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
1 rating

Monday - March 26, 2007

From: PACIFICA, CA
Region: California
Topic: Invasive Plants
Title: Control of Acacia escaping cultivation in California
Answered by: Damon Waitt

QUESTION:

My backyard has been overrun by acacia shrubs. How and what can I do to permanently rid the area of this weed? I hold an agricultural QAL so I have access to herbicides if there are effective ones available beyond RoundUp. I feel the area will need to be power sprayed and naturally I'm concerned about drift so if there is an alternative (like goats?), I'd like to know about it. Thanks in advance for your assistance.

ANSWER:

There are at least 11 Acacia species that occasionally escape cultivation in California. The California Invasive Plant Council has three species of Acacia in its Cal-IPC Invasive Plant Inventory; Acacia dealbata (silver wattle), Acacia melanoxylon (black acacia), and Acacia paradoxa (kangaroothorn). In a backyard situation, Mr. Smarty Plants reccommends using mechanical rather than chemical control. Cut stems just below ground level and hand-pull seedlings before roots are well established. Be aware that cut trees appear resistant to most chemical treatments and often develop new shoots from the crown and possibly roots. Chemicals are most effective during the growing season. Regarding Biological Control (i.e. goats), Mr. Smarty Plants could only find some information about sheep and insects used to control Acacia in Australia. Click here to learn more.
 

More Invasive Plants Questions

Killing a century plant from Burton TX
August 08, 2013 - How do you kill the century plant, they are taking over?
view the full question and answer

Plant ID of invasive vine from Austin
August 21, 2013 - A friend lives in southwest Austin and has a vine that's coming up all over her yard. I am a Williamson County Master Gardener and have asked all the garden gurus in my group what it is from a photo ...
view the full question and answer

Source for non-native, invasive Winter Honeysuckle from Austin
April 24, 2013 - Seeing Lonicera abiflora today reminds me of the "winter honeysuckle" my grandfather grew in San Antonio from 1920s or so through the 1950's. It was a bush with stiff upright stems and bloomed cre...
view the full question and answer

Removal of non-native zoysia grass from Burgettstown PA
September 12, 2013 - What is the most effective method of killing zoysia grass? We bought a house that sits in the center of four acres of mature zoysia. It looks beautiful, however, despite our best efforts at "weeding...
view the full question and answer

Why is Common Horehound missing from NPIN?
March 27, 2014 - Hi there, I am not able to find Marrubium vulgare, i.e. Common or White Horehound, in the Native Plant Database. It grows abundantly on our ranch in Central Texas, and I am attempting to grow i...
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