// SPECIES PROFILE · PERENNIAL · NATIVE

Giant coneflower

Rudbeckia maxima

Giant coneflower (Rudbeckia maxima) is a perennial in the — family. Native range includes AR, OK. Hardy in zones 6a–10a. Mature size 38"–8'. Blooms Jul–Sep.

// QUICK FACTS

Family: —
Group: perennial
Native range: Native to AR, LA, OK, SC, TX
USDA hardiness: Zones 6a–10a
Mature size: 38"–8'
Sun: Part shade
Water: High · moisture-loving
Bloom: Jul–Sep
Wildlife value: Pollinator and wildlife support
Ecological role: native species profile

Giant coneflower (Rudbeckia maxima) — *Rudbeckia maxima* — Giant coneflower. Photo by Eric Hunt via Wikimedia Commons (CC BY-SA 4.0).

Field Notes

[ growing · ecology · siting · care ]

Giant coneflower (Rudbeckia maxima) is a perennial in the — family. Native range includes AR, OK. Hardy in zones 6a–10a. Mature size 38"–8'. Blooms Jul–Sep.

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, giant coneflower pairs naturally with: American Lotus (Nelumbo lutea), Broadleaf Arrowhead (Sagittaria latifolia), Blue-Eyed Grass (Sisyrinchium angustifolium), Butterfly Milkweed (Asclepias tuberosa).