En EspaŅol

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
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 - March 21, 2012

From: Austin, TX
Region: Southwest
Topic: Plant Identification, Trees
Title: Identity of flowering yellow trees in Austin
Answered by: Nan Hampton

QUESTION:

There are numerous flowering yellow trees in my Austin neighborhood. Are they mesquite or goldenball lead trees? They are quite fragrant, like a new bar of soap.

ANSWER:

The trees you are seeing are probably Acacia farnesiana (Huisache).  It is possible that Leucaena retusa (Goldenball leadtree) is blooming, but they generally don't bloom until April.  This, however, has been an unusual year because of the very mild winter—many plants are blooming earlier than they normally do.  The flowers of the two look similar, but those of the goldenball lead tree tend to be about 2 cm. in diameter; while those of huisache are closer to 1 cm. in diameter.  The blooms of both trees are fragrant.  The huisache has thorns and the goldenball lead tree does not.  Prosopis glandulosa (Honey mesquite) is also blooming now but its flowers are a paler shade of yellow and have a different shape.  The leaves of all three trees are similar.

 

From the Image Gallery


Huisache
Acacia farnesiana

Huisache
Acacia farnesiana

Huisache
Acacia farnesiana

Huisache
Acacia farnesiana

Goldenball leadtree
Leucaena retusa

Goldenball leadtree
Leucaena retusa

Goldenball leadtree
Leucaena retusa

Goldenball leadtree
Leucaena retusa

Honey mesquite
Prosopis glandulosa

Honey mesquite
Prosopis glandulosa

Honey mesquite
Prosopis glandulosa

More Plant Identification Questions

Identification of vine with green flowers
May 23, 2012 - Trying to identify a vine with 5-petaled ~1 cm dia green flowers (w/ barely perceptible white & black speckles). I have 3 photos I can send (showing flowers & leaves). The flower petals are almost...
view the full question and answer

Mimosa pudica or \
July 02, 2007 - I don't have a picture of a flower but I'm looking for a flower that I was told was called earthquake flower. It blooms at night. Could you help me?
view the full question and answer

Natural location of Ceanothus impressus in California
May 21, 2006 - Where is Ceanothus impressus 'victoria' native? I need as specific as you can. Thanks much.
view the full question and answer

Plant identification
July 28, 2012 - I have a plant that looks like a suculent tree with a canopy like an umbrella. It grows every summer & is no more than 5 ft tall. It has tiny spines on it's trunk, which has white spots on it. the en...
view the full question and answer

Possible identification of native white buddlejas in Austin
July 18, 2007 - I am desperately trying to identify a plant. It looks perennial, is in full sun, is about 7 ft. tall, bloomed white blossoms (similar in form to buddleia) in June, which have now changed from rose-co...
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.
E-NEWSLETTER | BECOME A MEMBER | DONATE NOW | MEDIA | SITEMAP | STAFF
© 2015 Lady Bird Johnson Wildflower Center