Common Threeseed Mercury
Acalypha rhomboidea
Found in woodlands, disturbed ground. Weakley, Flora of the Southeastern United States (2025), South Central edition What its natural habitat tells you
Native to Mississippi (estimated). How scores work Is it native here?
Profile 94%
- Height
- 8–24 inches
- Light
- Full sun, Partial shade
- Soil moisture
- Somewhat dry to moist
At a glance
- Life cycle
- Annual
- Bloom
- June to November
Not yet recorded · Spread · Leaves
Recorded in 56 Mississippi counties.
Natural habitats
Places it grows wild. Not a planting requirement. Each habitat page lists the plants and wildlife also found there.
Forest or woodland where the source does not say how moist or dry.
Roadsides, fields and disturbed ground
Ground opened by people: roadsides, old fields, pastures, fencerows and lots.
Who uses this plant?
6CaterpillarsGenus host records with ranges including MS
Genus host records with ranges including MS · Acalypha
- Acharia stimuleaSaddleback Caterpillar Moth
- Diaphania hyalinataMelonworm Moth
- Orthonama obstipataThe Gem
- Oxydia vesuliaSpurge Spanworm Moth
- Scopula limboundataLarge Lace-Border
- Spodoptera frugiperdaFall Armyworm Moth
0BeesSoutheastern regional records
0Specialist beesPollen specialists
10BirdsRecorded genus food-resource interactions; not a state feeding claim
Recorded genus food-resource interactions; not a state feeding claim · Acalypha
- Agelaius phoeniceusRed-winged Blackbird
- Ammospiza leconteiiLeConte's Sparrow
- Anthus rubescensAmerican Pipit
- Catharus guttatusHermit Thrush
- Columbina passerinaCommon Ground Dove
- Molothrus aterBrown-headed Cowbird
- Peucaea aestivalisBachman's Sparrow
- Spizella passerinaChipping Sparrow
- Spizella pusillaField Sparrow
- Zenaida macrouraMourning Dove
Direct food only: birds recorded eating this genus across North America. Caterpillars on host plants also feed nesting birds. NC Native Plant Society: butterfly gardening
No records yet · Ants · Beetles · Flies · Adult butterflies / moths · Other wasps · Other insects
Plant details
- Family
- Euphorbiaceae
- Flower color
- Green
Safety has not been reviewed for this plant; check toxicity and thorns before planting.
Growing sources and scope
- Bloom · “Late June to November” · Weakley, Flora of the Southeastern United States (2025), Carolinas & Georgia edition · Carolinas and Georgia
- Flower color · “Green” · Lady Bird Johnson Wildflower Center
- Height · “8–24 inches” · Minnesota Wildflowers
- Life cycle · “Annual” · NC Extension Plant Toolbox
- Light · “Full sun (6 or more hours of direct sunlight a day); Partial shade (direct sunlight only part of the day, 2-6 hours)” · NC Extension Plant Toolbox (ranked first; Lady Bird Johnson Wildflower Center differs)
- primary_flower_color · “green” · Lady Bird Johnson Wildflower Center
- Soil · “Moist; Occasionally dry” · NC Extension Plant Toolbox (ranked first; Lady Bird Johnson Wildflower Center differs)
Also known as
Common Three Seeded Mercury
Conservation status
| Mississippi rank | SNR |
|---|---|
| Global rank | G5 |
| MS status | Not verified |
| Federal status | Not verified |
Will it fit your yard?
Check this plant against your county, sun and soil moisture. Conditions are checked in your browser.
Sources
- Weakley, Flora of the Southeastern United States (2025), South Central edition
- USDA PLANTS
- Vascular Plants of North Carolina (NC Natural Heritage Program)
- Mississippi occurrence source
- Shropshire & Tallamy 2025, Lepidoptera of North America north of Mexico, ZooKeys 1261 (ODbL)
- Noori, Seltmann & Orr 2026, A curated and integrated dataset for exploring global bee-plant interactions (GloBI), Zenodo, CC BY 4.0
- Smith, Bachelder, Russell, Morales, Mosher & Seltmann 2024, Bee-Specialization-Modeling v0.6.1 (specialist host table compiled from J. Fowler's pollen specialist bee lists), Zenodo, CC BY 4.0
- Hurlbert, Olsen, Sawyer & Winner 2021, Avian Diet Database, Scientific Data 8: 260 (CC0)
- Narango, Tallamy & Shropshire 2020, Few keystone plant genera support the majority of Lepidoptera species, Nature Communications