Red-Nerved Fittonia

bright indirect light (3-6 feet from a south or west window, or right next to an east window. Under a grow light, 6-10 inches away works well) near an east- or west-facing window. It burns easily in direct sun (right in the window where sun actually hits the leaves. A strong grow light 4-6 inches away can substitute) and tolerates shade better than most houseplants - true to its forest-floor origins. A north-facing window with supplemental grow lighting also works well.

high humidity (60-80%. Group your plants together, set them on a pebble tray with water, or run a humidifier nearby) is non-negotiable - aim for 60-80% relative humidity. Use a pebble tray, group with other plants, or grow in a terrarium. This is an excellent terrarium plant precisely because the enclosed environment maintains the moisture it needs.

Peat-based or coco coir potting mix with added perlite for drainage. Target a slightly acidic pH around 6.5. Shallow roots mean a wide, shallow pot works better than a deep one.

Spider mites and mealybugs are the most common pests, particularly in dry conditions. Low humidity causes leaf shriveling. Overwatering causes yellowing and root rot. Pinch off any flower spikes that appear - they're insignificant and drain the plant's energy.