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 Trees Questions

Apples, pears and geraniums in Kipling, Saskatchewan
March 30, 2013 - My geranium's leaves became yellow - Why? Where can I buy a good nice apple tree? Will apples and pears grow in south Saskatchewan?
view the full question and answer

Trophy tree for Spicewood, Texas
September 30, 2008 - I want to plant a trophy Mesquite at the bottom of the hill, in Spicewood. I'm told that it may not flourish, because of the soil in my area. If that is the case, what would be a striking tree as a...
view the full question and answer

Evergreen for inland San Diego, California
November 28, 2009 - I'm looking for an evergreen tree for my inland San Diego residence, 30 foot max height, growth speed is not important. I had decided on the carrotwood until I found your site and discovered the prob...
view the full question and answer

Planting under Walnut Trees in Harrisville, MI.
July 22, 2009 - I have 2 50+ yr old Black Walnut trees in Northern Michigan (zone 4). I am planting a new bed (raised of course) and was considering adding a hydrangea. I am curious if this will thrive due to the jug...
view the full question and answer

Annuals victims of allelopathy under a hackberry tree in Franklin TN
August 03, 2009 - In our new home's back yard we have a 30' hackberry tree that's less than 20' from our house, on the NW side. I planted your typical shade annuals, impatiens, etc., in the mulch bed under the tre...
view the full question and answer

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