Fittonia, the nerve plant, is a small trailing houseplant whose oval leaves carry a fine net of veins in white, pink, or red over deep green. The pattern rewards a close look, which is why it stars in terrariums, dish gardens, and small pots on a desk or windowsill.

Give it bright, indirect light and keep the soil evenly moist, letting just the surface dry between waterings. It loves humidity — a terrarium, bathroom window, or pebble tray keeps the leaves plump. It telegraphs thirst by wilting, then perks back up quickly after a drink.