// SPECIES PROFILE · SHRUB · NATIVE

Seaside alder

Alnus maritima

Seaside alder (Alnus maritima) is a shrub in the — family. Native range includes OK — verified against the Lady Bird Johnson Wildflower Center native distribution database. Hardy in zones 5b–9a. Blooms Jul–Aug.

// QUICK FACTS

Family: —
Group: shrub
Native range: Native to DE, GA, MD, OK
USDA hardiness: Zones 5b–9a
Mature size: —
Sun: Part shade
Water: High · moisture-loving
Bloom: Jul–Aug
Wildlife value: Pollinator and wildlife support
Ecological role: native species profile

Seaside alder (Alnus maritima) — *Alnus maritima* — Seaside alder. Photo by Robert H. Mohlenbrock. USDA NRCS. 1995. Northeast wetland flora: Field office guide to plant species. Northeast National Technical Center, Chester, PA. Courtesy of USDA NRCS Wetland Science Institute. via Wikimedia Commons (Public domain).

Field Notes

[ growing · ecology · siting · care ]

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, seaside alder pairs naturally with: American Bladdernut (Staphylea trifolia), American Hazelnut (Corylus americana), American Plum (Prunus americana), American Witch Hazel (Hamamelis virginiana).