Coleus ‘Variegated’ is a vibrant and eye-catching plant that can thrive in a terrarium setting with the right care. Here’s a detailed care sheet to help keep your Coleus ‘Variegated’ healthy and thriving:
 
1. Light:
Type: Bright, indirect light.
Duration: 4-6 hours of bright, indirect light daily.
Notes: Avoid direct sunlight, which can scorch the leaves. If natural light is limited, consider using a grow light.
 
2. Temperature:
Range: 65-75°F (18-24°C).
Notes: Coleus prefers a stable temperature. Avoid placing the terrarium near drafts, heaters, or air conditioners.
 
3. Humidity:
Level: High humidity is ideal.
Notes: Coleus thrives in a terrarium because of the naturally high humidity. Ensure good ventilation to prevent mold growth.
 
4. Watering:
Frequency: Keep the soil consistently moist but not soggy.
Method: Water when the top inch of soil feels dry. Reduce watering in the winter when the plant’s growth slows down.
Notes: Ensure good drainage in the terrarium to prevent root rot. If condensation builds up inside the terrarium, periodically open it to allow excess moisture to escape.
 
5. Soil:
Type: Well-draining potting mix.
Notes: A mix designed for tropical plants or a combination of potting soil and perlite works well.
 
6. Fertilization:
Frequency: Monthly during the growing season (spring and summer).
Type: Balanced, water-soluble fertilizer diluted to half strength.
Notes: Avoid over-fertilizing, as this can lead to excessive leaf drop.
 
7. Pruning:
Purpose: To maintain shape and encourage bushier growth.
Method: Pinch back the stems regularly to promote a fuller plant. Remove any dead or yellowing leaves.
 
8. Pests and Problems:
Common Pests: Spider mites, aphids, and whiteflies.
Prevention/Treatment: Inspect leaves regularly. Use insecticidal soap or neem oil if pests are spotted.
Other Issues: Watch for signs of overwatering (yellowing leaves) or underwatering (dry, crispy leaves).
 
9. Propagation:
Method: Stem cuttings.
Procedure: Take 4-6 inch cuttings from healthy stems, remove lower leaves, and place them in water or moist soil. Once roots develop, transplant into the terrarium.
 
10. Additional Tips:
Ventilation: Good airflow is important to prevent fungal issues. Occasionally open the terrarium or provide ventilation.
Container: Ensure the terrarium has adequate drainage or consider using a container with drainage holes to avoid waterlogged soil.
 
By following these care guidelines, your Coleus ‘Variegated’ should thrive and add a splash of color to your terrarium. Enjoy your vibrant, lush plant!