The tickle me plant goes by many names (sensitive plant, humble plant, touch-me-not) but all can agree that Mimosa pudica is a must-have in the home, especially if you have kids. So what kind of plant is a tickle me plant exactly? It’s a shrubby perennial plant native to tropical regions. The plant can be grown outdoors as an annual but is more commonly grown indoors for its unusual growing characteristics. When touched, its fern-like leaves close up and droop as if being tickled. Mimosa plants will also close their leaves at night. Tickle me houseplants have prickly stems and, in summer, produce fluffy pink, bell-shaped flowers. Since the plants are commonly grown around children, the thorns can easily be removed with a nail clipper to prevent any possible injury, though rare.