En Español

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

Large ash tree with round white spot on bark
July 21, 2008 - I have a large ash tree that seems to be fairly healthy. However, it has a large round white spot (about 18" diameter) on the bark, about 3' up from the base. Within the solid white circle the bark ...
view the full question and answer

Live oak trees with rusty spots and holes on tree trunks
September 21, 2011 - I have live oak trees that have developed rusty spots, small holes on the tree trunks and sawdust on the trees base. They were planted in Oct 2010. We have had a hot dry summer in Texas this year an...
view the full question and answer

Possibility of symbiotic relationship between cedar elm and ashe juniper
November 14, 2006 - Is there a symbiotic relationship between cedar elm and ashe juniper? We have a small ashe juniper sapling and a small cedar elm sapling growing near each other (actually, we planted the juniper 2 yea...
view the full question and answer

Positioning a bald cypress among cattails in Silver Spring MD
April 30, 2009 - We have a rain garden, half of which is fairly overrun with broad- and narrow-leaf cattails. We've learned to be aggressive in thinning these out 2 to 3 times during the growing season. We also have ...
view the full question and answer

Source for trees from Burnet TX
August 19, 2012 - I am desperately searching the central Texas area for Pistacia Mexicana male and female trees to buy. I would like about four, maybe more. I live in the Killeen-Lampasas area and have been to seve...
view the full question and answer

Support the Wildflower Center by Donating Online or Becoming a Member today.
E-NEWSLETTER | BECOME A MEMBER | DONATE NOW | MEDIA | JOBS | SITEMAP | STAFF INTRANET
© 2016 Lady Bird Johnson Wildflower Center