Rent Shop Volunteer Join

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

Friday - March 07, 2008

From: Austin, TX
Region: Southwest
Topic: Diseases and Disorders, Trees
Title: Mountain laurel (Sophora secundiflora) refuses to bloom
Answered by: Nan Hampton

QUESTION:

We have a Texas Mountain Laurel that gets full sunlight, but does not bloom. It is 4-5 ft tall & 3-4 ft wide & healthy. Is there anything we can do to make it bloom next year?

ANSWER:

It sounds like everything should be ideal for your Sophora secundiflora (Texas mountain-laurel) to bloom. However, Mr. SP has one question? Are you fertilizing it? If you are, don't do it! Here is a quote from a previous question about native plants failing to bloom:

"The problem with flowering shrubs that are not flowering, native or not, is often too little sunshine or too much lawn fertilizer. Obviously, if you have it in full sun in Austin, that is not the problem. Lawn fertilizer, which possibly is being spread a little farther than the lawn, is high in nitrogen for green leaves (or blades) of grass. A plant you wish to flower but give too much nitrogen will get lazy and fail to bloom. A plant has just one goal in life and that is to reproduce itself. To make seed, it must make flowers, but if it doesn't feel just a little bit insecure about its future, it won't expend the considerable energy to create the flowers."

In general, native plants do not need to be fertilized—one of the many advantages for planting native.


Sophora secundiflora

 

 

More Trees Questions

Spots on persimmon tree leaves from Dripping Springs TX
July 10, 2013 - We are in rural Hays County Texas off Hamilton Pool Rd Texas. Large persimmon trees are turning yellow, blackish spots on underside of leaves. What do we do?
view the full question and answer

A suggestion for a native small tree for San Diego
September 23, 2010 - Another good suggestion for a native small tree for San Diego - Garrya veatchii - Southern Silktassle. It's really gorgeous!
view the full question and answer

Mexican Sycamore trees grown from seed
November 15, 2011 - If someone is selling an alleged Mexican Sycamore grown from a seed harvested from a mature tree growing in Austin, is it likely to be a TRUE Mexican Sycamore -- or has it most likely been pollinated ...
view the full question and answer

Preventing Oak Galls
February 22, 2016 - How do you prevent live oak galls? Do you have a solution? Many of our live oaks are infested with them.
view the full question and answer

Due to drought is pruning live oaks beneficial from Houston
December 07, 2011 - 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.
view the full question and answer

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