// SPECIES PROFILE · ANNUAL · NATIVE

Slender threeseed mercury

Acalypha gracilens

Slender threeseed mercury (Acalypha gracilens) is a annual in the — family. Native range includes AR, MO, OK. Hardy in zones 3a–11b. Mature size 6"–2'. Blooms May–Oct.

// QUICK FACTS

Family: —
Group: annual
Native range: Native to 33 U.S. states, including AL, AR, CT, DC, DE, FL…
USDA hardiness: Zones 3a–11b
Mature size: 6"–2'
Sun: Part shade
Water: —
Bloom: May–Oct
Wildlife value: Pollinator and wildlife support
Ecological role: native species profile

Slender threeseed mercury (Acalypha gracilens) — *Acalypha gracilens* — Slender threeseed mercury. Photo by James H. Miller & Ted Bodner, Southern Weed Science Society, Bugwood.org via Wikimedia Commons (CC BY 3.0).

Field Notes

[ growing · ecology · siting · care ]

Slender threeseed mercury (Acalypha gracilens) is a annual in the — family. Native range includes AR, MO, OK. Hardy in zones 3a–11b. Mature size 6"–2'. Blooms May–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, slender threeseed mercury pairs naturally with: Black-Eyed Susan (Rudbeckia hirta), Common Sunflower (Helianthus annuus), Swamp verbena (Verbena hastata), Common threeseed mercury (Acalypha rhomboidea).