Local Tree Service Explains Common Causes of Brown Leaves in Summer

June 24, 2020

During the summer months, you expect your trees to grow well and thrive with regular watering. The leaves should stay green and healthy, shading your yard throughout the season. However, that doesn’t mean that’s what will happen every year. Some trees, despite your best attempts at caring for them, will develop brown or dead leaves even during the peak of the growing season. There are a few common situations and conditions that can cause your trees’ leaves to brown and whither. Here’s what you need to know so you can discuss your concerns and next steps with your local tree company. 

Getting Too Much Sun
Your trees need plenty of sunlight to grow well throughout the year. But did you know that too much sunlight can be a bad thing? The sun can scorch the leaves and cause those leaves to turn brown and die. Worse, saving those leaves is almost impossible. Leaf scorch from too much sun is most common with younger and less-established trees. 

If you think your trees are suffering from too much sun, you may be able to move them to a shadier part of the yard. If you’re not comfortable transplanting the trees, you can always hang canopies to block the harsh summer sun when it’s at its peak. Your trees will still be able to get the sun they need to thrive, but not so much that the leaves brown and die.

Not Getting the Right Amount of Water
You know that watering your trees regularly is the key to helping them grow, but you need to make sure you’re using the right amount of water every time. If you’re using too much water, the leaves may start to yellow and die. If you use too little, the tree won’t be able to support the new leaves’ growth and will drop them quickly.

Look at your watering habits and the soil around the trees’ roots. If you’re watering so much that the soil is always wet, try to back off on your watering schedule. Remember, your soil should be damp, but not wet. If the soil never seems to hold onto the water or you notice it’s staying dry more often, speak with your tree company to discuss your options. They’ll be able to help you address the problem quickly. 

The Roots Are Damaged
Though the root systems of established trees are able to withstand damage relatively easily, but that doesn’t mean they can’t get damaged. The number one leading cause of damaged roots is soil compaction. When this happens, the roots of your trees won’t be able to get the oxygen and nutrients they need to thrive. This can happen even if you water properly. 

Take a look around your trees and pay close attention to the condition of the soil. If it’s still loose and properly aerated, but you notice that your leaves are still turning brown, you’ll want to look for other potential causes. However, if you notice that the soil is tightly compacted around the base of your tree, call your tree care service. They’ll help you figure out the best way to loosen the soil and rejuvenate your trees’ roots and health.

You Fertilized Too Much
Fertilizer is a great way to improve the nutrient makeup in your yard’s soil. When applied properly, it can stimulate better growth and improve the health of your trees, shrubs, and landscaping. However, if you use too much, you can end up hurting your plants severely. The overabundance of fertilizer changes the chemical composition of the soil and leads to leaf scorch and discoloration. Worse, it can severely threaten the health of the tree both during the current growing season and into the future.

If you think you overfertilized your yard, let your tree company know as soon as possible. In most cases, trimming back the damaged growth and flushing the soil with water will do the trick. However, in some instances, you may need a more professional approach. The sooner you tell them what’s happened, the easier it will be to come up with a solution. You may be able to restore the soil to its original chemical composition so your trees can recover and grow normally. 

Insects Are Causing Trouble
Unfortunately, Denver’s climate is ideal for many different types of insects. Those insects often burrow into the tree and damage its vascular system in a matter of weeks. When this happens, the tree can’t deposit nutrients and water to the parts of the plant that are damaged. You’ll notice an increase in yellowing or brown leaves and may even see dead growth popping up amidst other healthy limbs.

If you notice anything out of the ordinary, schedule an appointment with your tree care company as soon as possible. Professional pest remediation may be needed to fully remove the problem. Once you address the infestation, you’ll need to figure out how best to treat your trees so they can recover if possible. In many cases, you’ll need to remove the damaged limbs and growth completely. Once it’s gone, the tree will be able to support new growth for years to come. 

Keep in mind that it’s always best to hire a professional to handle any tree trimming and growth removal. They’ll be able to make sure the growth gets removed properly and without damaging the rest of the tree. Over the course of your tree’s lifespan, this can make a huge difference in the quality and volume of its growth as well as its long-term health. 

Don’t Let Bad Growth Keep Your Trees From Looking Great
If you’re worried about your trees and notice brown, yellowing, or dying leaves in the canopy, don’t leave them in place. Contact our team to schedule an inspection and let us take a look. We’ll be able to assess the overall health and condition of your trees to determine what needs to be done. Once we have a plan in place, we’ll do everything we can to make sure things get taken care of quickly.
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