Nitrogen fixing groundcover plant.

Mimosa Pudica is a creeping annual or perennial herb often grown for its curiosity value: the compound leaves fold inward and droop when touched or shaken, due to evolution from predators, re-opening minutes later.

http://en.wikipedia.org/wiki/Mimosa_pudica

Normally grown indoors as an annual in cooler climates. A fun plant to grow that children love.

NOT EDIBLE