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// SPECIES PROFILE · SHRUB · NATIVE

Twoleaf senna

Senna roemeriana

Twoleaf senna (Senna roemeriana) is a shrub in the — family. Native range includes OK — verified against the Lady Bird Johnson Wildflower Center native distribution database. Hardy in zones 4a–10a. Blooms May–Oct.

// QUICK FACTS
Family
—
Group
shrub
Native range
Native to NM, OK, TX
USDA hardiness
Zones 4a–10a
Mature size
—
Sun
Part shade
Water
Low · xeric
Bloom
May–Oct
Wildlife value
Pollinator and wildlife support
Ecological role
native species profile
Twoleaf senna (Senna roemeriana)
Senna roemeriana — Twoleaf senna. Photo by Patrick Alexander from Las Cruces, NM via Wikimedia Commons (CC0).

Field Notes

[ growing · ecology · siting · care ]

Twoleaf senna (Senna roemeriana) is a shrub in the — family. Native range includes OK — verified against the Lady Bird Johnson Wildflower Center native distribution database. Hardy in zones 4a–10a. Blooms May–Oct. Low water use makes it a strong candidate for xeric and drought-conscious plantings.

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, twoleaf senna pairs naturally with: Chickasaw Plum (Prunus angustifolia), False Indigo Bush (Amorpha fruticosa), Smooth Sumac (Rhus glabra), Prairie redroot (Ceanothus herbaceus).

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