// SPECIES PROFILE · SHRUB · NATIVE

Oldfield blackberry

Rubus alumnus

Oldfield blackberry (Rubus alumnus) is a shrub in the — family. Native range includes AR, MO. Hardy in zones 2b–9a. Blooms Apr–Apr.

// QUICK FACTS

Family: —
Group: shrub
Native range: Native to 22 U.S. states, including AR, CT, DC, IL, IN, KY…
USDA hardiness: Zones 2b–9a
Mature size: —
Sun: Part shade
Water: Medium
Bloom: Apr–Apr
Wildlife value: Pollinator and wildlife support
Ecological role: native species profile

Oldfield blackberry (Rubus alumnus) — *Rubus alumnus* — Oldfield blackberry. Photo via iNaturalist — (c) Nathan Aaron, some rights reserved (CC BY).

Field Notes

[ growing · ecology · siting · care ]

Oldfield blackberry (Rubus alumnus) is a shrub in the — family. Native range includes AR, MO. Hardy in zones 2b–9a. Blooms Apr–Apr.

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, oldfield blackberry pairs naturally with: American Hazelnut (Corylus americana), American Plum (Prunus americana), American Witch Hazel (Hamamelis virginiana), Black Raspberry (Rubus occidentalis).