Aeration Timing Calculator

Find the perfect time to aerate your lawn based on your location, grass type, and local climate conditions. Get personalized recommendations for optimal aeration timing.

Aeration Timing Calculator
Find the perfect time to aerate your lawn based on your location and grass type

We use your ZIP code to determine local climate and frost dates

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Frequently Asked Questions
Common questions about lawn aeration timing and techniques

When is the best time to aerate my lawn?

The best time depends on your grass type and climate. Cool-season grasses (like Kentucky Bluegrass) prefer fall aeration, while warm-season grasses (like Bermudagrass) should only be aerated in spring. Our calculator considers your specific location and grass type to provide the optimal timing.

How often should I aerate my lawn?

Most lawns benefit from annual aeration. Heavily used lawns or those with clay soil may need aeration twice per year. New lawns should wait at least one year before their first aeration.

What soil temperature is ideal for aeration?

Cool-season grasses should be aerated when soil temperatures reach 55-65°F. Warm-season grasses prefer soil temperatures of 65-70°F. Soil that's too cold won't recover well, while soil that's too warm may stress the grass.

Can I aerate when my lawn is dormant?

Generally, no. Aerating dormant grass can cause damage and slow recovery. Wait until your grass is actively growing, which typically occurs when soil temperatures reach the optimal range for your grass type.

Should I water before or after aeration?

Water your lawn 1-2 days before aeration to ensure the soil is moist but not saturated. After aeration, water deeply to help the soil settle and promote recovery. Avoid heavy watering that could wash away soil from the aeration holes.

How long should I wait before mowing after aeration?

Wait at least 2-3 days before mowing to allow the grass to recover. When you do mow, raise your mower height slightly to reduce stress on the recovering grass.

Can I fertilize immediately after aeration?

Yes! Aeration creates the perfect opportunity for fertilizer application. The holes allow nutrients to reach the root zone more effectively. Apply fertilizer within 2-3 weeks after aeration.

What's the difference between spring and fall aeration?

Fall aeration is preferred for cool-season grasses because it allows recovery before winter and prepares the lawn for spring growth. Spring aeration works but may interfere with spring growth. Warm-season grasses should only be aerated in spring.

How do I know if my lawn needs aeration?

Signs include: water pooling on the surface, grass that looks stressed despite proper care, soil that feels hard and compacted, or if your lawn hasn't been aerated in over a year. A simple test is to stick a screwdriver into the soil - if it's difficult, aeration may help.

Can I aerate during drought conditions?

No, avoid aeration during drought or extreme heat stress. The grass needs to be healthy and actively growing to recover properly from aeration. Wait for more favorable conditions or the next appropriate season.