Aeration

Core aeration can help make your lawn healthier and reduce its maintenance requirements through these means:

• Improved air exchange between the soil and atmosphere.
• Enhanced soil water uptake.
• Improved fertilizer uptake and use.
• Reduced water runoff and puddling.
• Stronger turfgrass roots.
• Reduced soil compaction.
• Enhanced heat and drought stress tolerance.
• Improved resiliency and cushioning.
• Enhanced thatch breakdown.

Why Is Aeration Necessary?

Compact soil prevents grass from establishing a healthy root system and keeps water and fertilizer from reaching the roots.

In most home lawns, fertile topsoil may have been removed or buried during excavation of the basement or footings, forcing grass to grow in subsoil that is more compact, higher in clay content and less likely to sustain a healthy lawn.

Walking, playing and mowing will compact soil and stress lawns. Raindrops and irrigation further compact the soil, reducing large air spaces where roots readily grow. Compaction is greater on heavy clay soils than on sandy soils, and it is greatest in the upper 1 to 1 1/2 inches of soil.

Aeration can help relieve soil compaction, allowing your grass to grow deeper roots and make better use of water and fertilizer.

Why Aerate?

• Improved air exchange between the soil and atmosphere.
• Enhanced soil water uptake.
• Improved fertilizer uptake and use.
• Reduced water runoff and puddling.
• Stronger turfgrass roots.
• Reduced soil compaction.
• Enhanced heat and drought stress tolerance.
• Improved resiliency and cushioning.
• Enhanced thatch breakdown.

ROOT GROWTH

Core aeration allows air, water and fertilizer to better reach the root zone. This stimulates root growth to create healthier, stronger turfgrass plants.

How Often Should Lawns Be Aerated?

Most home lawns benefit from annual aeration. Heavily used lawns, or those growing on heavy clay or subsoils may need aeration twice a year. Golf fairways, sports turf and municipalities may need aeration three to five times per year depending on the amount of use. Again, turf responds best when tine spacing is closer and penetration is deeper.

When Is The Best Time To Aerate?

If you have cool season turfgrass such as Kentucky bluegrass and perennial ryegrass, both spring and fall are ideal times to aerate. In spring, aerate between March and May. Perform fall aeration between August and November. Aeration before or at the time of late season fertilization enhances root growth and improves spring greenup and growth.

Warm season turfgrasses such as zoysiagrass and bermudagrass should be aerated in mid-spring to summer. Avoid aerating when warm season grasses are dormant – it may encourage weed competition. In addition, avoid aerating warm season grasses during spring greenup, and not until after their first spring mowing.