Skip to main content
Tree Care

What’s Causing Tree Leaves to Turn Yellow

By August 26, 2021No Comments

Have you noticed leaves on trees in your yard turning yellow already? Are you wondering if it is an early sign of fall? Well you can be pleased to know that there is an underlying reason this is occurring in August, and it is not due to an extremely early arrival of fall.

The root problem is due to the heat wave Alberta has experienced throughout this summer and the lack of rainfall we have received. If you don’t think this summer has been that hot, look at the table below, courtesy of Global News Calgary, and you can see that Calgary has had over triple the average number of hot days per year, and Red Deer double!

Source: Global News Calgary, 2021

The heatwave has been hard on us, but it’s tough on trees too. Trees need to be hydrated regularly and need the proper balance of nutrients to sustain a healthy appearance. When leaves turn yellow, it is a sign that your tree is ‘stressed’. As trees get stressed, leaves begin to fall, and your tree starts to look like fall has arrived – and we don’t want to think about that yet with summer still here.

In urban and rural environments, the trees and shrubs on your property are forced to compete with turf and other vegetation for a nutrient supply and water. This, along with stress from compacted soil and root space infringement, causes deficiencies. Just as plants in your garden need the right combination of micronutrients, so do your trees.

With fall around the corner, now is the time to think about how you can help your trees be the healthiest they can be as frosty weather is soon to arrive and the weather pattern shifts.

Earth Smart Property Solutions offers a Deep Root Tree & Shrub Fertilizer service that is done between mid September and late October (weather dependent*).

Deep Root Fertilization allows nutrients to go straight to the roots, making them easily available for intake.

A few benefits of this service include:

  • Encourages new growth
  • Improves overall health
  • Helps trees and shrubs better withstand our Alberta climate

Deep Root Fertilization* will help increase the plant’s ability to produce and store energy reserves before freeze-up and will assist with winter hardiness.

*Note: We recommend this service be done in the spring and fall for the best results.

Pricing starts at $55 plus GST. If you would like to learn more or want to book a service, please send us an email at, call our office at 1-888-268-8088 or complete a Request for Quote.

We hope you enjoy the last bit of summer before fall really does arrive!


Global News Calgary – Alberta continues to set records during hot, smoky summer