I caught a great story on NPR recently about Seattle's dilemma with invasive blackberries. Seems Seattleites (yes, thats what they are called--I looked it up) love to pick the blackberries, but the sprawling, thorny bushes are also big invasive problem that have to be controlled. Here's a good story from the Seattle Times: Black velvet bliss — and major thorn: blackberry a double-edged fruit The NPR story is archived as well. Who knew a class C noxious weed could taste so good?