Water Eryngo
Eryngium aquaticum
Last reviewed: June 2026
Light
part sun
Water
high
Size
12"–48" H × 12"–24" W
Bloom
Jul, Aug, Sep
Native to
DE, FL, GA, MD and 7 more states
Pollinators
bees, butterflies, beetles
Water eryngo is a native perennial wildflower that produces distinctive spiky, steel-blue flower heads on tall stems. It thrives in moist to wet conditions and blooms from mid-summer through early fall. The plant forms clumps and can naturalize in suitable wet areas.
In an HOA neighborhood
Water Eryngo takes more care to keep looking intentional in a front yard. Maintenance level: moderate. Consider it for backyard or mid-zone beds rather than the street edge.
Works well in: backyard only.
- Appears very wild and weedy to most homeowners
- Requires consistently moist soil which may look unkempt
- Dies back completely in winter leaving bare spots
Wildlife value
The unique flowers attract a variety of pollinators including native bees, butterflies, and beetles. Seeds provide food for birds in late fall and winter.
Native range data from the USDA PLANTS Database and regional native plant society lists. Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.
Does Water Eryngo fit your yard? Open it in Pollinator Patch to check it against your sun, soil, and HOA-conscious filters.