Also known as Shameplant, Shy Grass and Touch-me-not, the 'sensitive plant', Mimosa pudica is a source of fascination to adults and children alike. When you gently touch the narrow fern-like leaflets they almost instantaneously fold together and the leaf stalk droops. This sometimes sets off a chain reaction, with several leaf stalks falling on top of one another, causing the collapse of a whole section of foliage, or perhaps the whole plant. When left to its own devices, the plant gradually returns to normal, this taking up to about 10 minutes to half an hour. At night, the leaves will also fold and bend in movements known as nyctonastic movements (reaction to absence of light). A truly magical plant well suited for Fairy Gardens . 4-6" tall.