It is the plant equivalent of the Star Trek tribbles.

Hehe. Kind of like these things my mom calls 'fire
bushes'. The first year she bought one, she planted
in a corner by her porch. Very pretty, got fiery red
in the fall. It was killed by frost and she whacked
it off and took it to be burned. The next spring, she
had a line of little fire bushes all along the path
she walked when carrying it to brush pile.

She hasn't had to buy another since. She waits until
spring, transplants a few to where she wants them and
pulls the rest.

Tracey