Wake Forest Lawn Care
Spring Weed Control
10/27/20251 min read
Spring Weed Control Timing Wake Forest NC)
1) Pre-Emergent Herbicides (Prevent weeds before they sprout)
🔹 When: Early spring before weed seeds germinate — typically when soil temperatures reach about 55°F (often mid-February to early March in this region).
🔹 Targets: Summer annual weeds like crabgrass, goosegrass, and foxtail.
🔹 How:
Apply granular or liquid pre-emergent evenly across the lawn.
Water lightly (or wait for rain) to activate the herbicide barrier.
Follow label instructions — don’t use pre-emergent where you plan to overseed soon, as it can prevent grass seed from sprouting.
👉 NC Cooperative Extension calendars typically recommend getting pre-emergents down by early March for best effect before warm-season weeds emerge.
2) Post-Emergent Herbicides (Kill existing weeds already growing)
🔹 When: Mid- to late-spring after weeds are visible and actively growing — about March through May depending on weather.
🔹 Use: Selective herbicides that target broadleaf weeds (like dandelions, clover) or grassy weeds without harming your turfgrass.
🔹 Tips:
Apply on calm, mild days with no rain expected for 24–48 hours.
Spot-treat dense patches instead of blanket spraying.
🌾 Best Practices for Weed Control
✔ Know your grass type
Warm-season lawns (Bermuda, Zoysia): Pre-emergent and fertilization after green-up.
Cool-season lawns (Tall Fescue): Regular mowing and selective herbicides in spring.
Knowing turf type helps choose correct herbicides and avoid injury.
✔ Mow properly
Maintain recommended mowing height (usually 2–3″ for most lawns).
Taller, healthy grass shades soil, reducing weed seed germination.
✔ Hand-pull or hoe small weeds early
Especially in beds and hard-to-spray areas — pulling weeds before they flower and seed reduces future problems.
✔ Mulch landscape beds
Mulch 2–3″ deep around plants to suppress weed emergence and conserve moisture.
✔ Water correctly
Water only as needed (1–1.5″ per week total rainfall/irrigation is a good target once grass is actively growing).
🛠 Safety & Product Tips
Always read and follow the label instructions on any herbicide.
Choose herbicides labeled for your turfgrass and weed type.
Avoid applying herbicides right before rain — it can wash product away before it activates.