Trees vs. Turf: What You Need to Know
Trees and turf can coexist, but there are important considerations to keep in mind. Grass tends to compete with trees for nutrients and water, especially in shared landscapes. Turf requires regular irrigation, and this can be a problem, particularly for water-sensitive trees like evergreens. Turfgrass can deplete the soil of nutrients that trees need to thrive, and the constant mowing and trimming can physically damage tree roots.
Artificial Turf and Tree Health
Turfgrass often has a dense root system, but it’s shallow, typically only a few inches deep. Tree roots, on the other hand, spread much deeper and further out. The competition for nutrients, water, and space can put extra stress on trees, especially when turfgrass is overwatered or regularly fertilized.
Artificial turf and tree health present a different set of challenges. While artificial turf removes competition for water and nutrients, it can trap heat and reduce soil aeration, leading to stress on tree roots. Proper installation techniques and regular monitoring are essential to help trees stay healthy when artificial turf is part of your landscape.
Are Some Trees More Sensitive to Turf?
Yes, evergreen trees such as Douglas firs, cedars, and spruces tend to be more sensitive to turf, mainly because they don’t like constant moisture at their root zones. Turfgrass irrigation systems are often set up to keep grass lush, but trees prefer deep, infrequent watering, much different from the shallow, frequent irrigation turf requires.
Recent Turf Cases in Portland: When Turf and Trees Don’t Mix
I recently visited a property in Portland where turf and a large cedar tree had been coexisting for several years. The homeowner had used the space under the tree for turf, thinking it would be a beautiful addition to the yard. However, after a few seasons, the tree showed clear signs of stress. The roots were struggling to get enough water, and the tree’s growth was stunted.
Upon closer inspection, we realized that the frequent lawn care maintenance, especially the use of lawn mowers and weed whackers around the base, had caused physical damage to the roots. We recommended removing the turf around the tree and replacing it with a native ground cover that would be less competitive for nutrients. Over time, we hope the tree will bounce back, but this case highlights the damage that can be done when turf is placed under trees without proper care.
The Compaction Problem
Lawns that see frequent foot traffic or have mowing equipment running over them can lead to soil compaction. Compaction makes it harder for tree roots to access the oxygen and water they need to thrive. This can stunt growth, weaken the tree, and cause long-term damage to the root system.
Turf-Free Alternatives for Healthy Tree Landscapes
Instead of turf, I recommend considering other ground covers or mulch under trees. Ground covers that require less water, like clover, can be a good option, or you can mulch the area to maintain moisture levels without the negative effects of turfgrass.
How Turf With Trees Can Coexist
If turf is already in place and you’re not having issues with root damage, it’s not necessarily a problem. But keep an eye on the tree’s health, and make adjustments if needed. Consider shifting the turf line back a few feet to give your tree more space or adding a tree ring for protection.
Need Help Protecting Your Trees from Turf Damage?
At Urban Forest Pro, we understand the delicate balance between turf and trees. If your lawn is competing with your trees for resources or causing harm, our team of experienced arborists can assess the situation and provide solutions to help both thrive. From ground cover recommendations to turf management strategies, we’ve got you covered.
Ready to ensure your trees and turf coexist harmoniously? Contact Urban Forest Pro today for expert advice on how to protect your trees while maintaining a beautiful yard.
