Tag chinese tallow tree

Different species and types of trees responded differently to the low temperatures.
Visit our previous posts for specific info:

• Live oak
• Crape myrtle
• Ash
• Elm
• Palms

My Tree Leafed Out in Spring 2022 but is Now Turning Brown. Is That Freeze Damage?

Due to the unprecedented nature of the winter weather in 2021 and 2022, it has been difficult to predict exactly how trees will respond and the nature and timing of any freeze-related decline.

• Some species have seemed to bounce back from freeze damage only to show browning and die back after two or more growing seasons.

  • Red oaks and Japanese maples have been observed to leaf out in the spring as normal, only to start browning a few weeks later.

  • Unfortunately, once a tree’s canopy has completely browned or died, the tree may not be salvageable.

• If a tree has partial browning or only some dead canopy:

  • Prune out the dead or dying sections

  • Follow good watering practices

  • Use soil amendments focused on increasing available nutrients

    • High nitrogen fertilizer is NOT recommended, as this can stimulate the tree to use up energy reserves to push new growth rather than increase overall health

Should I Be Worried About Cracks in the Bark of My Trees?

Freeze-thaw cracks occur when rapid temperature swings cause the wood of a tree to swell and contract faster than normal. These cracks vary in size and severity. When the water inside a tree freezes, it can damage the tree’s vascular system, which moves nutrients throughout the entire tree. Widespread damage to the vascular system can lead to tree death.

Trees with freeze-thaw cracks need special care to encourage vascular system growth and nutrient availability.

• Proper watering is essential.

• Soil amendments and low nitrogen fertilizers can make additional nutrients readily accessible to the tree’s roots.

  • Fertilizing stressed and damaged trees must be done with care.

  • High nitrogen growth stimulators should be avoided.

• Preventive insect treatment is recommended.

  • Cracks or other wounds in the bark are entry points for borer beetles and other pests.

  • Over time, the tree will be able to seal off (“compartmentalize”) the damaged sections, but this can be a slow process.

Why Does My Tree Have Large Dead Branches?

In cases where only parts of a tree were subject to severe frost damage, the main trunk may be free of freeze-thaw cracks or other issues while some large or small sections of the tree show browning and dieback. With rapid temperature swings and violent winter weather, a tree’s specific location and surroundings (such as nearby structures or other trees) can have a great impact on how the tree is affected. Because of this, trees of the same species on the same block may have shown wildly different responses to freezing weather. No matter the extent, it is best to remove dead and dying sections of the canopy and bolster the tree’s health with water and nutrients to give it the best chance to compartmentalize the dead and decayed sections and return to health.

At Texas Tree Surgeons, we love trees and we love our community! Recent extreme weather events present new challenges to our urban forest and it will likely be a few years before we have seen the full effects. Trees, by their nature, respond slowly to environmental changes and, if not properly cared for, can slide into a cycle of decline following storm damage or other severe weather. As we move into the heat of the summer our current drought conditions can worsen and accelerate tree decline and dieback. Now is the time to have one of our arborists evaluate your trees for their current needs and prescribe a health care plan to increase soil nutrient levels and manage insect activity. Contact us today!

While North Texas is full of natural beauty, the changing color of leaves in the fall is not generally seen. More often than not, our trees are green for most of the year, and then drop their leaves quickly once real winter hits. However, there are a few common North Texas trees that do show some fall color, and there are also a few places close by in Texas that you can visit to get your fill of colorful fall leaves.

Why do leaves change color in the fall?

While we think of leaves as being green, in reality they contain pigments of many different colors, depending on the species. Yellow is one of the most common secondary pigments, along with orange. These colors are not usually seen, however, because the amount of green in the leaf, provided by chlorophyll, greatly eclipses the amount of other colors. The green-colored chlorophyll is an essential part of the plant’s ability to absorb sunlight and convert it into usable energy. During the spring and summer, leaves eagerly process the ample amounts of sunlight and help the plant to grow.

As the year winds down, however, and the weather turns cooler, the amount of daylight lessens. This drop in light and temperature triggers a change in the leaves. The vast stores of chlorophyll in the leaves are no longer needed, and begin to break down. The strong green color begins to fade and be replaced by the underlying pigmentation, such as yellow or orange. Related chemical reactions in the leaves can also produce other colors, like reds or purples. A mixture of several different pigments can appear as brown.

What determines a tree’s fall color?

The exact color of leaves in the fall depends on several factors:

• Species

  • This has the biggest impact on fall color.
  • Oaks usually appear brown.
  • Some maples show red, yellow, or orange.
  • Dogwoods and sumacs can exhibit purple leaves under some conditions.

• Light

  • Depending on your latitude, the change in amount of light from summer to fall can vary greatly.
  • A tree’s physical placement can also affect its reaction to the light changes.

• Temperature

  • Low (but not freezing) temperatures over an extended period of time can help with the generation of certain pigments, like reds.
  • Early frosts can stop pigment from developing further.

• Rainfall

  • Excessively wet weather can dull fall colors.
  • Hot and dry summers can deplete a tree’s resources, affecting fall color production.

Why don’t we see fall color in DFW?

Unfortunately, the trees common to North Texas, combined with the climate, do not make for vibrant fall color.

• Oaks, one of the most common trees in DFW, generally show brown fall coloring.
  • Live oaks, however, are usually green through winter and drop brown leaves in the spring.
  • Red oaks can show their namesake-colored leaves in the fall, if they don’t drop their leaves early.
• Elms and other trees common to our urban forest do show some yellowing in the fall.
• While maples are known for their bright fall colors, they are not very common in North Texas, and when they are planted, are usually smaller than the oaks, pecans, and elms around them.
• Our dry summers and wet autumns usually make for muted fall coloring, and we generally have sudden, drastic temperature changes rather than slower cooling.

Are there any North Texas trees that show vibrant color?

While there are few native trees that exhibit fall color, a few imported species can do well here and give a better chance of a dramatic change.

• Chinese pistache (Pistacia chinensis) is a common sight in our urban forest, and, under the right conditions, can turn an earthy red color in the fall.
  • Be sure to plant the pistache where there is good drainage, or it may develop health issues.
  • Arborist Tip: Chinese pistaches are more likely to show fall color when both male and female (berry-producing) trees are present.
• The tallowtree (Triadica sebifera) is less common than the Chinese pistache, but can produce a variety of fall colors.
  • Be careful, though, as the tallowtree is not cold-hardy.
• Maples do not always do well in our climate and soil here, but if you can get one to become established, you have a great chance to see fall color.
  • The Japanese maple is a well-loved ornamental tree that can showcase beautiful colors. One variety has coral-colored bark, for a spark of color even when the leaves have fallen!
  • The most common color is red, but some species can show yellow or purple.

Where can I go to see fall color in Texas?

Although we may not have an impressive fall showing in North Texas, there are several places in Texas that do.

• Tyler State Park, just a short trip from DFW, is full of maples, dogwoods, and sweetgums that can show a variety of fall coloring.
• Lake Bob Sandlin, in East Texas near Pittsburg, also is known for its fall foliage.
• Check out this article for more suggestions!

At Texas Tree Surgeons, we love trees (whether they turn colors in the fall or not), and we love our customers! We are always happy to talk about planting possibilities to introduce color to your yard. While we can’t guarantee leaf change in the fall, we do have several great options for spring color! As always, let us know if you have any questions, are looking for planting recommendations, or want to know how best to take care of your trees!