Grey Star Calathea
Calathea setosa 'Grey Star'
Grey Star
About this plant
Calathea setosa 'Grey Star' is a striking houseplant known for its beautiful, elongated leaves with silvery-grey patterns and dark green edges. It is prized for its decorative foliage and ability to brighten indoor spaces. This plant is part of the prayer plant family and can fold its leaves at night.
Taxonomy
- Genus
- Calathea
- Family
- Marantaceae
- Higher classification
- Order Zingiberales
- Plant type
- Houseplant
- Lifespan
- Perennial
Origin & Distribution
- Native region
- Brazil, South America
- Distribution
- Widely cultivated indoors worldwide; native to tropical regions of South America.
Care
- Light preference
- Bright indirect
- Suitable locations
- Indoor, Balcony, Greenhouse
- Preferred window facing
- North-facing, East-facing, Northeast-facing, Northwest-facing
- Watering frequency
- Moderate
- Watering interval
- 3–7 days
- Humidity
- High
- Minimum
- 16 °C
- Maximum
- 30 °C
- Optimal
- 18-26 °C
- USDA hardiness zones
- 10-12
- Soil pH
- 5.5-6.5
- Soil type
- well-draining potting soil rich in organic matter
Watering. Keep soil consistently moist but not soggy. Water when the top inch of soil feels dry. Use room-temperature, filtered water if possible to avoid leaf spotting.
Fertilizing. Feed monthly during the growing season (spring and summer) with a balanced, diluted liquid fertilizer. Avoid fertilizing in winter when growth slows down.
Calathea setosa 'Grey Star' prefers indirect light and high humidity. It needs regular watering but should not sit in water to avoid root rot. It can be sensitive to dry air and low temperatures, so maintaining a warm and humid environment helps it thrive.
Propagation
- Propagation methods
- Division
- Care difficulty
- Medium
Ornamental features
- Flowering
- No
Attractive silvery-grey patterned leaves with dark green margins; foliage is the main decorative feature.
Toxicity & Safety
- Toxic to humans
- Non-toxic
- Toxic to pets
- Non-toxic
- Weed potential
- Not considered a weed
Non-toxic to humans and pets, making it safe for households with children and animals.
Allergy information
- Allergy risk
- Low
- Allergy triggers
- Sap or latex, Skin contact
- Pollen level
- None
Calathea setosa 'Grey Star' is generally safe for people with allergies. It does not produce airborne pollen that causes reactions. However, some individuals may be sensitive to the plant's sap or leaf surfaces, so it's best to handle with care if you have sensitive skin.
Common problems
Common problems include leaf browning or curling due to low humidity or inconsistent watering. Overwatering can cause root rot, and low light may reduce leaf vibrancy. Spider mites and fungal issues can occur if air circulation is poor.
Uses
Primarily grown as an ornamental houseplant for its attractive foliage and air-purifying qualities.
Notes
Prune any damaged leaves to encourage healthy growth. Repot every 1-2 years in fresh soil to maintain vigor. Avoid cold drafts and sudden temperature changes.