How to Grow and Care for Nerve Plant (Mosaic Plant)

a fittonia in a multicolored planter

The Spruce / Alonda Baird

Normally grown as a potted houseplant, nerve plant (Fittonia spp.) is a spreading evergreen perennial with delicately veined, deep-green leaves. Although the most popular vein color is silvery-white, you can also readily find varieties with veins in red, pink, white, and green. Nerve plant is a low-growing creeper that is a perfect fit for terrariums or bottle gardens. Fittonia typically grows to a height of 3 to 6 inches with a trailing spread of 12 to 18 inches. Although the slow-growing plant rarely flowers when grown as an indoor houseplant, it does occasionally bloom with insignificant reddish or yellowish-white spikes. In USDA hardiness zone 11, the nerve plant is sometimes grown as a creeping ground cover in filtered sun locations.

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.

Common Names Nerve plant, mosaic plant, fittonia, painted net leaf
Botanical Name Fittonia albivenis
Family Acanthaceae
Plant Type Evergreen, herbaceous perennial
Mature Size 3–6 in. tall, 12-18 in. spread
Sun Exposure Filtered indirect sun, part shade
Soil Type Moist but well-drained
Soil pH Slightly acidic (6.5)
Bloom Time July to August
Flower Color Yellowish-white, reddish
Hardiness Zones 11, USDA
Native Area South America
3:09

Watch Now: Everything You Need to Know About the Nerve Plant

Nerve Plant Care

When grown indoors, pot a nerve plant in a peaty commercial potting mix. The plant needs to be kept constantly moist with a high level of ambient humidity provided by frequent misting or by growing it in a tray filled with pebbles and water. 

Ideally, most growers find it's easiest to grow these lovely but temperamental plants in terrariums or covered gardens where they can get the high humidity and diffuse light they love so much. They also do well in steamy bathrooms.

a fittonia plant
The Spruce / Alonda Baird
closeup of a fittonia plant
The Spruce / Alonda Baird

Light

As a tropical plant that naturally grows in the humid, bright shade of tropical forests, this plant prefers similar conditions when grown as a houseplant. It dislikes full sunlight, preferring bright, indirect sun, such as that offered by north-facing windows. It will also thrive under fluorescent lights.

Soil

Fittonia grows well in standard potting soil with a peat moss base. The soil should retain some moisture but should also drain well.

Water

Keeping the plant appropriately moist can be a challenge. Nerve plant is prone to collapse if it's allowed to dry out. Although it will recover quickly if thoroughly watered, repeated fainting spells will eventually take their toll on the plant. At the other extreme, Fittonia plants that are allowed to stagnate in water will develop yellowed, limp leaves. 

Temperature and Humidity

Nerve plant thrives at temperatures around 70 F but will tolerate a range from the low 60s F to low 80s F. These plants prefer humid conditions similar to those found in rainforests. Regular misting will keep the plants from drying out. In arid climates or during the dry months of winter, using a room humidifier may be helpful. Terrariums or bottle gardens are naturally moist environments well suited to the plant.

Fertilizer

During its growing season, feed plants weekly with a weak dose of liquid fertilizer formulated for tropical plants. A balanced 5-5-5 fertilizer diluted to half strength is a good formulation. 

Types of Nerve Plant

  • 'Argyroneura': boasts deep-green leaves with silver-white veins
  • 'Pearcei': has deep-green leaves and reddish veins
  • 'Frankie': shows more light pink than green on its leaves
  • 'Fortissimo': has green foliage and red and pink veins
  • 'Red Star': boast bright and cheery pink-red veined leaves

Pruning

Nerve plant grows quickly in the right conditions, and if the stems grow leggy, pinching off the tips will keep the growth full and bushy. Because the flowers are insignificant and boring, pinching off the buds will also help keep the foliage full.

Propagating Nerve Plant

Nerve plants propagate readily from leaf-tip cuttings, taken in late spring or early summer, at the same time you repot the plant. (Taking leaf cuttings are the best way to propagate nerve plant; planting its seeds isn't as effective.)

  1. Using clean, sharp garden shears, make leaf cuttings at an angle. Make sure to include at least two growing nodes on the cutting to obtain the best results.
  2. Once you've potted up the cutting in a peat-based soil mix, you can expect roots to sprout within two to three weeks.
  3. Use of a rooting hormone is not usually necessary, but if your conditions are less than ideal (too dry or too cool), rooting hormone might increase your chances of success.

Potting and Repotting Nerve Plant

Any conventional potting soil mix and standard houseplant pot with bottom drainage holes will work for Fittonia. Repot annually in spring or early summer, always using fresh potting soil to prevent soil compaction and waterlogging.

Common Pests

Insect problems include fungus gnats, mealy bugs, or aphids. Infestations should be treated immediately—an insecticidal oil, like neem oil, works really well—and keep affected plants isolated to prevent the bugs from spreading to other indoor plants.

Common Problems with Nerve Plant

Nerve plant is pretty easy to care for, so many of the problems associated with Fittonia are the same ones that can affect other tropical houseplants: 

Leaves Turning Yellow 

When leaves turn yellow it's the result of too much water. Use a pot with drainage holes to prevent soggy soil.

Plant Leaves Falling Off

Leaf drop is usually the result of cold temperatures or drafts. Try to mimic the tropical conditions where this species naturally grows. 

Dry, Shriveled Leaves 

This usually indicates that the plants are not receiving enough humidity, or are receiving too much direct sun. Use a room humidifier in winter when humidity levels can drop significantly. Keep your nerve plant out of direct sunlight.

FAQ
  • Are nerve plants easy to care for?

    Nerve plants can be temperamental, since they need loads of humidity and a tropical climate. Keep yours over 70 F, away from drafts, and mist often. Soil should always be moist.

  • Can nerve plant grow indoors?

    Yes! Unless you live in zone 11 or higher, your nerve plant must be grown indoors.

  • How fast do nerve plants grow?

    Grown indoors (unless you're in zone 11), nerve plants are slow-growing.

Article Sources
The Spruce uses only high-quality sources, including peer-reviewed studies, to support the facts within our articles. Read our editorial process to learn more about how we fact-check and keep our content accurate, reliable, and trustworthy.
  1. Fittonia albivenis (Verschaffeltii Group)Missouri Botanical Garden.

  2. How Not to Kill Your Houseplant: Survival Tips for the Horticulturally Challenged Peerless, Veronica. How Not to Kill Your Houseplant: Survival Tips for the Horticulturally Challenged. Penguin Random House. 2017.

  3. Fittonia Production Guide. Mid-Florida Research and Information Center, University of Florida.