// SPECIES PROFILE · ANNUAL · NATIVE

Slender threeseed mercury

Acalypha monococca

Slender threeseed mercury (Acalypha monococca) is a annual in the — family. Native range includes AR, KS, MO, OK. Hardy in zones 5a–10a. Mature size 1"–20". Blooms Jun–Nov.

// QUICK FACTS

Family: —
Group: annual
Native range: Native to AR, IL, KS, LA, MO, OK
USDA hardiness: Zones 5a–10a
Mature size: 1"–20"
Sun: —
Water: —
Bloom: Jun–Nov
Wildlife value: Pollinator and wildlife support
Ecological role: native species profile

Slender threeseed mercury (Acalypha monococca) — *Acalypha monococca* — Slender threeseed mercury. Photo by Mason Brock (Masebrock) via Wikimedia Commons (Public domain).

Field Notes

[ growing · ecology · siting · care ]

Slender threeseed mercury (Acalypha monococca) is a annual in the — family. Native range includes AR, KS, MO, OK. Hardy in zones 5a–10a. Mature size 1"–20". Blooms Jun–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, slender threeseed mercury pairs naturally with: Black-Eyed Susan (Rudbeckia hirta), Common Sunflower (Helianthus annuus), Indian Blanket (Gaillardia pulchella), Lemon Beebalm (Monarda citriodora).