// SPECIES PROFILE · PERENNIAL · NATIVE

Cup plant

Silphium perfoliatum var. perfoliatum

Cup plant (Silphium perfoliatum var. perfoliatum) is a perennial in the — family. Native range includes AR, KS, MO, OK. Hardy in zones 2b–10a. Mature size 4'–10'. Blooms Jul–Sep.

// QUICK FACTS

Family: —
Group: perennial
Native range: Native to 31 U.S. states, including AL, AR, CT, GA, IA, IL…
USDA hardiness: Zones 2b–10a
Mature size: 4'–10'
Sun: Full sun
Water: —
Bloom: Jul–Sep
Wildlife value: Pollinator and wildlife support
Ecological role: native species profile

Cup plant (Silphium perfoliatum var. perfoliatum) — *Silphium perfoliatum var. perfoliatum* — Cup plant. Photo via iNaturalist — no rights reserved.

Field Notes

[ growing · ecology · siting · care ]

Cup plant (Silphium perfoliatum var. perfoliatum) is a perennial in the — family. Native range includes AR, KS, MO, OK. Hardy in zones 2b–10a. Mature size 4'–10'. 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, cup plant pairs naturally with: Broadleaf Arrowhead (Sagittaria latifolia), Common Blue Violet (Viola sororia), Common Boneset (Eupatorium perfoliatum), Common Evening Primrose (Oenothera biennis).