// SPECIES PROFILE · ANNUAL · NATIVE

Robert geranium

Geranium robertianum ssp. robertianum

Robert geranium (Geranium robertianum ssp. robertianum) is a annual in the — family. Native range includes MO — verified against the Lady Bird Johnson Wildflower Center native distribution database. Hardy in zones 2a–11a. Mature size 6"–2'. Blooms May–Oct.

// QUICK FACTS

Family: —
Group: annual
Native range: Native to 22 U.S. states, including CA, CT, IL, IN, MA, MD…
USDA hardiness: Zones 2a–11a
Mature size: 6"–2'
Sun: —
Water: —
Bloom: May–Oct
Wildlife value: Pollinator and wildlife support
Ecological role: native species profile

Robert geranium (Geranium robertianum ssp. robertianum) — *Geranium robertianum ssp. robertianum* — Robert geranium. Photo via iNaturalist — (c) Gilles San Martin, some rights reserved (CC BY-SA), uploaded by Gilles San Martin.

Field Notes

[ growing · ecology · siting · care ]

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, robert geranium pairs naturally with: Black-Eyed Susan (Rudbeckia hirta), Common Sunflower (Helianthus annuus), Swamp verbena (Verbena hastata), Slim amaranth (Amaranthus hybridus).