Rent Shop Volunteer Join

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

Please forgive us, but Mr. Smarty Plants has been overwhelmed by a flood of mail and must take a break for awhile to catch up. We hope to be accepting new questions again soon. Thank you!

Need help with plant identification, visit the plant identification page.

 
rate this answer
Not Yet Rated

Wednesday - June 09, 2010

From: Rockwall, TX
Region: Southwest
Topic: Compost and Mulch, Diseases and Disorders, Transplants, Trees
Title: Browning leaves on recently planted chinkapin oak in Rockwall TX
Answered by: Barbara Medford

QUESTION:

I just planted a chinkapin oak that is about 1 1\2 inches thick last week and now some of the leaves are turning brown. Does that mean its dying? Do you have any tips that I could use to protect it?

ANSWER:

We have a feeling it is suffering from transplant shock. We recommend planting woody plants, like trees and shrubs, in Fall or late Winter, while they are still semi-dormant, and less susceptible to damage. While there is not much you can do about it now, like unplant and do over, read this website from About.com: Landscaping on Transplanting Trees and Shrubs, to help you next time you want to plant a tree.

According to the USDA Plant Profile, Quercus muehlenbergii (chinkapin oak) does grow in and around Dallas County. It prefers alkaline soil which is rocky and sandy. There are both sandy and clay soils around your area of North Central Texas. If you have clay soil, you might be having problems with the kind of drainage the oak needs. Ordinarily, we would recommend that you stick a hose down in the dirt around the tree roots and let it slowly dribble in, to help compensate for it having been planted in hot weather. However, if your soil is clay, that could just make the problem worse. You might try it once, let the water run until it is on the surface. Then, if it takes more than half an hour to drain, it is not draining correctly. You will need to go to a practice of trying to work some compost into the area around the roots, and mulching the surface with shredded bark mulch to help protect the roots. That has the added benefit that, as the mulch decomposes, it will add to the composting effect in the soil, and help even more with the drainage. 

Finally, treating it as transplant shock, trim off about 1/4 to 1/3 of the upper part of the tree. You are pretty well out of the Oak Wilt danger area in Texas; usually, we would not recommend trimming an oak before about June 15, but the chinkapin oak is a white oak, and not very vulnerable to Oak Wilt. Trimming off that upper portion will help the roots get water up to the remaining leaves, in order for those leaves to continue manufacturing food for the whole plant. Make sure the soil stays moist but not soggy, and next time you plant a tree, wait until late Fall to do it.

From our Native Plant Image Gallery:


Quercus muehlenbergii

Quercus muehlenbergii

Quercus muehlenbergii

Quercus muehlenbergii

 

 

 

More Diseases and Disorders Questions

Time for trimming oaks from Boerne TX
July 03, 2012 - I want to trim a native red oak but am scared to touch it because I dont want to lose it. It is the primary source of shade in our back yard. Also I want to trim the live oaks and am surrounded with O...
view the full question and answer

Juniper as host of cedar-apple rust
July 17, 2007 - Thanks for the helpful advice on the Eastern Red Cedar. I was wondering if you could ease my mind about a potential problem. I have read up on some of the native plants in my area in a very good book ...
view the full question and answer

Treating scarred Gum Bumelia from Lampasas TX
June 05, 2013 - We have a very old Gum Bumelia with a scarred open tree trunk. In the past concrete was used to fill the scarred trunk. What is the acceptable method of helping the tree. More concrete or using blac...
view the full question and answer

Problems with red tip photinia in San Antonio
March 29, 2009 - I have a red tip photinia that's about 20 years old and about 20 feet high--it is big! I noticed last summer the highest leaves looked droopy all the time even with deep watering and now that portion...
view the full question and answer

Tip Dieback on Lonicera sempervirens
August 14, 2013 - I have a Lonicera sempervirens (coral honeysuckle) vine in Virginia which does well early in the season, but then around July, the very tips of its shoots (just the last 1-2 inches) wither, turn black...
view the full question and answer

Support the Wildflower Center by Donating Online or Becoming a Member today.