Fittonia argyroneura or mosaic plant is a native to the tropics. While this plant does produce little yellow blooms in the wild, you will never see it produce blooms as a houseplant. Instead, what makes this plant a beautiful addition to your houseplant collection comes from the leaves. The foliage of this plant comes in three varieties, depending on type. The base color of the leaves is an olive green while the veins can be white, red or pink.
*Please note the plant in the picture is not a mosaic plant. The purpose of the picture is solely for the terrarium.
The keep to growing this plant as a houseplant is to mimic its natural environment. The easiest way to do that is to use it in a terrarium, which will create a humidity rich environment. While this plant can tolerate a lot of different light conditions, when planted in a terrarium you will need to place it in an area that receives indirect sunlight. If you notice that your leaves are becoming all green, you will need to expose the plant to more sunlight so that the vein color begins to appear again.
When it comes to additional care, you will need to put the plant in a warm location. Watering the plant can also cause an issue. With the plant being in a terrarium, you will not need to water but maybe once or twice during the year. When you do though, make sure the water is neither hot nor cold. Both of these extremes will shock the plant.
Yes, this plant will need fertilizing during the growing season (spring through summer). A fertilizer especially designed for tropical plants is all you need.
To keep your mosaic plant looking its best, periodically pinch back the plant. This will encourage the plant to produce side shoots and a more bushy appearance.
As easy to grow as the mosaic plant is there are times when it can develop problems. The first set of problems comes from overwatering. This includes root rot, and Xanthomonas leaf spot. Both of these will cause the leaves to die. Other problems that you may face come from plant pests. This includes aphids, mealybugs, and thrips. If the infestation is small, you can try to treat the problem with an organic insecticidal soap. On the other hand, if there are large numbers of these pests it is better to dispose of the plant. Also, since these plant pests are mobile make sure to check your other houseplants for these pests and treat immediately.