The Best Times to Aerate
The best time to aerate varies by reg ion but generally the best time for Colorado is in
the Spring and Fall seasons away from the summer heat. Lawn experts recommend
aerating once per year for best long-term results, especially in high-trafiic areas (ie. if
you have dogs and children). Lawns that are aerated on a regular basis consistently
produce better plugs.
For optimal results the lawn should be watered for an hour prior to aerating,
especially if the soil is hard or has a high clay content. If the ground is too soft, or
too dry, it may not be the best time to aerate.
The Benefits of Aeration
Too much thatch can choke your lawn. Aerating promotes rooting and improves
problematic soil by allowing air into the soil. An Aerator does this job
mechanically without destroying the turf. Core benefits are:
1) Loosens hard compacted soil. Soils that are mountainous, rocky, or clay, benefit
the most as it improves air exchange in the soil.
2) Encourages healthy root growth. Improved development by allowing air, water, and
nutrients direct access to the root system. Hopefully as root growth occurs this is a
sustainable advantage – as the turf thickens this will soften the soil.
3) Core holes increase fertilizer penetration. The holes from coring allow fertiiizer and
soil amendments to enter the soil quickly and easily.
4) Resistance to drought is improved. As roots grow deeper, grass roots will access
moisture at a deeper level. As a result, grass may need to be watered less often. This
saves you money and keeps your lawn green simultaneously.
5) Water absorption is improved. Less runoff means more eflicient use of irrigation
water and reduced water bills.
6) Thatch gets reduced / breaks down: Oxygen is vital to breaking down the thatch.
Allowing your lawn to breathe more as the benefit of aeration also decomposes the
thatch in your lawn at a faster rate. Addiitionaly, bringing soil (plugs) to the surface
introduces organic material to the thatch area which also helps in this breakdown
7) Air and nutrients are allowed direct access to feed the root system which will
enhance the growth of the root base and increase its depth. A stronger, deeper root
system makes the lawn more heat and drought tolerant.
8) Helps struggling new lawns. Core aeration is especially recommended for new
lawns or lawns that are really struggling. This would also be a good time to reseed your
Best of Luck! I hope this answers your question on why to aerate.