How long should I wait after applying herbicides before reseeding my lawn?
Timing is everything when it comes to herbicide application and reseeding!
The waiting period depends on the type of herbicide you used:
Pre-emergent herbicides: Wait 8-16 weeks before seeding. These create a barrier that prevents ALL seeds from germinating – including your new grass seed!
Post-emergent herbicides: Generally 2-4 weeks is sufficient, but this varies by product. Some selective herbicides allow reseeding sooner, while non-selective ones may require longer waits.
Pro tips for success:
- Check your herbicide label for specific reseeding intervals
- Consider the active ingredient – some break down faster than others
- Weather affects breakdown time (heat and moisture speed it up)
- Test a small area first if you’re unsure
Best practice:
Plan ahead! Apply pre-emergent herbicides in early spring, then seed in fall when they’ve worn off. This gives you weed control AND successful seeding.
If you’re unsure about your specific product, contact the manufacturer or your local extension office for guidance.
Safety Reminder:
Always read and follow the herbicide label directions completely – they contain crucial timing and safety information specific to that product!
For more info, see https://24d.org or https://24d.info!
