (1 lb N/1,000 sqft)
• Brown patch fungus risk — avoid late-evening irrigation

July — Manage, Don't Stress

• 91°F avg high in Aiken — water 1 inch/week if no rain
• Continue mowing frequency — slowing down causes scalping
• Armyworm peak — check every few days for irregular brown patches
• Grubs beginning root feeding — spongy turf that pulls up easily

August — Last Push Before Fall

• Continue mowing — don't let grass get ahead before fall
• Grub damage most visible — brown patches that peel like carpet. Treat immediately.
• Last effective Bermuda fertilizer before September 15 cutoff
• Nutsedge thrives in heat and humidity — treat with sedge-specific herbicide

September — Core Aeration Window

• BEST window for core aeration — grass still growing, recovers before dormancy
• Apply fall pre-emergent early-to-mid October for winter annual weeds
• Continue mosquito program through October
• Overseed thin Bermuda or Zoysia areas while soil is still warm

September 1 is the hard stop for nitrogen on Bermuda in Aiken — after this date, any nitrogen produces tender growth that winter-kills. Centipede and Zoysia get no additional nitrogen regardless; their single and dual applications are complete for the year.

October — Fall Pre-Emergent & Winterizer

• Apply fall pre-emergent (early October) for poa annua, henbit, chickweed
• Winterizer fertilizer — potassium-focused for root strength
• Reduce mowing frequency as growth slows dramatically
• Fire ants have a second activity surge in October — check for mounds

November — Into Dormancy

• Bermuda, Zoysia, Centipede begin going brown as temps drop below 50°F
• Final leaf cleanup before full dormancy
• Equipment maintenance — sharpen mower blades for spring

December — Rest

• Lawn fully dormant — brown is completely normal, grass is not dead
• Plan next year's lawn program
• Soil testing if you haven't done one this year