Rent Shop Volunteer Join

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 - 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
Vachellia farnesiana

Huisache
Vachellia farnesiana

Huisache
Vachellia farnesiana

Huisache
Vachellia 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 Trees Questions

Fertilizing Newly Planted Trees
February 07, 2016 - Back in November, I planted 20 trees on rocky, caliche slopes around my house outside of Utopia, Texas. The trees were 45 gallon Monterrey Oaks and Texas Redbuds. I have also installed a drip irriga...
view the full question and answer

Can a Texas Mountain Laurel be grown in Drake CO
August 22, 2010 - I live in Colorado, in the mountains near Estes Park, and would like to plant the Texas Mountain Laurel. Can they be grown in this environment. I would be willing to grow them in containers so I could...
view the full question and answer

Time to transplant shade tree seedlings from San Antonio
September 28, 2013 - What month do you transplant shade tree seedlings in San Antonio, TX<
view the full question and answer

Privacy screen for Sedona AZ
August 02, 2013 - I live In Sedona Az. A builder just built a house next to my house and the new house is ugly to look at. What plant or tree would grow fast and reach 18 foot in height fast. It can be about 5 to 6 foo...
view the full question and answer

Planting fruit and nut trees in Archer, FL.
January 26, 2012 - We're looking to plant a few fruit and nut trees in Archer, Florida. We've been thinking about figs, apples, peaches, oranges, plums, and whatever nuts grow best here (looks like almonds and pecan...
view the full question and answer

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