So what kind of plant is a touch me not 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. This unique sensitivity and ability to move has fascinated people since early times, and kids are especially fond of the plant. Not only are they fascinating, but attractive too. Touch me not houseplants have prickly stems and, in summer, produce fluffy pink, ball-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.