From:PACIFICA, CA Region: California Topic: Invasive Plants Title: Control of Acacia escaping cultivation in California Answered by: Damon Waitt
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.
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
Non-native invasive Siebold viburnum from Isleboro ME June 17, 2012 - I was given several small Siebold Viburnum for planting on my Maine property. Even though it is often for sale in nurseries, I'm aware it is listed as invasive in several eastern states. Shouldn't I... view the full question and answer
Controlling Phragmites australis, common reed July 04, 2008 - Dear Mr. Smarty Plants,
I volunteer at Cedar Ridge Preserve in Dallas. We are currently chopping down an invasive called Phragmites australis around the pond. The belief is that by continuously cho... view the full question and answer
Can bastard cabbage be eaten from Austin May 02, 2013 - On a local cooking show they were talking about cooking local foods and mentioned bastard cabbage but never showed how to cook it or if it was in fact edible. Would be a way to help get rid of it if ... view the full question and answer
Snails in the ice plants in California May 31, 2011 - Ice plants and snails. Every morning when I go outside I see at least 20 or more snails. Is there a certain way that I should have planted them that would have prevented them from destroying my plant?... view the full question and answer
Use of kudzu in landscaping April 11, 2008 - HELLO MR.SMARTY PlANTS,my question is , I need a # of kudzu plants to grow quickly for a huge bare back wall since we are selling our house & have zero anything back there.we are getting comments that... view the full question and answer