En EspaŅol
Share

Ask Mr. Smarty Plants

Mr. Smarty Plants - Live oak roots and house foundation in Austin

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
Not Yet Rated

Sunday - March 01, 2009

From: Austin, TX
Region: Southwest
Topic: Trees
Title: Live oak roots and house foundation in Austin
Answered by: Barbara Medford

QUESTION:

Our builder left a live oak on our lot that is 7' from our foundation. The tree is now around 18' tall with a 20" circumference. Will this tree eventually cause damage to our foundation and is there some way to prune a live oak to make the tree grow away from our roof?

ANSWER:

While it is certainly true that tree roots can grow up to three times the spread of a tree, the problem in foundations, especially in our very dry climate, is soil subsidence. The tree root does its part on this by looking for water and sucking it up, but the very dry soil is probably going to drop and shrink anyway, and that is much more likely to cause the foundation damage then the tree roots. That having been said, 7' is still pretty close to a house for a tree that will grow as big as a live oak, and not just because of the roots. There is really no way to tell a live oak to grow in another direction, and the branches against your roof can definitely cause problems. Insects, not to mention squirrels and raccoons, consider tree branches against a house as an open invitation to come in, have a bite to eat, and spend the winter. Certainly a trained arborist could prune the branches away from the house, but when you prune a plant, where does the new growth appear? Right, it appears in the area you pruned. And you surely don't want to be pruning now, as the Nitiludid beetle is most active in this area from now until May or June. That pesky bug also considers newly cut or damaged tree trunks or branches as an invitation. And, in that case, this often results in the spread of Oak Wilt disease, which has no known cure but prevention. We can't really recommend one way or the other on removing the tree (we assume you choose the house over the tree?) but you should certainly get the opinion of the aforementioned tree specialist. We would suggest you contact the Texas A&M AgriLIFE Extension Office in Travis County for possible information on this subject, and/or referral to an experienced arborist.
 

More Trees Questions

Source for Texas Olive Tree from Tucson AZ
August 10, 2013 - Can one start a Texas Olive Tree from the olives it produces? How can you start one. I am having difficulty finding a nursery, but do see the trees around.
view the full question and answer

Problems with Mexican Olive tree from Edinburg TX
October 06, 2013 - My Mexican olive (anacahuita) shows no obvious signs of pest or disease, but over the last years has more and more dead limbs and smaller and smaller leaves. It's in a yard with a sprinkler system t...
view the full question and answer

Possible webbing bark lice on oak tree
August 08, 2008 - We live near the Center and have a large live oak tree in our yard. Recently the lower trunk has been covered with thin, white weblike material (not sure if spider web). What could this be and is it d...
view the full question and answer

Landscaping with water garden from Pendleton SC
August 15, 2012 - Searching for native plants in SC. Your results miss some plants listed on your site. I noticed this reading the Mr. Smarty Plants response to "Edible Plants for North GA" We aren't far apart. ...
view the full question and answer

Brown circular ring in trimmed branches of redbud tree
January 22, 2009 - I have a redbud tree that was recently trimed back. When looking at the cross section of the branches, I noticed a brown circular ring. Is this a problem and if so what can I do to correct it?
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
© 2014 Lady Bird Johnson Wildflower Center