New – Regional Aerification Calendar
Planning your next round? Check aerification dates submitted by participating golf facilities across the region.
Freshly aerated greens may not be every golfer’s favorite sight. Putts can bounce, sand may stick to your ball, and the surface might look a little rough. But aeration is an important part of keeping golf courses healthy, playable, and ready for the seasons ahead.
Why Do Golf Courses Aerate?
Aeration creates small openings in the turf and soil. These openings help manage compaction and organic matter while improving the movement of air and water through the root zone.
Healthier Roots
Foot traffic, carts, and maintenance equipment can compact soil. Aeration creates space for air and water, supporting healthy roots and stronger turf.
Better Water Movement
Western Washington’s wet months make water management important. Aeration and topdressing help water move through the soil, although they do not replace a functioning drainage system.
Less Organic Matter Buildup
Roots and other plant material accumulate near the surface over time. Too much can hold excess moisture and contribute to soft, spongy conditions.
More Consistent Conditions
By supporting healthy turf and managing the soil, aeration helps courses provide firmer, more consistent playing conditions over the long term.
What Happens Beneath the Surface?
Aeration creates channels in the soil. The method a course uses depends on the turf, soil conditions, weather, and the goals of its maintenance program.
Creating Channels in the Soil
Openings help air and water move into the root zone. On greens, sand is often worked into the holes.
Hollow Tines and Solid Tines
Hollow tines remove plugs of soil and turf. Solid tines create openings without removing a core.
Common Aeration Practices
Core Aeration
Hollow tines remove small plugs of soil and turf. The holes are often filled with sand, especially on greens. Golfers may notice visible holes, sand, and a temporary effect on how putts roll.
Solid-Tine and Small-Tine Aeration
Solid tines create openings without removing plugs. Smaller tines, venting, and spiking can be used to support air and water movement with less surface disruption.
Deep-Tine Aeration
Deep-tine equipment reaches farther into the soil to address conditions below the surface. Its effect on play varies with the equipment and approach used.
Sand Topdressing
Sand is spread and worked into the turf, often after aeration. It helps fill holes and dilute organic matter, supporting firmer, smoother greens over time.
Timing and Recovery
Courses often aerate in spring or fall, but schedules vary. Turf needs to be healthy and actively growing to recover, so superintendents balance course conditions, weather, and the golf calendar.
Recovery depends on the method, hole size, grass health, and weather. Cool temperatures or heavy rain can slow the process. Our Aerification Calendar includes expected recovery information when a facility provides it.
It’s Not Just the Greens
Fairways, approaches, and tees also receive traffic and benefit from aeration. Each area may be maintained differently based on its soil and how it is used.
Know Before You Go
Check our Aerification Calendar for dates submitted by participating facilities. Schedules and recovery times may change, so contact the course directly for the most current conditions.
Thank you to the superintendents and maintenance teams whose work keeps Western Washington’s golf courses healthy and playable.