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

Wednesday - April 04, 2007

From: Austin, TX
Region: Southwest
Topic: Trees
Title: Spring blooming Acacia farnsiana in Austin
Answered by: Jimmy Mills

QUESTION:

I've been seeing a large shrub, possibly tree, around Austin this spring - and it is covered is small ball-like orangish-yellow blooms - very tightly covered in these blooms. From the car, it looks sort of like a retama type form, but smaller leafed and a tighter, thicker growth habit. Is it somethingi native or an invasive species. I've seen it at the hike and bike trail and just around town.

ANSWER:

The plant you are seeing is Huisache Acacia farnesiana (sweet acacia), a member of the pea family (Fabaceae) which is distributed in the US across the contiguous southern states from Florida to California, and into Mexico. It is described as a tree/ shrub growing to 15-20 feet.

The Retama, Parkinsonia aculeata (Jerusalem thorn), that you mention is also a member of the pea family with yellow flowers, but as you can see from the pictures, the structure of the flowers and stems is different.

 

From the Image Gallery


Huisache
Acacia farnesiana

Huisache
Acacia farnesiana

Retama
Parkinsonia aculeata

More Trees Questions

Need suggestions for plants for a privacy screen for a pecan orchard in Chappell Hill, TX.
September 21, 2011 - Mr. Smarty Plants, My family has just begun converting our land in Chappell Hill, TX (Washington County) into a pecan orchard. We had to clear a lot of the overgrowth around the edge of the proper...
view the full question and answer

Trees for privacy screen
August 08, 2012 - Hello, We'd like to plant a privacy screen to hide our view of an adjacent apartment complex. Ideally the trees or other plantings might be a native species, and preferably they would eventually rea...
view the full question and answer

Fan-Tex ash tree roots a problem near house foundation from Bryan TX
February 23, 2013 - DO I need to worry about Fan TX roots being a problem near house foundations?
view the full question and answer

What is the pH of Bald Cypress needles?
February 24, 2010 - What is the pH of Bald Cypress needles?
view the full question and answer

Killing regrowing shoots of a downed hackberry tree
June 28, 2013 - Hackberry plants won't die. You and others have suggested to cut the suckers or saplings to get rid of them. Over the years I have continued to cut the same saplings and the only thing I have now ar...
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 | SITEMAP | STAFF
© 2016 Lady Bird Johnson Wildflower Center