Guide
How to Care for African Violets
The short answer
African violets need bright light without direct afternoon sun — Clemson Extension suggests placing them within 3 feet of a large south-, east-, or west-facing window, or growing them under two 40-watt fluorescent tubes for 15–18 hours a day. Water with warm water only when the top of the soil is dry: cold water creates white spots and ring patterns on leaves, and overwatering is the most common killer, causing crown and root rot.
If your African violet will not bloom, insufficient light is the primary culprit — the giveaway is thin, dark green leaves on long stalks. Move it closer to bright, indirect light or add artificial light, and flowers usually follow.
What an African Violet Is
African violets (Streptocarpus sect. Saintpaulia) are compact, fuzzy-leaved rosette plants that can flower nearly year-round indoors under the right light. They rebloom easily in the home when located properly, watered regularly, and occasionally fertilized.
Light
Give bright light with no direct afternoon sun: within about 3 feet of a large south-, east-, or west-facing window works, as does a bright north-facing window. Under artificial lights, run two 40-watt tubes 6–12 inches above the plants for 15–18 hours per day. Plants need a daily dark period to flower well.
Watering
Water when just the top of the soil is dry, before the plant wilts. Use warm water only and keep it off the leaves — cold water causes white spots and yellow or white ring and line patterns on the foliage.
Bottom watering avoids splashing: set the container in a tray with about an inch of water and remove it once the soil surface is moist.
⚠ Overwatering is the most common African violet problem and leads to crown and root rot. Never leave the pot standing in water.
Soil, Pot, and Feeding
Use a well-draining mix — equal parts soil, peat, and horticultural-grade perlite, or a commercial African violet mix — in a pot with drainage holes. Feed with a water-soluble fertilizer formulated for African violets; yellowing lower leaves and slowed growth signal nutrient need. Water the soil before fertilizing.
Temperature
African violets grow best at about 65–70°F at night and up to 80–85°F during the day.
Propagation by Leaf Cuttings
- 1Take a healthy leaf — Cut a firm, mature leaf with its stalk from the parent plant.
- 2Optionally dip in rooting hormone — Penn State Extension notes dipping the leaf end in rooting hormone speeds new root development.
- 3Root in water or media — Insert the stalk in water or a moist propagation mix and keep it in a warm, humid spot with bright, indirect light until plantlets form.
Why It Won't Bloom, and Other Problems
- No flowers: inadequate light is the primary cause — thin, dark green leaves on long stalks confirm it
- Spots and ring patterns on leaves: cold water on the foliage — use warm water and keep leaves dry
- Crown/root rot: overwatering
- Crinkled, tight centers: cyclamen mites; also watch for mealybugs — pests spread easily between plants
Sources
Reviewed 2026-07-18. We cite university Extension, government, and established horticultural sources — and never invent pesticide rates or dangerous treatments.
- Clemson University HGIC — African Violet — Light placement (within 3 ft of bright windows, 2×40W tubes 15–18 hr), warm-water-only watering and cold-water leaf spotting, bottom watering method, soil/peat/perlite mix, 65–70°F night / 80–85°F day, insufficient light as primary no-bloom cause, cyclamen mites and mealybugs
- Penn State Extension — Propagating Houseplants — Leaf-cutting propagation: rooting hormone speeds root development; keep cuttings in a warm, humid location with bright, indirect light