Bluejoint vs Early Blue Violet - TreeTime.ca

Bluejoint vs Early Blue Violet

Calamagrostis canadensis

Viola adunca

CUSTOM GROW

NOT AVAILABLE THIS SEASON - MIGHT RETURN

Bluejoint
Early Blue Violet

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.

Early Blue Violet is a low-growing native perennial wildflower valued for its striking early-spring blooms. The flowers range in color from vibrant blue to deep violet, often marked with pale highlights and fine white hairs. They provide an important early nectar source for pollinators and serve as a host plant for several fritillary butterfly species.

It spreads by both seed and rhizomes, gradually forming small colonies. Its dark green, heart-shaped leaves add ornamental appeal, and the plant shows some resistance to deer browsing. Early Blue Violet is well-suited to naturalization projects and pollinator-friendly gardens, and has also been used in coastal butterfly habitat restoration in the Pacific Northwest.

Bluejoint Quick Facts

Early Blue Violet Quick Facts

Zone: 2a
Zone: 2a
Height: 1.2 m (4 ft)
Height: 0.1 m (0.3 ft)
Spread: 0.3 m (1.0 ft)
Spread: 0.2 m (0.5 ft)
Light: partial shade, full sun
Light: partial shade, full sun
Moisture: normal, wet
Moisture: dry, normal
Growth rate: fast
Growth rate: fast
Life span: medium
Life span: short
Growth form: upright, clump-forming
Growth form: low growing, clump-forming
Spreading: rhizomes - high, seeds - high
Spreading: seeds - medium, rhizomes - medium
Maintenance: medium


Toxicity: rhizomes, fruit, seed poisonous to humans
Flowers: purple to blue-violet
Bloom time: mid spring to early summer
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, YT, NT
Other Names: bluejoint grass, bluejoint reedgrass, canada blue joint, canada reedgrass, marsh reedgrass
Other Names: dog violet, hookedspur violet, sand violet, western blue violet