// SPECIES PROFILE · PERENNIAL · NATIVE

Robinson's compass plant

Silphium laciniatum var. robinsonii

Robinson's compass plant (Silphium laciniatum var. robinsonii) is a perennial in the — family. Native range includes AR, KS, MO, OK. Hardy in zones 5b–10a. Mature size 4'–10'. Blooms Jul–Sep.

// QUICK FACTS

Family: —
Group: perennial
Native range: Native to 26 U.S. states, including AL, AR, CO, DC, IA, IL…
USDA hardiness: Zones 5b–10a
Mature size: 4'–10'
Sun: Full sun
Water: —
Bloom: Jul–Sep
Wildlife value: Pollinator and wildlife support
Ecological role: native species profile

Robinson's compass plant (Silphium laciniatum var. robinsonii) — *Silphium laciniatum var. robinsonii* — Robinson's compass plant. Photo via iNaturalist — (c) Laura Clark, some rights reserved (CC BY).

Field Notes

[ growing · ecology · siting · care ]

Robinson's compass plant (Silphium laciniatum var. robinsonii) is a perennial in the — family. Native range includes AR, KS, MO, OK. Hardy in zones 5b–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, robinson's compass plant pairs naturally with: Broadleaf Arrowhead (Sagittaria latifolia), Compass Plant (Silphium laciniatum), False Sunflower (Heliopsis helianthoides), Gray Goldenrod (Solidago nemoralis).