Special Web Offer - Get 50% OFF!
Grab Your Deal Now
PlantSnap
Plant Care
Splitleaf indian paintbrush
(Castilleja rhexiifolia)
Also Known As
Splitleaf indian paintbrush, Rhexiifolia paintbrush, Rhexi-leaved indian paintbrush, California indian paintbrush
About This Plant
Castilleja rhexiifolia is a herbaceous perennial plant species that belongs to the Orobanchaceae family. It is commonly known as the scarlet paintbrush due to its bright red bracts that resemble paintbrushes. The plant is native to North America and is found in the western regions of the United States and Canada.
Plant Care Instructions
Outdoor Size Range
6-18 inches (15-45 cm)
Light Requirements
Scarlet Paintbrush requires full sun to partial shade for optimal growth. It is recommended to place the plant in a location that receives at least 6 hours of sunlight per day.
Humidity Needs
Scarlet Paintbrush can tolerate a wide range of humidity levels, but it prefers moderate humidity. It is recommended to mist the plant occasionally to increase humidity levels.
Fertilizing Schedule
Scarlet Paintbrush does not require frequent fertilization. It is recommended to fertilize the plant once a month during the growing season with a balanced fertilizer.
Pruning Guidelines
The plant does not require frequent pruning. It is recommended to deadhead the spent flowers to encourage new growth and maintain the plant's appearance.
Common Pests and Diseases
Scarlet Paintbrush is relatively pest-free, but it can be susceptible to aphids and spider mites. It is important to monitor the plant regularly and treat any infestations promptly.
Indoor Size Range
Not suitable for indoor growth
Watering Schedule
The plant prefers moist but well-drained soil. It is important to avoid overwatering as it can lead to root rot. Water the plant when the top inch of soil feels dry to the touch.
Temperature Range
The plant can tolerate a wide range of temperatures, but it prefers cooler temperatures between 50-70°F (10-21°C). It is important to protect the plant from extreme heat and frost.
Growing Season
The plant typically blooms from late spring to early summer.
Growing Difficulty Level
Scarlet Paintbrush is moderately difficult to grow as it requires specific growing conditions and can be sensitive to overwatering and extreme temperatures.
USDA Hardiness Zones
Scarlet Paintbrush is hardy in USDA zones 3-9.
Did You Know?
Scarlet Paintbrush is a popular wildflower in North America and is often used in native plant landscaping. The plant is also known for its medicinal properties and has been used by indigenous tribes to treat various ailments.
