Skip to content
GreenUpGuide

Topic

Seasonal timing

When to seed, feed, aerate and treat. Every answer here changes by growing zone, so every guide says which zone it is for.

Lawn timing is not a calendar, it is a soil temperature. Pre-emergent goes down when soil holds about 55°F for days, not on a March date; fall feeding starts while the grass is still green, not after the first frost; aeration belongs in the peak root-growth window for your grass family. Miss the window and the work does nothing except cost money.

That is why every timing guide here says which zone it is written for before it says what to do. Start with the first-mow and watering guides for the season you are in, then the specific windows: grub control, overseeding, winterizer and the last mow before winter.

Timing guides14 live

Cool

Is Winterizer Fertilizer Worth It in Your Zone?

On cool-season grass it is the most valuable feeding of the year. On warm-season grass it causes winter kill. Same bag, opposite outcomes, and the zone decides.

·3 min read

How Long After Overseeding Can You Mow?

Wait until the new grass is a third taller than your cutting height, usually two to four weeks. Mowing sooner pulls unrooted seedlings straight out of the soil.

·4 min read

The First Mow of Spring: When, and How Low

Mow when the grass is a third taller than your target height and the ground is firm. Go slightly low once to clear winter debris, then raise the deck for the year.

·3 min read

Cool

When to Stop Mowing Before Winter

Keep mowing while the grass grows, usually until soil drops below 50°F. Stopping in October because the calendar says autumn leaves the lawn too long for winter.

·4 min read

Cool

When to Aerate a Cool-Season Lawn

Early autumn, August into September, while the grass grows hard enough to heal. Spring aeration works but cancels your crabgrass control for the year.

·3 min read

Warm

When to Fertilize a Warm-Season Lawn in Spring

Wait until the lawn is about half green and the last frost has passed, usually mid-April to May. Feeding dormant bermuda grows weeds and risks frost damage.

·3 min read

How Often Should You Water New Grass Seed?

Two to three light waterings a day until germination, then fewer and deeper. The target is a damp top half-inch that never dries out and never turns to soup.

·4 min read

When to Apply Pre-Emergent, by Growing Zone

Crabgrass germinates when soil hits 55°F for three days running. Apply just before that. Here is when it happens in each zone and the mistake that wastes the bag.

·4 min read

Cool

When to Overseed a Fescue Lawn in the North

Late August to mid-September is the window. Here is the soil temperature that opens it, the frost date that closes it, and why spring seeding is the weaker option.

·4 min read