Daily Archives: August 11, 2023

How to Take Care of Your Tree During Summer Heat & Droughts


During severe heat, with temperatures regularly reaching over 100-degree Fahrenheit, don’t forget that your trees need water and can show signs of heat stress during this drought-inducing weather. Trees signal drought stress with several symptoms, starting with foliage turning from dark green to light green, then browning at the leaf margins, wilting, and eventually prematurely dropping its leaves. During high temperatures, healthy trees can drop a significant portion of its leaves to conserve moisture. This usually doesn’t kill the tree, but can hold them back for a while until they recover.

What about my Evergreen?

Evergreen is a bit of a misleading term because even evergreen plants have to shed older leaves and needles, the same way you have hair on your head all the time, but still lose hair every day. Healthy trees can regularly drop up to 10% of their existing leaves during a drought as a way to conserve moisture and maintain health. If they didn’t drop these leaves, they would lose too much moisture through transpiration, effectively a breathing process that takes place in the leaves.

Continue to follow our watering guidelines for newly planted trees and remember your established trees, as well.  They need some extra relief from the heat. Download our guide HERE.



Fannin also recommends you start spraying the entire tree canopy a few times a week for 30 minutes either in the early morning or the late evening during 100-degrees weather to help the tree get a break from the heat. It will also knock off any dead leaves or small limbs and reduce the stress.  An oscillating sprinkler with an adjustable spray that goes back and forth to cover the entire tree canopy will be helpful in this endeavor. Stay on track with your fertilizing schedule and increase your SUPERthrive treatment to every other week if your tree shows signs of stress for at least two months.

Signs of Drought Stress in Trees

Signs of drought will be most visible in the foliage of trees. Look for the following symptoms in times of short-term drought.

  • Temporary Wilting: Wilting and drooping leaves will occur during the day. Leaves will recover and appear normal by morning.
  • Permanent Wilting: As droughts progress, leaves will remain wilted even in the early morning.
  • Yellowing Leaves: Before dropping foliage, leaves will turn yellow and exhibit fall color (Figure 1).
  • Leaf Scorch: Leaf margins will have a brown or burned appearance (Figure 2).
  • Defoliating Trees: Trees will generally begin to lose their leaves from the top and branch ends (Figure 3).
  • Bark Cracks: During prolonged droughts, trees might develop longitudinal cracks in the bark, especially in thin-barked species like maples (Figure 4).


Introducing Fannin Tree Farm’s Professional Tree Fertilizer

Fannin Tree Farm Professional Tree Fertilizer


It’s August – time to fertilize your trees!

Fannin Tree Farm is excited to announce we are replacing our Osmocote recommendation for newly planted tree after-care to our “slow release” Fannin Tree Farm Professional Tree Fertilizer. Our new fertilizer is designed specifically for trees and is recommended to be used in April and August. In May, Fannin started planting our trees with the Fannin Tree Farm Professional Tree Fertilizer along with a preventative treatment for environmental insect issues such as bores and aphids as an added benefit for our customers at no charge.

Review more information about why you should use our fertilizer below!


Why Fannin’s Professional Tree Fertilizer?

In most of the Dallas-Fort Worth area, the soil is very high in calcium and magnesium is limited. Fannin’s Professional Tree Fertilizer aids in balancing nutrition and improves uptake of other nutrients such as nitrogen, phosphorus, and iron. It also plays a role in developing plant cells and the chlorophyll molecule (which is responsible for photosynthesis).


Where can I get Fannin’s Professional Tree Fertilizer?

We have our Fannin Tree Farm Professional Tree Fertilizer in our retail center in Frisco, Texas.  You can buy it with your tree purchase and come in any time and buy a new bottle as needed.


What if I still have Osmocote to use for the August fertilizer treatment?

You can still use the Osmocote to finish out what you have, but when getting ready to re-stock we highly recommend you do so with Fannin’s Professional Tree Fertilizer.


Can I use Fannin’s Professional Tree Fertilizer on all of my trees?

Yes, you can. While newly planted trees definitely need the fertilizer in April and August, you can use it on all your trees regardless of age.


Have additional questions? Please give us a call at 972-747-9233 or come on by the farm!