Complete Guide to Lawn Care in Jacksonville, FL (2026)

Understanding Jacksonville's Climate and What It Means for Your Lawn

Jacksonville sits squarely in a humid subtropical climate zone — hot, wet summers and mild winters that rarely dip below freezing. Average summer temperatures hover between 90–95°F with high humidity, and the area receives roughly 52 inches of rainfall per year, most of it concentrated between June and September. This climate is both a gift and a challenge for lawn care. Grass grows fast (meaning more mowing), but so do weeds, fungal diseases, and pests like chinch bugs.

Understanding your microclimate matters too. Homes in Riverside and Avondale deal with older, compacted clay-heavy soils, while newer developments in Nocatee and eTown are built on sandy fill. Sandy soils drain fast, meaning your lawn dries out quickly after rain but also leaches nutrients faster — you'll fertilize more frequently. Clay soils hold moisture and nutrients longer but can suffocate roots if overwatered.

Best Grass Types for Jacksonville Lawns

Not all grasses perform equally in NE Florida. Here's what you'll actually see in Jacksonville yards:

• St. Augustine: The most common lawn grass in Jacksonville by a wide margin. It's a thick, blue-green turf that tolerates shade (the only warm-season grass that does), spreads by stolons, and handles the humidity well. The main downside is chinch bug vulnerability — infestations can kill large patches in a few weeks during summer. Floratam is the most common variety here.
• Zoysia: Growing in popularity for full-sun yards. Zoysia is dense, slow-growing (a plus for mowing frequency), handles drought well, and chokes out weeds once established. It goes dormant and turns brown in winter, which some homeowners dislike. Empire and Emerald are popular NE Florida varieties.
• Bermuda: Used mostly in athletic fields, golf courses, and full-sun commercial properties. Very aggressive spreader, requires full sun, and needs more frequent mowing to look good. Not great near garden beds — it will invade them.
• Bahia: The low-maintenance option. Tough, drought-tolerant, and cheap, but not as attractive as St. Augustine or Zoysia. You'll see it on roadsides and rural properties. Good for large lots where aesthetics aren't the top priority.

Mowing Schedule by Season

Jacksonville's long growing season means your mowing schedule shifts significantly throughout the year. Following the right frequency keeps your lawn healthy and prevents scalping.

• Spring (March–May): Mow weekly as grass breaks dormancy and growth accelerates. Set your mower height to 3.5–4 inches for St. Augustine — never cut more than one-third of the blade at once.
• Summer (June–September): Weekly mowing is essential. In peak heat, some fast-growing St. Augustine lawns need mowing every 5–6 days. Keep blades sharp — dull mowers tear grass, increasing disease susceptibility.
• Fall (October–November): Slow to every 10–14 days as growth slows. This is also a good time to raise your mowing height slightly to protect grass going into cooler months.
• Winter (December–February): Mow only as needed, typically every 3–4 weeks or when the lawn looks ragged. Zoysia goes fully dormant; St. Augustine may stay green in mild winters.

Watering Guidelines and St. Johns Water Management District Rules

The St. Johns River Water Management District (SJRWMD) enforces year-round watering restrictions across most of Northeast Florida. Violating these rules can result in fines, so knowing them is essential.

Current restrictions limit landscape irrigation to two days per week for most addresses. Odd-numbered addresses water on Wednesday and Saturday; even-numbered addresses water on Thursday and Sunday. Irrigation is prohibited between 10 a.m. and 4 p.m. to reduce evaporation. New sod and seeding have a 30-day exemption for establishment — but you must notify your water utility.

Best practice: Water deeply and infrequently. St. Augustine needs about 3/4 inch of water per application. A healthy lawn with good soil should only need irrigation when it shows stress signs — blue-gray color, footprints that don't spring back, or wilting in the early morning.

Fertilization Calendar for NE Florida

Florida law limits when and how much nitrogen you can apply to help protect the St. Johns River watershed. Under the Florida-Friendly Landscaping ordinances adopted by most NE Florida counties, fertilization with nitrogen is prohibited from June 1 through September 30 in many jurisdictions (check your county — Duval, St. Johns, and Nassau all have specific rules).

• March–April: Apply a slow-release nitrogen fertilizer once grass shows green growth. Use a product with at least 50% slow-release nitrogen.
• May: Second application if needed. Use a balanced fertilizer (6-0-0 or similar) for St. Augustine.
• October: Post-restriction application to strengthen roots before cooler weather. Potassium-focused fertilizers help harden the grass.

Always water in fertilizer after application and never fertilize before a heavy rain — you'll just wash nutrients into storm drains.

Weed Control: The Florida Weeds You'll Actually Deal With

NE Florida has its share of persistent weeds. The most common culprits are:

• Dollarweed (Pennywort): Round, shiny leaves that look like tiny lily pads. Thrives in wet, overwatered lawns. Best fix is reducing irrigation and improving drainage. Atrazine-based herbicides control it in St. Augustine.
• Crabgrass: Annual grass weed that germinates in spring. Pre-emergent herbicide applied in late February or early March (when soil temps reach 55°F) is your best defense.
• Nutsedge: Often mistaken for grass, nutsedge grows faster than your lawn and stands taller after mowing. It's a sedge, not a grass — standard herbicides don't work. Use products containing halosulfuron or sulfentrazone.
• Florida Pusley: Sprawling summer annual with small white flowers. Spot treat with broadleaf herbicides in spring and early summer before it sets seed.

For help keeping your lawn on a healthy maintenance schedule, connect with a local pro through YardLink's lawn maintenance directory or browse pros serving Jacksonville.

Getting the Most Out of Your Jacksonville Lawn

The biggest mistakes Jacksonville homeowners make are overwatering (which drives dollarweed and disease), cutting grass too short (scalping), and fertilizing at the wrong time. Follow the seasonal calendar above, stay within SJRWMD watering rules, and address pest and weed problems early before they spread. If you're unsure what your lawn needs, many local pros offer free assessments — find a trusted NE Florida lawn care pro on YardLink to get started.