Have you tried DE aka Diatomaceous Earth or a soap solution?
For the soap solution:
A quart of warm water, and one teaspoon of dish soap, mix and put in a spray bottle.
Invasive plants are Earth's way of insisting we notice her medicines. Stephen Herrod Buhner
Everyone learns what works by learning what doesn't work. Stephen Herrod Buhner
Can you smell this for me? I think this tiny ad smells like blueberry pie!
grow your own garden and build your own home in the gardening gardeners program