En EspaŅol
Share

Ask Mr. Smarty Plants

Mr. Smarty Plants - Will Texas Mountain Laurel roots damage pipes in Tucson AZ?

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

Thursday - May 20, 2010

From: Tucson, AZ
Region: Southwest
Topic: Transplants, Trees
Title: Will Texas Mountain Laurel roots damage pipes in Tucson AZ?
Answered by: Barbara Medford

QUESTION:

We have a Texas Laurel tree in our back yard,and it is doing fine, and we are are planning to put another one in the front yard close to the house will the root system attack our pipes ? no septic system.

ANSWER:

Do you mean a Texas Mountain Laurel, Sophora secundiflora (Texas mountain-laurel)? We will assume that is the tree you are considering. We were concerned when we discovered that it is not listed as native to Arizona in our Native Plant Database; however, we then found this article by Master Gardeners on a Pima County Cooperative Extension website, Texas Mountain Laurel. You say you already have one in your yard, so obviously they must be able to live in Arizona.

When you inquire about the roots of this tree attacking your pipes, are you referring to sewer pipes or water lines? The Mountain Laurel has a sparse root system but a deep taproot, an adaptation for survival in desert conditions. Once upon a time, when most sewer lines were clay, like the clay pots,  invasive roots did, indeed, break them up and cause major problems. Nowadays, both water and sewer pipes are more often a heavy-duty plastic material, and don't have as much trouble with roots. The mountain laurel is very difficult to successfully transplant because of that taproot-damaging it in transplanting can be fatal to the tree. We would suggest that you first acquaint yourself with the location of the pipes you are concerned about, including the depth they are in the ground.  You did not say if you intended to plant seeds or purchase a tree for transplanting, but it would be a good insurance policy to not dig the hole for the tree directly over those pipes. The resources we searched made no mention of intrusive roots from this tree, just cautioned about the difficult of transplanting the tap root, as well as warning that the tree grows very, very slowly.

From our Native Plant Image Gallery:


Sophora secundiflora

Sophora secundiflora

Sophora secundiflora

Sophora secundiflora

 

 

 

 

More Transplants Questions

Planting Mountain Laurel grown from seeds in Argentina
April 09, 2014 - Hello, I was transferred to Cordoba, Argentina 2 years ago from San Antonio, the climate hereis similar to S. TX, anyway I brought some mountain laurel seeds with me and they have been in 2 gallon pot...
view the full question and answer

Should a tree near a water well be transplanted?
July 31, 2013 - I have a water well and have about a 6 yr live oak planted in close proximity to it( about 10 feet). Would it be wise enough to transplant the tree while its this young or leave it alone. Also I need ...
view the full question and answer

Smarty Plants on mockoranges
May 25, 2005 - I live in Colorado where it is common to have 1 or 2 late frosts. I planted 4 littleleaf mockoranges (Philadelphus Microphyllus) 2 years ago and they are pretty much in full sun most of the day. I h...
view the full question and answer

Best time to plant non-native Crape Myrtle in Fulshear TX
July 01, 2010 - When are the best times to plant Crape Myrtles? My husband and I have just moved to Fulshear, TX (just slightly west of Houston) and being summer, I didn't think this was the best planting period. ...
view the full question and answer

Non-native house plants stressed from Allen TX
July 30, 2011 - I have three house plants that were plants I received from my father's funeral services. They were healthy for about two years and then we added some soil and now they are turning brown and appear t...
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