Mimosa exhibit fascinating animal like response to stimuli. Fern-like leaves of this plant will fold up when touched then reopen a short time later. A whispering noise accompanies their closing. This folding of leaves after touch or shaking is termed seismonastic movement. Mimosa fold their leaves with night fall opening again with daylight, a phenomena known as nyctinastic movement. Mimosa produce cute, globe-like flower heads clustered with pink/purple flowers. Performs well as a house plant.