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Hydrophyllum canadense

An eastern North American native perennial forb in the Hydrophyllaceae that forms large colonies via scaly rhizomes, has basal deeply lobed leaves, and bears compact clusters of white to lavender bell-shaped flowers beneath the leaf canopy.

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Common Names

Broad-Leaf Waterleaf, Canada Waterleaf, Blunt-Leaf Waterleaf, Mapleleaf Waterleaf, Waterleaf

Summary

Hydrophyllum canadense, commonly called bluntleaf waterleaf, is a rhizomatous perennial native to eastern North America, forming colonies via long, scaly rhizomes and growing about 30–70 cm tall, basal leaves are lobed with silvery mottling, stem leaves are palmately lobed (5–9 lobes), flowers are white to lavender, bell-shaped, in clusters beneath the upper leaves, with long hairy filaments giving a lace-like appearance, it tolerates partial sun to deep shade and thrives in moist, humus-rich soils of moist forests and understories, it functions as a shade groundcover in woodland or naturalized settings, spreading via rhizomes to form colonies, propagation occurs by seed, which requires three months of cold stratification to germinate, or by division in spring or autumn, flowers attract native bees, making it a pollinator-friendly addition to shade gardens while enhancing biodiversity

Lifecycle

Perennial

Height

10 inches-2.5 feet

Spread

0.5-2.5 feet

Hardiness Zones

Zones 4-8

Sunlight Requirements

Ideally partial shade; also tolerates partial sun and full shade.

Soil Type

Moist, humus-rich soil

Soil Drainage

Moist soils (wet to moderately moist)

Soil pH

6.0-8.0, Neutral to alkaline soils, Tolerates alkaline conditions above 8.0

Bloom Color

White

Bloom Time

Spring, Summer, and Fall

Foliage Color

Green

Fall Foliage Color

Purple

Leaf Lifecycle

Deciduous

Growth Rate

20–70 cm per year

Seasons of Interest

Spring, Summer, Fall, and Winter

Propagation Methods

Seeds and Division

Attracts Wildlife

Attracts bees (including native bees and bumblebees), Waterleaf Mining Bee, wasps, flies, butterflies, and skippers

Taxonomy

Taxonomic Rank
Species
Author
L.
Publication
Syst. Nat. ed. 10 , 2: 919 (1759)

Superior Taxa

Kingdom
Plantae
Subkingdom
Pteridobiotina
Phylum
Angiosperms
Order
Boraginales
Family
Boraginaceae
Genus
Hydrophyllum

Synonyms

Hydrophyllum acerifolium Hydrophyllum lobatum

References

Broad-leaved Waterleaf (Hydrophyllum canadense) - …. ontariowildflowers.com.
Hydrophyllum canadense - Wikipedia. en.wikipedia.org.
Hydrophyllum canadense (Mapleleaf Waterleaf) - FSU…. fsus.ncbg.unc.edu.
Hydrophyllum canadense (blunt-leaved waterleaf) - …. gobotany.nativeplanttrust.org.
Bluntleaf waterleaf » HF&G - Cleveland Botanical G…. holdenfg.org.
Atlantic Herbaria - Hydrophyllum canadense. midatlanticherbaria.org.
Hydrophyllum canadense. newyork.plantatlas.usf.edu.
Hydrophyllum canadense L. GRIN-Global. npgsweb.ars-grin.gov.
Hydrophyllum canadense John's Cabbage, Bluntleaf w…. pfaf.org.
Hydrophyllum canadense L. - GRIN-Global-CA. pgrc-rpc.agr.gc.ca.
Hydrophyllum canadense (Bluntleaf Waterleaf, Broad…. plants.ces.ncsu.edu.
USDA Plants Database. plants.sc.egov.usda.gov.
CNH Portal - Hydrophyllum canadense. portal.neherbaria.org.
Hydrophyllum canadense L. | Plants of the World On…. powo.science.kew.org.
How to Propagate Hydrophyllum canadense. propagate.one.
Hydrophyllum canadense | /RHS. rhs.org.uk.
Hydrophyllum canadense. species.wikimedia.org.
Hydrophyllum canadense / Species Page / Plant Atla…. tennessee-kentucky.plantatlas.usf.edu.
Hydrophyllum canadense - Canada waterleaf - Amanda…. amandasnativeplants.com.
Blunt-leaf Waterleaf (Hydrophyllum canadense) | U.…. fws.gov.
Broad Waterleaf | Mass.gov. mass.gov.
Hydrophyllum canadense page - Missouri Plants. missouriplants.com.
[PDF] Hydrophyllum canadense | NJ.gov. nj.gov.
Canadian Waterleaf - Flora of Pennsylvania. paenflowered.org.
World Flora Online. worldfloraonline.org. June 2024.