Fertilizer Schedule by Grass Type and Season
Quick Answer
Warm-season grasses (Bermuda, Zoysia, St. Augustine) should be fed through late spring and summer, tapering off 6-8 weeks before first frost. Cool-season grasses (Bluegrass, Fescue) should get their heaviest feeding in early fall, with a lighter application in spring.
Warm-Season Grass Schedule
- Late spring: first feeding once the lawn shows full, active green-up
- Early-mid summer: second feeding, 4-6 weeks after the first
- Late summer: optional third feeding if growth or color is lagging
- Fall: avoid nitrogen within 6-8 weeks of first frost; a low-nitrogen, high-potassium winterizer is optional here instead
Cool-Season Grass Schedule
- Early spring: light feeding, avoid overdoing nitrogen before summer heat
- Early fall: the heaviest feeding of the year — roots are actively growing and this sets up spring green-up
- Late fall: optional light feeding before dormancy, focused on root/cold hardiness rather than top growth
Not sure which schedule applies to you?
Check our grass type identification guide first — warm- and cool-season schedules genuinely conflict, so confirming your grass type is the first step.
Why the Schedules Are Different
Warm-season grasses are actively growing in summer heat and dormant in winter — feeding them aligns with when they can actually use the nutrients. Cool-season grasses do most of their root growth in the cooler months of fall, which is why that's the highest-value feeding window for them, even though it feels counterintuitive to fertilize as temperatures drop.
Frequently Asked Questions
Most lawns do well with 3-5 applications per year, timed to the grass type's active growing season — more isn't always better and can cause thatch buildup or runoff.