Perennials: DON'T EVEN THINK OF BUYING THIS PLANT!, 1 by Zuzu

Zuzu wrote:
I think Nicotiana are fairly easy to control. I have this problem with Arum (which I didn't even plant) and with some type of violet that chokes everything else unless I pull it out by the wheelbarrow-full.

I agree with Kneff, however, that these plants can be useful in spots where nothing else will grow. I bought some kind of geranium at the flea market a few years ago. The next year I saw the same vendor again and he said he had forgotten to warn me not to let it reseed. Too late! It would cover the whole half-acre if I let it. It is invaluable, however, in dry shade under trees, where nothing else will grow without excessive pampering. Here's a picture of it.