Wood Lily vs Water Arum - TreeTime.ca

Wood Lily vs Water Arum

Lilium philadelphicum

Calla palustris

CUSTOM GROW

CUSTOM GROW

Wood Lily
Water Arum

Wood Lily is a native perennial wildflower known for its vibrant, trumpet-shaped blooms in shades of orange to red. Its showy flowers appear mid-summer and are highly visible in meadows and prairies. The upward-facing flowers are an important nectar source for many pollinators, including native bees, butterflies, and hummingbirds.
Unlike most lilies, the Wood Lily’s flowers face upward rather than nodding. It is slow to establish and may take years before flowering, but once mature, it requires little maintenance. It is well-suited for pollinator gardens, naturalisation projects, prairie restoration, and open woodland plantings.
Wood Lily is the provincial flower of Saskatchewan and North America’s most widespread lily. Despite its wide natural range, populations have been declining. Habitat loss, overgrazing by deer, and unsustainable picking have reduced both its abundance and density across many regions. These pressures highlight the importance of protecting and restoring this once-common wildflower.

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.

Wood Lily Quick Facts

Water Arum Quick Facts

Zone: 2b
Zone: 1b
Height: 0.6 m (2.0 ft)
Height: 0.2 m (0.8 ft)
Spread: 0.3 m (1.0 ft)
Spread: 0.2 m (0.8 ft)
Light: partial shade, full sun
Light: shade, partial shade
Moisture: normal, wet
Moisture: wet
Growth rate: medium
Growth rate: medium
Life span: short
Life span: short
Growth form: upright
Growth form: colony-forming
Spreading: seeds - low
Spreading: rhizomes - medium, seeds - low

Toxicity: toxic to cats

Toxicity: toxic if ingested
Flowers: bright orange to red with dark spots
Flowers: white sheath around and yellow spike
Bloom time: early to mid 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
Native to: AB, BC, SK, MB, ON, QC, NS, NB, NL, YT, NT, PE
Other Names: prairie wood lily, red lily, red wood lily
Other Names: bog arum, swamp lily, wild calla, wild dragon