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PlantSnap
Plant Care
Fireweed
(Epilobium angustifolium)
Also Known As
Fireweed, Rosebay willowherb, Chamerion angustifolium, Willowherb
About This Plant
Epilobium angustifolium, commonly known as fireweed, is a perennial herbaceous plant that is native to the temperate regions of the Northern Hemisphere. The plant is characterized by its tall, slender stem, which can grow up to 2 meters (6.5 feet) in height, and its showy pink to purple flowers that bloom in the summer.
Plant Care Instructions
Outdoor Size Range
Height: 4-6 feet (1.2-1.8 meters), Spread: 2-3 feet (0.6-0.9 meters)
Light Requirements
Fireweed prefers full sun to partial shade. It can tolerate some shade, but flowering may be reduced.
Humidity Needs
Fireweed does not have any specific humidity requirements.
Fertilizing Schedule
Fireweed does not require fertilizer, but can benefit from a light application of balanced fertilizer in the spring.
Pruning Guidelines
Fireweed does not require pruning, but deadheading spent flowers can encourage more blooms.
Common Pests and Diseases
Fireweed is relatively pest and disease-free, but can be affected by aphids and powdery mildew.
Indoor Size Range
Not suitable for indoor growth
Watering Schedule
Fireweed prefers moist soil, but can tolerate dry conditions once established. Water regularly during the growing season, and reduce watering in the fall to help the plant prepare for winter.
Temperature Range
Fireweed can tolerate a wide range of temperatures, from -40°F (-40°C) to 90°F (32°C).
Growing Season
Fireweed blooms in the summer, from June to September.
Growing Difficulty Level
Fireweed is an easy plant to grow, and is tolerant of a wide range of growing conditions.
USDA Hardiness Zones
Fireweed is hardy in USDA zones 2-9.
Did You Know?
Fireweed is often one of the first plants to grow in areas that have been disturbed by fire, which is how it got its common name.
