Coleus plants prefer bright, indirect light but can tolerate partial shade. Too much direct sunlight can cause the colors to fade, while too little light can result in leggy growth. A spot with morning sun and afternoon shade is ideal.
Keep the soil consistently moist but not waterlogged. Water the plant when the top inch of soil feels dry. Avoid letting the plant sit in water, as this can lead to root rot. During the growing season, coleus may need more frequent watering.
Use a well-draining potting mix rich in organic matter. Coleus thrives in slightly acidic to neutral soil (pH 6.0-7.0). Adding compost or peat moss to the soil can improve its moisture retention and nutrient content.
Coleus prefers warm temperatures between 60°F and 75°F (15°C to 24°C). It is sensitive to cold and should be protected from temperatures below 50°F (10°C). High humidity levels help the plant thrive, especially in indoor environments.
Feed coleus with a balanced, water-soluble fertilizer every 4-6 weeks during the growing season (spring and summer). Avoid over-fertilizing, as this can lead to excessive leaf growth at the expense of vibrant coloration.
Regularly pinch back the tips of the stems to encourage bushier growth and prevent the plant from becoming leggy. Remove any flower spikes that appear to direct the plant's energy towards foliage production. Repot coleus every 1-2 years to refresh the soil and accommodate growth.