Explore Plants

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
    
 

Can't find the answer in our existing FAQs, submit a question to Mr. Smarty Plants.
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

More Trees Questions

Correction of tree name from Bay Point CA
October 16, 2013 - The tree should of been Mulberry don't know how it was changed!! Tuesday - October 15, 2013 From: Bay Point, CA Region: California Topic: Non-Natives, Cacti and Succulents, Trees Title: Non-...
view the full question and answer

Galls on live oak trees in Austin, TX
April 14, 2005 - I am a resident of a condominium complex in Austin that has numerous Live Oak trees. Can you explain what the gall type things are hanging from the trees at this time of year and all over the grounds?...
view the full question and answer

Leaves on new water oak turning brown from Matagorda TX
May 30, 2013 - We had water oaks planted in January when they had no leaves. Leaves came on but are now turning brown.
view the full question and answer

Webbing on the bark of a hackberry tree.
October 03, 2007 - Dear Mr. Smarty Plants. We have a large hackberry tree in our back yard that has what appears to be extensive spider webbing covering large areas of the bark at the trunk . . and extending well up th...
view the full question and answer

Native Shrubs to Plant with Viburnum in New Jersey
February 11, 2014 - Please provide me with a list of native shrubs, plants etc. for New Jersey that would work with my existing native viburnum.
view the full question and answer

Smarty Plants's Facebook profile Support the Wildflower Center by Donating Online or Becoming a Member today.

Mr. Smarty Plants wants you to be his Facebook friend. Click the Facebook icon to add yourself to Mr. Smarty Plants list of friends.