// SPECIES PROFILE · SHRUB · NATIVE

Smooth alder

Alnus serrulata

Smooth alder (Alnus serrulata) is a shrub in the — family. Native range includes AR, KS, MO, OK. Hardy in zones 3a–11b.

// QUICK FACTS

Family: —
Group: shrub
Native range: Native to 31 U.S. states, including AL, AR, CT, DC, DE, FL…
USDA hardiness: Zones 3a–11b
Mature size: —
Sun: Part shade
Water: High · moisture-loving
Bloom: —
Wildlife value: Pollinator and wildlife support
Ecological role: native species profile

Smooth alder (Alnus serrulata) — *Alnus serrulata* — Smooth alder. Photo by Eric Hunt via Wikimedia Commons (CC BY-SA 4.0).

Field Notes

[ growing · ecology · siting · care ]

Smooth alder (Alnus serrulata) is a shrub in the — family. Native range includes AR, KS, MO, OK. Hardy in zones 3a–11b.

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, smooth alder pairs naturally with: Buttonbush (Cephalanthus occidentalis), False Indigo Bush (Amorpha fruticosa), New Jersey Tea (Ceanothus americanus), Smooth Sumac (Rhus glabra).