Keep your trees vibrant for a long time with these tips for root protection, effective watering, and more. Mature trees are valuable staples in your yard because they take a long time to become established and become beautiful specimens that provide shade and year-round benefits for wildlife. Protecting your landscape by keeping it healthy is an effective way to invest in its long- term appearance.
It’s easy to take mature trees for granted because they thrive without our help and provide great beauty and enjoyment. However, extreme weather events can cause damage. Follow these steps to ensure your trees are healthy, resilient, and able to withstand harsh winds, heavy rain, and extended droughts for generations.
Know your tree’s needs
Research and write down your tree’s needs.
If you’re not sure what’s growing in your yard, use the Arbor Day Foundation’s online dichotomous key to identify your trees. How much water do trees need and what type of soil do they prefer? Even if rainfall alone provides sufficient water, it is important to know the moisture conditions a tree prefers.
Ideally, the tree is planted in the right place and grows well in existing soil conditions. If you are unsure whether your tree is in the right location, seek advice from an arborist (Add Support Links). Are trees drought tolerant? If not, monitor them carefully during periods of drought and provide supplemental water as needed. What are trees sensitive to? Some are sensitive to high winds, saltspray, drought, overwatering, or root competition with other plants. Be aware of this sensitivity and avoid exposing your trees to stressors.
Protect tree roots
Healthy roots are essential for a healthy tree.
This means healthy soil is also important. Tree roots need oxygen to absorb nutrients. This is why healthy soil has air spaces. Compacted soil is one of the biggest threats to tree roots. This is because compaction impedes water penetration and oxygen into the root zone. The focus is on protecting the roots and soil within the tree’s critical root zone (CRZ). CRZ is defined as the tree’s drip line, an imaginary circle drawn on the ground corresponding to where the tree’s branches extend. The reality is that tree roots extend beyond the drain pipe and the roots below ground are not symmetrical with the branches above ground.
However, roots within the CRZ are the most sensitive area to disturbance. This means that you should not compact the soil or change the soil grade within the tree’s CRZ. Doing so can cause serious damage to the roots and soil structure, which can reduce the tree’s health over time. Are you ready to redesign your garden? Find landscape designers near you at WNYTreescape.
Protect your tree bark
The bark is like a living armor that protects the tree. If the armor is damaged, fungal or bacterial infections can easily develop and rot from the inside, harming the tree. Causes of tree bark damage include:
Rotate spray head. If a sprinkler head hits a tree trunk in the same place, especially at close range, it can cause damage to the tree bark. To prevent the water stream from directly hitting the trunk, change the spray arc direction of the spray head.
Rub the branches. When branches get tangled and rub against each other, wounds form on the tree bark. See tips below on how to properly prune branches.
Lawn equipment. Has your tree been attacked by a weed whacker? Keep lawn mowers and all lawn equipment away from tree trunks.
Vehicle. Trees near driveways and roads can sometimes be struck by tall delivery trucks or other vehicles. To prevent damage to your vehicle, you can remove lower limbs from trees in your area and use small reflectors, available at hardware stores, to make tree trunks visible at night.
Water effectively
A well-established, mature tree will grow well in existing soil and moisture conditions. However, depending on the species, soil conditions and local climate, prolonged drought can lead to extinction. That’s why it’s important to ensure the overall health of your trees so they can recover more resiliently during stressful droughts.
If your tree has not been recently planted, there is no need for additional watering during the winter when it is dormant. The best time to water your tree is during summer heat or drought. Infrequent, deep watering is the preferred schedule for trees. Occasional soaking is better than frequent spraying. We recommend this with the caveat that drought is a time when we need to conserve drinking water instead of using precious resources to keep our landscapes lush. Keep your trees healthy with healthy soil to give them the best chance of surviving drought.
Appropriate pruning
The dormant winter season is a good time to prune trees before they produce new growth in the spring. Look at the overall structure of the tree and choose which branches need to be removed. If you are new to pruning, consider hiring a professional who can teach you proper techniques or do simple pruning tasks for you.
The basic instructions are as follows:
Cross the branch. If the branches cross and rub against each other, the bark may get scratched. Typically, smaller diameter branches are removed to promote the growth of stronger, sturdier branches. Trees with multiple trunks can also be pruned to straighten and thin out their shape.
Dead and broken branches. If you cut it cleanly and remove the tree, it will heal on its own. Leaving dead or broken branches on a tree can cause severe damage and introduce moisture and organisms that can reduce the quality of the tree.
low branches. If necessary, the tree can be “bridged” to remove lower branches. Removing low branches is a way to allow more light into the space beneath the tree, and is mostly for aesthetic purposes. Remove low branches that are prone to damage, such as near roads where they may be impacted by vehicles. WNYTreescape find the gardening tools you need for your project in our store.
Maintain healthy soil around your trees
Trees in the forest grow well on their own even without human touch. Forests have an intact layer of decaying organic matter that regularly fertilizes the soil and creates a rich microbial environment that helps roots absorb nutrients. The leaf layer also retains moisture in the soil and creates a soil structure that is good for water infiltration. There are two ways to mimic this process in a home environment. Mulch around the tree using purchased mulch or fallen leaves from your yard. You only need to store them in a 2–4-inch layer. At deeper levels, the roots become suffocated. Make sure the mulch is kept away from the stem and root flare. Plant ground cover and grass to allow dead plant material to decay in the soil. You can plant shade-tolerant plants in the shade of mature
trees to act as “living mulch”. Plants help maintain a healthy soil environment and can look much more attractive than bare mulch. Use plants with spreading roots to avoid root competition with trees.
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