Understanding Lawn Dormancy
An inherent part of the lawn’s adaptation is not to grow when conditions are unfavourable. Lawns may go dormant in hot and dry conditions or during cold winters depending on the species of turf.
Before a lawn enters dormancy, adjusting how mowing equipment moves across the turf can help maintain a more balanced surface and reduce repeated wear. Pattern Matters Dormancy Guide highlights why changing mowing directions from one session to the next can be useful, particularly in areas that receive frequent mowing or foot traffic. Alternating patterns can help limit wheel tracks, reduce pressure on the same sections of soil, and encourage a more uniform appearance. When combined with the appropriate mowing height and suitable timing based on weather conditions, these practices can help prepare the lawn for a healthier dormant period.
The ability to affect the growth of grass.
The way mowing patterns are set up can influence the uniformity of grass management in a lawn. When repeatedly mowing in the same direction, the blades tend to lean and encourage a non-uniform growth pattern. Switching the direction of mowing usually reduces the cutting pressure in one area versus another and can promote uniformity of plant structure before dormancy.
Preventing Excessive Stress
Too much loss of foliage causes stress to grass. You can use a mowing pattern that can help to maintain an even cutting height throughout the lawn if mowed in a consistent and proper manner. It is especially critical not to allow unneeded scalping before dormancy since the weakened grass may have fewer resources to cope with the unfavourable environmental conditions.
Supporting Root Health
In dormant seasons, grass is most likely to survive if roots are healthy. The pattern of how the grass is mowed does not directly affect the growth of the roots, but the practice of mowing can help to ensure that leaf tissue is healthy and can continue to contribute to the plant’s energy production. Good mowing practices, such as mowing at the proper height and not over-mowing, can therefore have a secondary benefit of building better root systems.
Reducing Soil Compaction
Several times the same areas of soil may be cut with mowing machinery which can exert repeated pressure. Over time, this may contribute to compaction, particularly when the soil is wet. Compacted soil may hinder the movement of air and water to the grass roots.
Improving Moisture Management
Grass must have sufficient moisture before going dormant, especially when dormancy is caused by cold weather and/or drought. Mowing extremely short may expose more soil surface to dry out. Proper grass height and diversified mowing practices can help to achieve uniform ground cover and avoid unnecessary stress.
Protecting the Lawn Surface
Mowing several times in the same direction can cause noticeable wheel tracks and uneven wear. This rotation of pressure will help distribute mechanical stress across a different area of the sod. This can be particularly beneficial in highly mowed or low soil hardness zones.
Ensuring even sunlight exposure
When all the grasses are of the same height, the sun can reach the grass more evenly. Often with an even condition of mowing, the unevenness of the grass can lead to different zones of light. A uniform canopy can help promote uniform growth during the dormant season.
The ideal height for the grass is the secret to a healthier lawn.
The actual pattern may not be as important as the mowing height. This height depends on grass species, climatic and seasonal conditions. Trimming too close or letting grass grow too tall during dormancy can cause stress, and allow other issues to develop. It’s better to follow recommendations for the specific type of grass rather than a universal height.
Adjusting to the weather.
Weather and local growing conditions will influence the effectiveness of mowing practices. Grass may require less frequent cutting during drought or during extremely hot or cold conditions. Some soils will have better water-holding capacity and homeowners can use growth and soil moisture monitoring to determine if they should increase or decrease the frequency and direction of mowing.