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

Controlling sedge in vegetable garden in Mississippi
August 03, 2008 - I have a veg. garden surrounded by Purple Sedge. The nut grass has been contained/eliminated by replacing all dirt 1' down. Now the surrounding sedge is beginning to creep inward infesting the gard...
view the full question and answer

How to get rid of devils club (Oplopanax horridus)
November 22, 2007 - please tell me how to get rid of devils club!!!
view the full question and answer

White evening primrose from Baton Rouge LA
April 16, 2013 - My husband and I have a disagreement about Mexican Primroses. I believe I have seen patches of them which are pure white. He believes they must be faded pink ones. Do white ones occasionally grow? ...
view the full question and answer

Plant ID from Woodcreek TX
January 27, 2012 - I would like to attach a photo of a weed in my lawn and have you identify it. How do I send a photo? I have been told it may be ground ivy. Please tell me how to kill it without damaging the lawn.
view the full question and answer

Poverty Weed in Wimberley, Texas
September 20, 2008 - I have seen differing reports about the native plant, Baccharis neglecta or Poverty Weed. Some reports say it is invasive and others consider it an acceptable native plant. I have quite a few Povert...
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