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PlantSnap
Plant Care
Rainbow cactus
(Echinocereus pectinatus)
Also Known As
Rainbow cactus, Pencil cactus, Pectinatus cactus, Hedgehog cactus
About This Plant
Echinocereus pectinatus is a cactus species that is native to the southwestern United States and northern Mexico. It has a cylindrical stem that can grow up to 8 inches (20 cm) tall and 1.5 inches (4 cm) in diameter, with numerous spines and small pink flowers.
Plant Care Instructions
Outdoor Size Range
Height: 4-8 inches (10-20 cm), Width: 2-3 inches (5-8 cm)
Light Requirements
Echinocereus pectinatus prefers full sun, but can tolerate partial shade.
Humidity Needs
This cactus species prefers low humidity levels.
Fertilizing Schedule
Fertilize with a cactus-specific fertilizer once a month during the growing season (spring and summer).
Pruning Guidelines
Prune only to remove dead or damaged parts of the plant.
Common Pests and Diseases
Common pests for Echinocereus pectinatus include mealybugs and spider mites.
Indoor Size Range
Not suitable for indoor growth
Watering Schedule
Water only when the soil is completely dry to the touch. Avoid overwatering as it can lead to root rot.
Temperature Range
Echinocereus pectinatus can tolerate a wide range of temperatures, from 20°F (-6°C) to 100°F (38°C).
Growing Season
The growing season for Echinocereus pectinatus is in the spring and summer.
Growing Difficulty Level
Echinocereus pectinatus is considered to be a relatively easy cactus species to grow.
USDA Hardiness Zones
USDA hardiness zones 8a to 10b.
Did You Know?
The flowers of Echinocereus pectinatus only open for one day, but the plant produces numerous flowers throughout the growing season.
