// SPECIES PROFILE · PERENNIAL · NATIVE

Great blue lobelia

Lobelia siphilitica var. siphilitica

Great blue lobelia (Lobelia siphilitica var. siphilitica) is a perennial in the — family. Native range includes AR, KS, MO, OK. Hardy in zones 2b–9a. Mature size 2'–5'. Blooms Jul–Oct.

// QUICK FACTS

Family: —
Group: perennial
Native range: Native to 38 U.S. states, including AL, AR, CO, CT, DC, DE…
USDA hardiness: Zones 2b–9a
Mature size: 2'–5'
Sun: Part shade
Water: —
Bloom: Jul–Oct
Wildlife value: Pollinator and wildlife support
Ecological role: native species profile

Great blue lobelia (Lobelia siphilitica var. siphilitica) — *Lobelia siphilitica var. siphilitica* — Great blue lobelia. Photo via iNaturalist — no rights reserved.

Field Notes

[ growing · ecology · siting · care ]

Great blue lobelia (Lobelia siphilitica var. siphilitica) is a perennial in the — family. Native range includes AR, KS, MO, OK. Hardy in zones 2b–9a. Mature size 2'–5'. Blooms Jul–Oct.

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 blue lobelia pairs naturally with: Broadleaf Arrowhead (Sagittaria latifolia), Gray Goldenrod (Solidago nemoralis), Great Blue Lobelia (Lobelia siphilitica), Lady Fern (Athyrium filix-femina).