Normally grown as a houseplant, nerve plant (Fittonia spp. ) is a spreading evergreen with delicately veined, deep-green leaves. Although the most popular vein color is silvery-white, you can also readily find varieties with veins in pink, white, and green. Nerve plant is a low-growing creeper that is a perfect fit for terrariums or bottle gardens. In USDA hardiness zone 11, nerve plant is sometimes grown as a creeping ground-cover in filtered sun locations. Fittonia typically grows to a height of 3 to 6 in. with a trailing spread of 12 to 18 in. Although the plant rarely flowers when grown as an indoor houseplant, it does occasionally bloom with insignificant reddish or yellowish-white spikes. As beautiful as it is, Fittonia is somewhat temperamental and tricky to grow as a houseplant. It requires very high, constant humidity, such as found in a terrarium and cannot tolerate stagnant conditions. Nerve plant is also sensitive to strong, direct sunlight and will quickly suffer from leaf burn. Fittonia nerve plant likes well drained moist soil, but not too wet. Water moderately and let growing nerve plants dry out between waterings. Use room temperature water on the plant to avoid shock.