Field ManualAll plants

Water avens
Geum rivale
Pet & Human Safety
People: No hazard foundPets: Not on the ASPCA lists as we read them
Neither ASPCA nor NC State lists a pet-safety verdict for this plant. Not listed means no verdict was found, not that it's safe. Keep pets from eating it and call a vet or the ASPCA Poison Control line if a pet seems unwell.
PlotAndPetal cannot tell you whether a plant you found can be eaten. Only someone who can see the plant can identify it.
Poison control
If someone has collapsed, cannot be woken, is having a seizure or has trouble breathing, call 911 now. For any other possible poisoning, call Poison Help: 1-800-222-1222.
Emergency number source: U.S. federal law (47 U.S.C. § 251(e)(3)), read 2026-10-07.
Naturalist Lore
Historical Background & Breeding Lore
The history of this plant and its name, and how it was bred, where we have them.
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- Hardiness zones
USDA zones 3 to 7 (Chicago Botanic Garden, an archived page last updated before February 2022).
- Light
Full sun to partial shade (Chicago Botanic Garden); dappled shade is best but it tolerates full sun if the soil stays moderately moist (Memorial University Botanical Garden, for woodland avens).
- Water needs
high
- Mature size
18 to 28 inches tall (Chicago Botanic Garden).
- Where it comes from
Native to both North America and Eurasia; in New York found in wetlands, especially calcium-rich ones (Finger Lakes Native Plant Society). Europe and North America populations differ (Memorial University Botanical Garden).
How to prepare the soil, when and what to feed, and how and when to prune where that applies.
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Botanical Anatomy & Characteristics
How the flowers and leaves are built and which pollinators visit, where we have them.
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Field Doctor
What can go wrong with this plant and what to do about it, where we have them.
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Vintage Plates
Old botanical drawings from public libraries are in the app, for plants where we have them.
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