// SPECIES PROFILE · ANNUAL · NATIVE

Deam's threeseed mercury

Acalypha deamii

Deam's threeseed mercury (Acalypha deamii) is a annual in the — family. Native range includes AR, KS, MO. Hardy in zones 4b–8a. Mature size 1"–28". Blooms Aug–Nov.

// QUICK FACTS

Family: —
Group: annual
Native range: Native to 11 U.S. states, including AR, IA, IL, IN, KS, KY…
USDA hardiness: Zones 4b–8a
Mature size: 1"–28"
Sun: —
Water: —
Bloom: Aug–Nov
Wildlife value: Pollinator and wildlife support
Ecological role: native species profile

Deam's threeseed mercury (Acalypha deamii) — *Acalypha deamii* — Deam's threeseed mercury. Photo via iNaturalist — (c) Nathan Aaron, some rights reserved (CC BY).

Field Notes

[ growing · ecology · siting · care ]

Deam's threeseed mercury (Acalypha deamii) is a annual in the — family. Native range includes AR, KS, MO. Hardy in zones 4b–8a. Mature size 1"–28". Blooms Aug–Nov.

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, deam's threeseed mercury pairs naturally with: Black-Eyed Susan (Rudbeckia hirta), Common Sunflower (Helianthus annuus), Plains Coreopsis (Coreopsis tinctoria), Tall Thistle (Cirsium altissimum).