Overseeding tall fescue in fall, step by step
Fall is the best time of the year to thicken a cool-season lawn. Here’s the order to do it in so the seed actually takes.
For fescue and bluegrass lawns, fall seeding beats spring every time: warm soil speeds germination, cooler air is easier on seedlings, and there’s a whole season to root before summer.
Timing
Late August to mid-October, when soil is roughly 50–65°F and daytime highs are mostly below 80°F.
The steps
- Mow down to about 2 inches and bag the clippings.
- Core aerate, two passes if the soil is compacted.
- Spread seed — about 6–8 lb of tall fescue per 1,000 sq ft for overseeding.
- Apply a starter fertilizer the same day.
- Water lightly 1–3 times a day to keep the top half-inch moist for 2–3 weeks.
- First mow when the new grass reaches about 4 inches, at 3.5 inches.
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Keep reading
Is it grubs? The 30-second test.
Brown patches that peel up like carpet, or animals tearing up the yard overnight. One quick test tells you whether grubs are the problem.
When to put down pre-emergent (hint: not by the calendar)
Soil temperature is the trigger, not the date. Here’s the number to watch and the easy backup cue if you don’t own a thermometer.
How to read a fertilizer bag (and how much your yard needs)
Those three numbers are percentages. Once you know that, working out how many pounds your yard needs takes one line of math.
