Great Waterleaf
Hydrophyllum appendiculatum
Last reviewed: August 2026
Great Waterleaf is a native woodland wildflower found across the eastern and central United States. This shade-tolerant perennial blooms with white to pale blue flowers in May and June.
Toxicity unknown
Great Waterleaf (Hydrophyllum appendiculatum) is not listed by the ASPCA Animal Poison Control Center (opens in new tab) or the other sources we check, so we have no verdict for it either way. Absence from those lists is not a clearance. If your pet shows symptoms after eating any plant, call the ASPCA at (888) 426-4435.
Light
part shade
Water
medium
Size
12"–24" H × 8"–16" W
Bloom
May, Jun
Native to
AL, AR, IA, IL and 14 more states
Pollinators
bees, butterflies
Before you buy
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Great waterleaf is a native woodland wildflower with broad, deeply lobed leaves and clusters of small white to pale purple flowers in late spring. This woodland perennial grows in spreading clumps and goes dormant by midsummer, disappearing completely until the following spring.
Growing Great Waterleaf
Grow Great Waterleaf in part shade and medium water. Mature plants reach 12 to 24 inches tall and spread 8 to 16 inches wide. Expect low maintenance to keep it looking intentional in a front yard.
In an HOA neighborhood
Great Waterleaf takes more care to keep looking intentional in a front yard. Maintenance level: low. Consider it for backyard or mid-zone beds rather than the street edge.
Works well in: backyard only.
- Appears very wild and weedy
- Dies back completely in winter leaving bare spots
- Unfamiliar appearance may be seen as unmaintained
Wildlife value
The flowers attract native bees and butterflies during its May-June bloom period. The plant also serves as a host for some native moth caterpillars.
Common questions
- Where does Great Waterleaf naturally grow?
- Great Waterleaf is native to eastern and central United States, including states from Alabama north to Minnesota and from Pennsylvania west to Kansas.
- When does Hydrophyllum appendiculatum bloom?
- Great Waterleaf typically blooms in May and June, producing clusters of white to pale blue flowers.
- What pollinators visit Great Waterleaf?
- Great Waterleaf attracts various bees and butterflies with its nectar-rich flowers during the late spring blooming period.
- What growing conditions does Great Waterleaf prefer?
- This woodland wildflower thrives in partial to full shade with medium to moist soil conditions, making it ideal for naturalized woodland gardens.
- Is Great Waterleaf HOA-friendly?
- Great Waterleaf takes more care to look intentional in a front yard. Consider it for backyard or mid-zone beds rather than the street edge.
These answers were drafted with an AI model from this plant's data. Verify care details with a local expert.
Native range data from vouchered herbarium specimen records and regional native plant society lists. Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.
Ready to grow Great Waterleaf? Add it to your garden in Pollinator Patch to track it and get season-by-season care guidance.
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