Water Arum vs Early Blue Violet - TreeTime.ca

Water Arum vs Early Blue Violet

Viola adunca

Calla palustris

NOT AVAILABLE THIS SEASON - MIGHT RETURN

CUSTOM GROW

Early Blue Violet
Water Arum

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 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 Quick Facts

Water Arum Quick Facts

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

Toxicity: rhizomes, fruit, seed poisonous to humans

Toxicity: toxic if ingested
Flowers: purple to blue-violet
Flowers: white sheath around and yellow spike
Bloom time: mid spring to early summer
Bloom time: spring to summer
Berries: red, in clusters
Hybrid: no
Hybrid: no
Catkins: no
Catkins: no


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