...weed, weedy species, registered, regulated AND confusing. I see & hear these terms used & I know sometimes they are used wrongly. Is there anyone with a good background in this area who could give me (& this forum) some clear definitions. The "Problem Plants for Dummies guide". Should I go round my garden & rip-up my Vinca minor, yard-out the Yellow Flag in my pond, hack down my Holly Tree, roundup my Aquelegias, level the Laurel & torch the Himalayan Balsam my neighbour insists on leaving in the corner of her yard despite my nagging, not to mention the English Ivy that creeps in from....Ok, I'm ranting. Seriously, a informed precis & some perspective would be appreciated. gb. Fraser Valley BC.