Summer Fertilization for Denver Trees

If you’re a Denver tree-owner, summer fertilization is essential this year! Learn more about the benefits of fertilizing your trees.

Summer is the time when many people like to spend time outdoors, enjoying the warm weather and sunshine. It’s also a great time to fertilize your trees!

Fertilizing your trees during summer has several benefits: it helps improve the overall health and longevity of your trees, strengthens their resistance to pests and diseases, and can even help them recover from stress.

Do My Trees Need Fertilizing?

Fertilization is the process of adding vital nutrients to the soil to help your trees and shrubs grow. To thrive, trees need three main types of nutrients: nitrogen, phosphorus, and potassium. These nutrients are essential for tree growth, but they are often lacking in urban soils. 

Denver soil composition poses its own set of unique challenges. The summer heat and dryness can deplete the soil of key nutrients, making fertilization an important part of summer tree care.

You might be wondering, how do I know if my trees need fertilizing? There are a few signs that can indicate that a tree is lacking in basic nutrients:

  • The leaves are small or pale
  • There is decreased new growth
  • The tree is not as vigorous as it used to be

If you notice any of these signs, your tree might benefit from fertilization. In general, young trees (up to five years old) and newly planted trees do not need to be fertilized because they are still establishing themselves. Established trees might need fertilizing if they are showing signs of stress, such as yellowing leaves, poor growth, or thinning crown.

Drought and Tree Stress

There are special environmental circumstances that put all types of trees under stress, such as drought. In these cases, trees need an extra boost from fertilization to help them recover.

Drought causes stress on trees because they cannot take up enough water to meet their needs. This causes the leaves to wilt and the tree to stop growing. Eventually, the tree will start shedding leaves to conserve water. If a drought is severe enough, it can kill a tree.

Fertilizing during summer can help alleviate some of this stress by giving the tree the nutrients it needs to repair damage and regain its full strength. Denver has experienced a rather severe winter drought.  As a result, summer fertilization is particularly important this year.

The best way to determine which of your trees and shrubs may need fertilization treatment is to schedule a consultation with one of our trained arborists!

Denver Trees Have Specific Fertilizer Needs

Different tree species have different fertilizer needs. For example, deciduous trees need more nitrogen than evergreen trees. The type of soil in your yard will also affect how much fertilizer your tree needs and how often you should fertilize it.

Colorado is a very arid climate and the soil is high in alkaline concentration. This means your Denver trees aren’t getting nearly the nutrients they would get in more humid climates like along the east coast, or by the riverbanks in the Midwest. What’s beneath your trees is a bunch of Colorado clay!

As a result, Denver trees and shrubs typically need a fertilizer that is heavy on  nitrogen, phosphorus and potassium. This is also called a “complete” fertilizer because it contains all three of the essential macronutrients.

Why Is Summer A Good Time To Fertilize My Trees?

Fertilizing in the spring and fall will help your trees thrive year round, but if you want to aid their recovery from the environmental stress from this past year, supplemental fertilizer application in the summer season is essential. Here are a few reasons why:

  • Summer is a good time to fertilize trees in Denver because the roots are actively growing and can absorb nutrients efficiently.
  • The warm summer weather and longer days stimulate growth.
  • Fertilizing in summer also helps trees develop a strong root system before winter sets in.
  • Fertilizing in summer helps newly transplanted trees become established more quickly and can give mature trees the nutrients they need to produce a strong flush of new growth.
  • Summer is also an ideal time to correct any nutrient deficiencies that may have developed during the previous growing season.

Fertilize Now and Reap The Benefits Later

Summer fertilization applications have immediate benefits, but they also provide long-term advantages for your trees and shrubs. By fertilizing during the summer, you are helping to ensure that your trees and shrubs will be better equipped to withstand the challenges of drought and winter weather.

Fertilization creates a strong, healthy tree that can withstand the impact of dry conditions, extreme weather and pest infestation.

Winter can be tough on trees, with cold temperatures, ice, and snow all taking their toll. But if your trees and shrubs are healthy and well-nourished, they will be better able tolerate the stress of winter weather.

So don’t wait until fall to fertilize your trees and shrubs. Summer is a great time to give them the nutrients they need to stay healthy and thrive.

Schedule With a Certified Arborist Now

Consider summer fertilization to improve the health of your trees and help them resist problems down the road. With careful selection of fertilizer and attention to watering, you can ensure that your trees get the nutrients they need without any negative consequences.

So don’t be afraid to try summer fertilization on your Denver trees. Contact us today for a free consultation and get on the books for fertilization treatments this summer!