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 - July 22, 2015

From: Austin, TX
Region: Southwest
Topic: Problem Plants, Trees
Title: Why is my Texas mountain laurel growing so slowly?
Answered by: Guy Thompson

QUESTION:

I have a Mountain Laurel, Anacacho Orchid Tree and Desert Willow on the northern side of our yard - all three get full sun most of the day. The Mountain Laurel is closer to the east side. The other two trees planted in 2012 have doubled in height and are well above 10 feet tall. The mountain laurel looks like it has grown maybe 2 inches. What am I doing wrong? Does it need fertilizer (I haven't amended the soil since planting) or less/more water (weekly sprinkler per water restrictions and occasional hand watering during really hot days). It always has shoots growing from the base - flowered this year for the very first time (had two little purple blooms).

ANSWER:

I'm betting that your slow-growing tree is a Sophora secundiflora (Texas mountain laurel).  if so, relax.  You are probably not doing anything wrong.  TX mountain laurel naturally grows very slowly for the first few years.  Perhaps because it is busy sending a large taproot deep into the soil.  As this web site indicates, there will ultimately be a noticable growth spurt one spring, and the tree will continue growing in subsequent years.  It is well worth waiting for.

 

More Problem Plants Questions

Plant-related skin rashes from Round Rock TX
September 23, 2013 - I have been plagued with persistent skin rashes this summer, and it is happening with plants that have never bothered me before, for example, red yucca. The dermatologist says it is a plant reaction,...
view the full question and answer

Black Walnut tree in LA
March 12, 2012 - I was just given a black walnut tree and am trying to determine where to place it. I’ve read on your site that “Certain plants will not grow under Black Walnut trees because of the juglones that the ...
view the full question and answer

Removal of thistles from Columbus TX
May 20, 2014 - I am sorry if you have an answer in FAQs but I could not find it. We recently cleared property near Columbus Texas of many cedars (ash junipers). This spring we experienced a profusion of thistle -...
view the full question and answer

Eliminating skunk cabbage in Troy, NY
May 19, 2009 - My yard is overgrown with skunk cabbage. My question is how do I get rid of it?
view the full question and answer

Want to identify thorny vines growing in Charlotte Hall, MD
April 25, 2013 - I have vines with thorns growing in my wood, vining around the trees and killing them. It grows and vines go up trees of any height all the way to the top. It has green pointy leaves. If it doesn't...
view the full question and answer

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