Water Arum vs Early Blue Violet - TreeTime.ca

Water Arum vs Early Blue Violet

Calla palustris

Viola adunca

CUSTOM GROW

NOT AVAILABLE THIS SEASON - MIGHT RETURN

Water Arum
Early Blue Violet

Water Arum is a native perennial wetland plant known for its showy white oval sheaths (spathe) that surround a yellow-green, cylindrical flower spike (spadix). It has large, oblong, heart-shaped leaves on stems that rise above the water from shallow, spreading rhizomes. The blossoms are followed in late summer by tiny, pear-shaped fruits that ripen to bright red, adding ornamental interest to wet habitats.

Water Arum provides food for birds and small mammals that eat its berries, and its flowers attract pollinators. It can tolerate cold climates and forms colonies in shallow water and saturated soils. It is well-suited for ecological restoration, riparian planting, naturalisation, and habitat projects in wet and shaded environments.

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.

Water Arum Quick Facts

Early Blue Violet Quick Facts

Zone: 1b
Zone: 2a
Height: 0.2 m (0.8 ft)
Height: 0.1 m (0.3 ft)
Spread: 0.2 m (0.8 ft)
Spread: 0.2 m (0.5 ft)
Light: shade, partial shade
Light: partial shade, full sun
Moisture: wet
Moisture: dry, normal
Growth rate: medium
Growth rate: fast
Life span: short
Life span: short
Growth form: colony-forming
Growth form: low growing, clump-forming
Spreading: rhizomes - medium, seeds - low
Spreading: seeds - medium, rhizomes - medium
Maintenance: medium

Toxicity: toxic if ingested

Toxicity: rhizomes, fruit, seed poisonous to humans
Flowers: white sheath around and yellow spike
Flowers: purple to blue-violet
Bloom time: spring to summer
Bloom time: mid spring to early summer
Berries: red, in clusters
Hybrid: no
Hybrid: no
Catkins: no
Catkins: no


Native to: AB, BC, SK, MB, ON, QC, NS, NB, NL, YT, NT, PE
Native to: AB, BC, SK, MB, ON, QC, NS, NB, YT, NT
Other Names: bog arum, swamp lily, wild calla, wild dragon
Other Names: dog violet, hookedspur violet, sand violet, western blue violet