Red Head Coleus - Care Sheet

Overview

Red Head Coleus (scientific name Coleus scutellarioides) is a striking tropical plant known for its vibrant red foliage and upright growth habit. This tender perennial is often grown as an annual in temperate climates due to its sensitivity to cold. It thrives in warm conditions and is valued for its dramatic color that deepens in strong light. Red Head Coleus is moderately easy to care for, making it suitable for gardeners with some experience. It performs well both in garden beds and containers, adding bold color to shaded or partially sunny spots.

Quick Facts

Light

Red Head Coleus thrives in full sun to partial shade. While it can tolerate some direct sun, especially morning sun, its foliage color is brightest and most vibrant when grown in bright, indirect light or part shade. Too much intense afternoon sun can scorch the leaves, while too little light may cause dull colors and leggy growth. For indoor growing, place near a bright window with filtered light.

Water

This coleus prefers consistently moist soil but not waterlogged conditions. Water thoroughly when the top inch of soil feels dry, usually about once a week depending on temperature and pot size. Avoid allowing the soil to dry out completely, as this stresses the plant and dulls leaf color. Good drainage is essential to prevent root rot.

Humidity

Red Head Coleus enjoys moderate to high humidity, typical of its tropical origins. Indoor environments with dry air may benefit from occasional misting or a humidity tray to maintain leaf health and vibrant color. Outdoors, it naturally thrives in humid climates but can adapt to average home humidity levels.

Temperature

Optimal temperatures range from 18–29°C (65–85°F). Red Head Coleus is sensitive to cold and will not survive frost. It should be kept above 10°C (50°F) at all times. In cooler regions, it is best grown as an annual or brought indoors during colder months.

Soil & Potting

Use a well-draining potting mix rich in organic matter. A general-purpose potting soil amended with compost or peat moss works well. The soil should retain moisture without becoming soggy. For container planting, ensure pots have drainage holes to prevent water accumulation.

Feeding

Feed Red Head Coleus regularly during the growing season with a balanced, water-soluble fertilizer diluted to half strength. Alternatively, use a slow-release fertilizer at planting time. Avoid over-fertilizing, which can lead to leggy growth and reduced leaf color intensity.

Repotting

Repot annually or when the plant becomes root-bound. Choose a container one size larger with fresh potting soil to promote healthy growth. Spring is the best time for repotting to allow recovery and vigorous growth during the warm season.

Propagation

Propagation is easiest by stem cuttings. Take 10–15 cm (4–6 inch) cuttings from healthy stems, remove lower leaves, and place in water or moist soil. Roots typically develop within 1–2 weeks. This method preserves the vibrant leaf color and growth habit of the parent plant.

Common Problems

Leaf Scorch

Excessive direct sun or dry conditions cause leaf edges to brown and curl. Move the plant to a location with filtered light and maintain consistent moisture.

Pests: Aphids and Mealybugs

Small sap-sucking insects can cause distorted growth and sticky residue. Treat infestations with insecticidal soap or neem oil, and regularly inspect new plants.

Root Rot

Overwatering or poor drainage leads to root decay and wilting. Ensure pots have drainage holes and allow soil to dry slightly between watering.

Leggy Growth

Insufficient light or lack of pinching causes stretched, weak stems. Provide adequate light and pinch back growing tips to encourage bushier plants.

Flowering Decline

Allowing flowers to bloom can reduce foliage vigor. Pinch off flower spikes to maintain lush leaf growth and color.

Toxicity & Pet Safety

The toxicity of Red Head Coleus to pets is unknown. While coleus species are generally not listed as toxic, some related plants in the Lamiaceae family can cause mild digestive upset if ingested. It is safest to keep this plant out of reach of curious pets and children.

Seasonal Care

Red Head Coleus is a tender perennial best grown outdoors in warm months. In spring, gradually acclimate plants to outdoor conditions. During summer, maintain regular watering and feeding. Before the first frost, bring container plants indoors or treat as annuals in colder zones. Indoor plants benefit from bright light and higher humidity in winter.

Quick Tips

• Provide bright, indirect light for best leaf color.
• Keep soil evenly moist but well-drained.
• Maintain warm temperatures above 10°C (50°F).
• Pinch back stems to promote bushier growth.
• Remove flower spikes to preserve foliage vigor.
• Use stem cuttings for easy propagation.
• Watch for common pests and treat promptly.