browsing a website, I noticed an attractive plant, Lythrum (loosestrife) that I fancy growing. It seems easy to grow which is the sort of plant I'm after and attractive to bees. Doing a bit of quick research about it, I noticed on American websites that it is recommended not to grow it as it is invasive/aggressive spreader choking out other plants and if you have it in your garden, you should get rid of it. There doesn't seem to be that hysteria on the UK web sites. In fact, val Bourne wrote a lovely article about it on the telegraph web page and the RHS site has it listed with no warnings.
Any thoughts/opinion? Should I grow it or not. I've noticed that U.S. Web sites tend to be very Wary of plants that grow easily-cotoneaster (a certain variety) being one they don't like.