Host an Event Volunteer Join Tickets

Support the plant database you love!

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 - December 07, 2011

From: Houston, TX
Region: Southwest
Topic: Pruning, Drought Tolerant, Trees
Title: Due to drought is pruning live oaks beneficial from Houston
Answered by: Barbara Medford

QUESTION:

Would it be beneficial (presuming a continued spring drought) to prune live oak trees more severely than usual this winter? I'm thinking that it might help them to have less mass to support.

ANSWER:

Everyone, it seems, has a different opinion on this, but we will throw our opinion out, too. We probably need to operate on the premise that our rain totals will go down and our heat levels will go up in the near future, and to plan our gardens accordingly.

We usually advise seeking professional help in pruning, especially when the tree is large. Of course, most arborists are likely to advise that the tree surely needs pruning, but we hope that with our guidelines in your mind that you can avoid being talked into something unnecessary, expensive and/or possibly damaging to the tree. Don't get us wrong, most tree specialists are competent and ethical; it's a big job and requires special training and equipment. Just don't let someone who knocks on your door and says "we were just in the area and saw your trees and...." do anything to your trees, probably the most valuable part of your landscaping.

In your area of southeast Texas, it is likely that you have Quercus virginiana (Coastal live oak), although there are a number of oaks growing around there. In Central Texas, where the Lady Bird Johnson Wildflower Center is located. we are more likely to have Quercus fusiformis (Escarpment live oak) but, again, good pruning practices are going to apply.

From the Bartlett Tree Research Laboratories Plant Health Care Program, we found this article on Live Oaks in Texas. Read it all and we will just throw in our comments in addition.

First, and possibly foremost, you must be aware of precautions to take to prevent the attack of Oak Wilt. Live Oaks are the most threatened of all the oaks by it, and there is no cure. While it is not yet the threat in your area that it is in Central Texas, it's out there and prevention of its spread is vital. Please read this website from the Texas Oak Wilt Partnership, in which the Lady Bird Johnson Wildflower Center is an active partner. Please pay attention to their advice on when to prune (December to early February) and pruning paint (paint the stub from the removal of any branch bigger around than your thumb with pruning paint.) Avoid any wounds to the tree any time of the year. Any sap leaking from a wound will attract the nitulidid beetle, which may be carrying the fungus causing Oak Wilt on his body from the last time he had a bite to eat.

 

From the Image Gallery


Coastal live oak
Quercus virginiana

Escarpment live oak
Quercus fusiformis

More Pruning Questions

Blackfoot daisy declining in Austin
September 04, 2010 - My Blackfoot Daisies have grown large, bushy, have bloomed well over the past two summers. Now parts of the plants are drying up, dying. Will pruning out the dead parts help the plants to survive, or ...
view the full question and answer

Pruning practices from Austin
May 16, 2013 - I need to do some pruning in my front beds and I know nothing about plants. From what I have been able to identify I have bicolor irises, plumbago, Japanese Aralia. I don't even know where to begin o...
view the full question and answer

Pruning Pigeonberry
February 06, 2013 - Should pigeonberry be pruned back to the ground this time of year or should a few inches of stem be left? This is my first spring with them in the garden and I've not found any reference material tha...
view the full question and answer

Rejuvenating an old Wax myrtle hedge
February 15, 2016 - I have 8 wax myrtles that were planted about 9 years ago as a screen from our neighbors. They are about 12 feet high. During the past 9 months they are getting thinner and thinner. Two of them hav...
view the full question and answer

Conditions for wisteria bloom on Ontario, Canada
November 05, 2005 - I live in Ontario Canada, and about 4 years ago I bought a shrub which was called wisteria. I loved this bush when I visited a cousin out in British Columbia. The problem is it has no trouble growing ...
view the full question and answer

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