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Thorny weed identification

Posted by RV86 N.E. Pennsylvania 5b (My Page) on
Fri, Jun 10, 11 at 14:36

I have a large patch of weeds growing and spreading rapidly in a cleared patch of woods near my garden. The weeds have thorns and are very nasty if they get attached to your clothing! The older stems are red and woody and have five flat sides. The largest ones are around 4 feet tall. Any idea what they are? Best way to get rid of them? Thanks in advance for advice! Below are some pictures...










Follow-Up Postings:

RE: Thorny weed identification

  • Posted by hortster 6A southcentral KS (My Page) on
    Fri, Jun 10, 11 at 16:48

Looks like a blackberry (Rubus sp.) thicket. Not sure about eradication technique other than herbicide since it spreads by suckers from the roots and would come back up from any stray roots left in the ground. If left unchecked, blackberries can get away from you!

RE: Thorny weed identification

Digging is the most effective. Then check during successive years to get the seedling & re-sprouts from missed roots.

RE: Thorny weed identification

Looks like Himalayan Blackberry, Rubus armeniacus. Extremely invasive in many states. Your local(county/state)noxious weed control board can give you info on how to best control it in your area(mechanical methods, spray schedules, etc).

RE: Thorny weed identification

Keep in mind that spraying herbicides, plant poisons, is harmful to our environment and has been shown to cause genetic mutations in lower order creatures that may indicate problems for us. What is the reason for the genetic changes in us humans since these products have seen greater use since the 1950's?

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