// SPECIES PROFILE · ANNUAL · NATIVE

Roughfruit amaranth

Amaranthus tuberculatus

Roughfruit amaranth (Amaranthus tuberculatus) is a annual in the — family. Native range includes AR, MO, OK. Hardy in zones 2b–10a. Mature size 29"–6'. Blooms Jun–Oct.

// QUICK FACTS

Family: —
Group: annual
Native range: Native to 25 U.S. states, including AL, AR, CT, IA, IL, IN…
USDA hardiness: Zones 2b–10a
Mature size: 29"–6'
Sun: —
Water: —
Bloom: Jun–Oct
Wildlife value: Pollinator and wildlife support
Ecological role: native species profile

Roughfruit amaranth (Amaranthus tuberculatus) — *Amaranthus tuberculatus* — Roughfruit amaranth. Photo by Unknown authorUnknown author via Wikimedia Commons (Public domain).

Field Notes

[ growing · ecology · siting · care ]

Roughfruit amaranth (Amaranthus tuberculatus) is a annual in the — family. Native range includes AR, MO, OK. Hardy in zones 2b–10a. Mature size 29"–6'. Blooms Jun–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, roughfruit amaranth pairs naturally with: Black-Eyed Susan (Rudbeckia hirta), Common Sunflower (Helianthus annuus), Swamp verbena (Verbena hastata), Slenderleaf false foxglove (Agalinis tenuifolia).