Why Do Fittonia (Nerve Plant) Leaves Curl?

Fittonia is a relative newcomer in the herb garden scene. This tropical perennial has large, fleshy leaves that curl at the edges. What causes this fascinating shape change? Fittonia grows from seeds or cuttings taken from mother plants, and they prefer warm temperatures. They don’t tolerate frost, and their foliage only lasts from spring through …

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