Panicle Hydrangea vs Water Arum - TreeTime.ca

Panicle Hydrangea vs Water Arum

Hydrangea paniculata

Calla palustris

CUSTOM GROW

CUSTOM GROW

Panicle Hydrangea
Water Arum

Panicle Hydrangea is a large, broad-leaf, deciduous shrub that is prized for its ornamental appeal. It is easy to care for, long-lived, and cold-hardy.

Depending on the variety, its flowers change color throughout the blooming period. Make sure you water Panicle Hydrangeas regularly to achieve the most notable color change.

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.

Panicle Hydrangea Quick Facts

Water Arum Quick Facts

Zone: 3a
Zone: 1b
Height: 6 m (20 ft)
Height: 0.2 m (0.8 ft)
Spread: 3 m (10 ft)
Spread: 0.2 m (0.8 ft)
Light: partial shade, full sun
Light: shade, partial shade
Moisture: normal
Moisture: wet
Growth rate: fast
Growth rate: medium
Life span: short
Life span: short
Growth form: colony-forming
Spreading: rhizomes - medium, seeds - low
Suckering: medium


Toxicity: toxic if ingested
Flowers: white, strong scent, very showy
Flowers: white sheath around and yellow spike
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, NL, YT, NT, PE
Other Names: white panicle hydrangea
Other Names: bog arum, swamp lily, wild calla, wild dragon