Trembling Aspen vs Water Arum - TreeTime.ca

Trembling Aspen vs Water Arum

Calla palustris

Populus tremuloides

CUSTOM GROW

Water Arum
Trembling Aspen

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.

Trembling Aspen is a hardy, fast-growing tree. It is known for its unique "trembling" leaf movement and beautiful bark that whitens with age.

This native shade tree tolerates a range of growing conditions and requires little maintenance.

Water Arum Quick Facts

Trembling Aspen Quick Facts

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Zone: 1b
Zone: 1a
Height: 0.2 m (0.8 ft)
Height: 25 m (82 ft)
Spread: 0.2 m (0.8 ft)
Spread: 9 m (30 ft)
Light: shade, partial shade
Light: full sun
Moisture: wet
Moisture: dry, normal
Growth rate: medium
Growth rate: fast
Life span: short
Life span: short
Growth form: colony-forming
Spreading: rhizomes - medium, seeds - low
Suckering: high
Maintenance: medium

Toxicity: toxic if ingested

Fall colour: brilliant yellow
Flowers: white sheath around and yellow spike
Bloom time: spring to summer
Berries: red, in clusters
Seeds: fluff
Hybrid: no
Hybrid: no
Catkins: no
Catkins: yes


Native to: AB, BC, SK, MB, ON, QC, NS, NB, NL, YT, NT, PE
Native to: AB, BC, SK, MB, ON, QC, NS, NB, NL, YT, NT, NU, PE
Other Names: bog arum, swamp lily, wild calla, wild dragon
Other Names: american aspen, golden aspen, mountain aspen, quaking aspen, quiver leaf aspen, trembling poplar, white poplar