Fireweed vs Bluejoint - TreeTime.ca

Fireweed vs Bluejoint

Calamagrostis canadensis

Chamaenerion angustifolium (Epilobium angustifolium)

CUSTOM GROW

CUSTOM GROW

Bluejoint
Fireweed

Bluejoint is a native perennial grass that forms tall, dense colonies. It is one of the most abundant grasses found in Canada and the United States. The extensive shallow root system and spreading rhizomes help stabilise soils, especially in wet meadows, marshes, and along streambanks.

It is a cool-season grass, growing most actively in spring and fall and slowing during the heat of summer. Seeds from its purple-tinged spikes feed birds and small mammals, and the plant itself provides forage for wildlife and livestock, though it does not tolerate heavy grazing. Its tall, dense growth also offers nesting habitat for wetland birds. With these combined values, Bluejoint is well-suited for naturalisation, riparian plantings, and habitat restoration projects.

Fireweed is a native perennial wildflower known for its tall spikes of bright pink to purple blooms. Its long-lasting summer flowers are an important nectar source for pollinators such as bees, butterflies, and hummingbirds, while its seeds provide food for birds. Its showy, long-lasting display makes it visually striking in naturalized plantings.

Fireweed gets its namesake because it is often one of the first species to return after wildfires, supporting ecosystem recovery. Its wind-dispersed seeds allow it to spread readily, making it highly effective in large-scale restoration, revegetation, and naturalization projects.
Fireweed is the Provincial Flower of the Yukon.

Bluejoint Quick Facts

Fireweed Quick Facts

Zone: 2a
Zone: 1a
Height: 1.2 m (4 ft)
Height: 1.2 m (4 ft)
Spread: 0.3 m (1.0 ft)
Spread: 0.6 m (2.0 ft)
Light: partial shade, full sun
Light: partial shade, full sun
Moisture: normal, wet
Moisture: normal, wet
Growth rate: fast
Growth rate: fast
Life span: medium
Life span: short
Growth form: upright, clump-forming
Growth form: upright, dense, colony-forming
Spreading: rhizomes - high, seeds - high
Spreading: seeds - high, rhizomes - high
Maintenance: medium


Flowers: pink-purple spikes
Bloom time: mid summer to fall
Hybrid: no
Hybrid: no
Catkins: no
Catkins: no


Native to: AB, BC, SK, MB, ON, QC, NS, NB, NL, YT, NT, NU, PE
Native to: AB, BC, SK, MB, ON, QC, NS, NB, NL, YT, NT, NU, PE
Other Names: bluejoint grass, bluejoint reedgrass, canada blue joint, canada reedgrass, marsh reedgrass
Other Names: fire weed, great willowherb, rosebay willowherb, willow herb