Host an Event Volunteer Join Tickets

Your gift keeps resources like this database thriving!

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?

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 - March 02, 2016

From: INDIO, CA
Region: California
Topic: Pruning, Poisonous Plants, Shrubs
Title: Should flower stems of Texas mountain laurel be removed after they bloom?
Answered by: Guy Thompson

QUESTION:

Should I trim off the old flower stems from this years bloom on a Texas Mountain Laurel?

ANSWER:

Here is how a similar question to Mr. Smarty Plants was answered:

We would recommend removing the spent flower stems from Sophora secundiflora (Texas mountain laurel) when the pods first begin to appear. If you follow the plant link above, you will note this sentence in the first paragraph on our webpage on the plant:

"The brilliant, lacquer red seeds were valued by indigenous people for ornament and ceremonial use; they contain the highly poisonous alkaloid cytisine (or sophorine), a substance related to nicotine and widely cited as a narcotic and hallucinogen."

Since the seeds are very attractive, there is always the chance of a child, or perhaps a pet, finding one and taking a taste. 

Removing the forming seed pods also saves the energy that the plant would otherwise devote to the process of seed pod maturation.  The saved energy will be available for slightly increased vegetative growth.

 

More Shrubs Questions

Blue rug juniper native to New Hampshire
March 29, 2009 - Is the blue rug juniper native to New Hampshire? I'm considering it for ground cover near lake in zip 03872.
view the full question and answer

Managing a wet area in Austin
November 18, 2013 - I suspect that my backyard lies at the very top of a creek watershed. However, all of the water flowing through it gets blocked by a solid stone wall. Whenever we get a significant rain event, part ...
view the full question and answer

Converting a Texas backyard to grow Xerophytic native plants
January 09, 2015 - I am planning the conversion of our backyard, about 4000 sq ft of largely St Augustine, into a grassless landscape of hardscaping and native plants. I’ve been an avid gardener of rock garden plants i...
view the full question and answer

Problems with Silverado Sage in Pearland, TX.
July 28, 2012 - Hi, We have three Silverado Sage bushes we planted last year. They did great during the drought. However, this winter they had a severed leaf drop of mostly just the centers of them. These cente...
view the full question and answer

Non-native Sago Palm from Bulverde TX
June 12, 2012 - My husband's job has taken him out of state and he left me in charge of his 27 year old sago palms, (house plants, sort of bonsai). They waited until he left and then quite perversely sprouted 3 foo...
view the full question and answer

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