En EspaŅol

Q. Who is Mr. Smarty Plants?

A: There are those who suspect Wildflower Center volunteers are the culpable and capable culprits. Yet, others think staff members play some, albeit small, role. You can torture us with your plant questions, but we will never reveal the Green Guru's secret identity.

Help us grow by giving to the Plant Database Fund or by becoming a member

Did you know you can access the Native Plant Information Network with your web-enabled smartphone?

Share

Ask Mr. Smarty Plants

Ask Mr. Smarty Plants is a free service provided by the staff and volunteers at the Lady Bird Johnson Wildflower Center.

Search Smarty Plants
    
 
See a list of all Smarty Plants questions
Can't find the answer in our existing FAQs, submit a question to Mr. Smarty Plants.
Need help with plant identification, visit the plant identification page.
 
rate this answer
6 ratings

Monday - April 30, 2012

From: Lufkin, TX
Region: Southwest
Topic: Planting, Trees
Title: Scorched leaves on Red Maple from Lufkin TX
Answered by: Barbara Medford

QUESTION:

I have a Red Maple that we planted in Lufkin, TX about a month ago and fertilized about 2 weeks ago. We water the tree often. The leaves have become scorched looking on the outside of about 1/3 of the leaves. What can we do to make the tree healthier?

ANSWER:

Our first suspicion is your tree may be suffering from transplant shock. In the South and Southwest, we always recommend that woody plants (shrubs and trees) be planted in the cold weather of December to February. The trees are dormant then, and damage to roots or trunk is not quite as dangerous, plus you will not be asking a  plant to draw up enough water and nutrient through its tiny fragile new rootlets to survive.

We also recommend that you not fertilize trees, especially natives, especially soon after they are transplanted. The fertilizer wants to force the plant to grow more leaves, which just adds to the stress the tree has already gone through.

To check whether your tree is planted where it belongs, we checked our Native Plant Database for the common name "red maple." Four species of the genus Acer showed up so we selected Acer rubrum (Red maple) for our example.

This USDA Profile Map shows the this particular red maple is native to Angelina County, where it can enjoy the acidic soils that maples prefer.

Read this USDA Forest Service website on Red Maple. Scroll down to "Damaging Agents" and see if anything there sounds familiar.

On the whole, however, we think the problem is in the planting time and perhaps the fertilizer. Knock off the fertilizer. Water by sticking a hose deep down in the earth surrounding the roots and let it dribble until the water comes to the surface. Do this once or twice a week unless you are getting lots of rain, for about 6 months.

 

From the Image Gallery


Utah service-berry
Amelanchier utahensis

Red maple
Acer rubrum

Red maple
Acer rubrum

More Trees Questions

Trees non-toxic for horses in California
May 02, 2011 - I would like to plant next to my pasture. Please send a good variety of nontoxic (for horses) plants for shade. I live in Redding Cal.
view the full question and answer

Pruning native Senna lindheimeriana
September 28, 2008 - I asked a question about pruning a Texas Senna tree. The Texas Senna I have is either a S. wislizenii or a S.lindheimeriana. It is a beautiful tree that I purchased at a Texas Native Plant nursery. ...
view the full question and answer

Tree to plant by pool replacing mulberry in Las Vegas
January 18, 2009 - I am looking for a tree to plant between my house and pool. We just cut down a mulberry that was here due to its invasive root system. Are there any plants that can tolerate Vegas weather, provide a...
view the full question and answer

Problems with non-native weeping willow from Hazlet NJ
July 03, 2013 - Leaves turning yellow on weeping willow planted in May. What causes this and how can I fix it? Mother's Day gift after SANDY uprooted huge tree.
view the full question and answer

Plants Toxic to Horses
October 26, 2013 - I want to put planters on the front of my horse barn, which is also in the front field, so the horses could eat what is in it if they want to. I am looking to put a miniature pine tree in the planter....
view the full question and answer

Smarty Plants's Facebook profile Support the Wildflower Center by Donating Online or Becoming a Member today.

Mr. Smarty Plants wants you to be his Facebook friend. Click the Facebook icon to add yourself to Mr. Smarty Plants list of friends.
E-NEWSLETTER | BECOME A MEMBER | DONATE NOW | MEDIA | SITEMAP | STAFF
© 2015 Lady Bird Johnson Wildflower Center