UACES Facebook Mimosa


March 2014

Question There are mimosa and privet trees coming up all over my yard, in the flower beds! I've been trying to get rid of them for several years now, to no avail. I cut them down, and they just grow right back, bigger and with more trunks than before. Is there something I can paint on the stumps that will kill them? Or is there some other way to get rid of them once and for all?  

Answer Have you considered moving?! While that may be easier, with perseverance and patience you can take control, but it takes time.  If there is any way to dig out the roots that will help, but they will still send up sprouts. Chances are also good that there is privet in other areas in your community which flower and then set seeds, which the birds eat and drop, resulting in more privet.  Pruning, weed-eating any plants you see, treating the cut area with Round-up or Brush-b-gone (be sure to read label directions and ONLY apply where you don’t have desirable plants that could be damaged) can all help.  Late summer through fall is a better time to kill woody perennials, because they tend to be storing reserves for the winter, and will move the chemicals downward better then too.  But total kill is rarely attained in one season.  Good luck! 


(Sept 2011)

QuestionYear before last I had a beautiful bed of hosta. It was in the shade of a large persimmon tree. We had a storm and had to cut the persimmon tree down, that left the hosta bed in the sun. The hosta bed is on the south side of my house. I have planted a mimosa tree in place of the persimmon tree. The mimosa is doing well, except for one problem. It has one very tall branch and one short one close to the bottom of the tree. Do I need to cut the top out of the Mimosa or will it finally branch on its own?


AnswerYou are probably going to have to provide some assistance. Prune it to a strong bud and it should branch out. Do so in late February to early April to catch the resurgence of new growth next spring. I know that many folks like mimosas, but they are not my favorite tree. They tend to be fairly weak and are susceptible to a wilt disease which causes an early death. Probably more information than you wanted since it is already planted in your yard. Watch your trees growth each year and gradually train it into the shape and size you desire. Wherever you prune, you should encourage branching. It may take a few years to get the desired shape.

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