Himalayan Blackberries: Wicked Brambles

Yes, its fruit is delicious, but this invasive blackberry shrub has an attitude problem.

The cutleaf blackberry (Rubus laciniatus) arrived in North America nearly a century before the Himalayan. Its berries are firmer and easier to transport than those of the native blackberry (Rubus ursinus).
Photo by Dreamstime/Catalina Zaharescu Tiensuu