// SPECIES PROFILE · ANNUAL · NATIVE

Great waterleaf

Hydrophyllum appendiculatum

Great waterleaf (Hydrophyllum appendiculatum) is a annual in the — family. Native range includes AR, KS, MO. Hardy in zones 2b–9a. Mature size 6"–2'.

// QUICK FACTS

Family: —
Group: annual
Native range: Native to 17 U.S. states, including AL, AR, IA, IL, IN, KS…
USDA hardiness: Zones 2b–9a
Mature size: 6"–2'
Sun: Part shade
Water: —
Bloom: —
Wildlife value: Pollinator and wildlife support
Ecological role: native species profile

Great waterleaf (Hydrophyllum appendiculatum) — *Hydrophyllum appendiculatum* — Great waterleaf. Photo by Mason Brock (Masebrock) via Wikimedia Commons (Public domain).

Field Notes

[ growing · ecology · siting · care ]

Great waterleaf (Hydrophyllum appendiculatum) is a annual in the — family. Native range includes AR, KS, MO. Hardy in zones 2b–9a. Mature size 6"–2'.

Why it's on this list: native species profile. Native-range data from the Lady Bird Johnson Wildflower Center (NPIN), cross-checked against iNaturalist observations. Part of Rooted Revival's regional native plant catalog — true natives for Oklahoma, Arkansas, Missouri and Kansas.

Companion Planting

[ guild · polyculture · cross-layer pairings ]

In the same native range, great waterleaf pairs naturally with: Black-Eyed Susan (Rudbeckia hirta), Common Sunflower (Helianthus annuus), Plains Coreopsis (Coreopsis tinctoria), Tall Thistle (Cirsium altissimum).