• Photo of Acalypha rhomboidea (Acalypha rhomboideas)

Plant Profile: Acalypha rhomboidea

Taxonomy: Acalypha rhomboidea

Names

Common Three-Seed Mercury, Copperleaf, Rhomboid Mercury, Virginia Three-Seed Mercury

  • Photo of Acalypha rhomboidea (Acalypha rhomboideas)

Phonetic Spelling:ak-uh-LY-fuh rom-boy-DEE-uh

Genus:Acalypha

Species:rhomboidea

Family:Euphorbiaceae

Common Three-seed Mercury is a perennial wildflower belonging to the spurge family, found throughout North Carolina. This species is indigenous to the central and eastern regions of the United States and extends into Canada. Characterized by its small flowers and prominent lobed bracts, it blooms from summer to fall and readily self-seeds. The plant thrives in sunny to partially shaded environments and can adapt to a range of soil types, including moist to dry clay, loam, or rocky conditions.

However, it can become invasive, making it unsuitable for residential gardens. Additionally, its seeds are a food source for birds.

Acalypha rhomboidea Feature Summary

Acalypha rhomboidea Image Gallery

Tags

#full sun tolerant
#weedy
#NC native
#self-seeding
#disturbed areas
#native annual
#annual weed
#native weed
#bird friendly

Similar Plants

Acalypha rhomboidea is often confused with:

Acalypha rhomboidea Feature Summary

Attributes
Eastern Canada, central and eastern U.S.A.
AL , AR , CT , DC , DE , FL , GA , IA , IL , IN , KS , KY , LA , MA , MD , ME , MI , MN , MO , MS , NC , ND , NE , NH , NJ , NY , OH , OK , PA , RI , SC , TN , TX , VA , VT , WI , WV Canada: NB
Seeds are eaten by birds
Fruit
3 lobes spherical capsule containing three seeds.
Flowers
Mid-summer through fall. A 5-9 lobed bract forms around the inflorecese in the axils of the leaves. There are both male and female flowers within the bract without petals or sepals.
< 1 inch
Leaves
Lanceolate to ovate simple alternate leaves with serrated margins, conspicuous pinnate venation and hairy petioles. 3.5" long and 1" wide. The leaves tend to congregate together near the top of the stems. In the fall leaves can be copper-purple hence the common name.
Purple/Lavender
Brown/Copper
Ovate
Lanceolate
1-3 inches
< 1 inch
Stem
The central stem is usually unbranched with lines of fine white hairs or just hairy.
Hairy (pubescent)
Whole Plant Traits
Annual
Native Plant
Weed
Cultural Conditions
Full sun (6 or more hours of direct sunlight a day)
Partial Shade (Direct sunlight only part of the day, 2-6 hours)
Good Drainage
Moist
Occasionally Dry
Coastal
Mountains
Piedmont
Clay
Loam (Silt)
Shallow Rocky
Landscape
Naturalized Area

Acalypha rhomboidea Attributes

Acalypha rhomboidea: Country Or Region Of Origin

Eastern Canada, central and eastern U.S.A.

Acalypha rhomboidea: Distribution

AL , AR , CT , DC , DE , FL , GA , IA , IL , IN , KS , KY , LA , MA , MD , ME , MI , MN , MO , MS , NC , ND , NE , NH , NJ , NY , OH , OK , PA , RI , SC , TN , TX , VA , VT , WI , WV Canada: NB

Acalypha rhomboidea: Wildlife Value

Seeds are eaten by birds

Acalypha rhomboidea: Life Cycle

Annual
Biennial
Bulb
Perennial
Woody

Acalypha rhomboidea: Recommended Propagation Strategy

Division
Grafting
Layering
Leaf Cutting
Root Cutting
Seed
Stem Cutting

Acalypha rhomboidea Fruit

Acalypha rhomboidea: Fruit Description

3 lobes spherical capsule containing three seeds.

Acalypha rhomboidea: Fruit Type

Achene
Aggregate
Berry
Capsule
Caryopsis
Drupe
Follicle
Legume
Nut
Pome
Samara
Schizocarp
Siliqua

Acalypha rhomboidea: Display/Harvest Time

Fall
Spring
Summer
Winter

Acalypha rhomboidea Flowers

Acalypha rhomboidea: Flower Description

Mid-summer through fall. A 5-9 lobed bract forms around the inflorecese in the axils of the leaves. There are both male and female flowers within the bract without petals or sepals.

Acalypha rhomboidea: Flower Inflorescence

Catkin
Corymb
Cyme
Head
Insignificant
Panicle
Raceme
Solitary
Spadix
Spike
Umbel

Acalypha rhomboidea: Flower Bloom Time

Winter
Spring
Summer
Fall

Acalypha rhomboidea: Flower Size

1-3 inches
3-6 inches
< 1 inch
> 6 inches

Acalypha rhomboidea Leaves

Acalypha rhomboidea: Leaf Description

Lanceolate to ovate simple alternate leaves with serrated margins, conspicuous pinnate venation and hairy petioles. 3.5" long and 1" wide. The leaves tend to congregate together near the top of the stems. In the fall leaves can be copper-purple hence the common name.

Acalypha rhomboidea: Leaf Color

spa
Green

Acalypha rhomboidea: Deciduous Leaf Fall Color

spa
Brown/Copper
spa
Purple/Lavender

Acalypha rhomboidea: Leaf Type

Compound (Pinnately , Bipinnately, Palmately)
Fronds
Needles
Sheath
Simple

Acalypha rhomboidea: Leaf Arrangement

Alternate
Opposite
Other/more complex
Rosulate
Whorled

Acalypha rhomboidea: Leaf Shape

Acicular
Auriculate
Cordate
Cuneate
Deltoid
Elliptical
Filiform
Lanceolate
Linear
Oblanceolate
Oblong
Obovate
Obtuse
Orbicular
Ovate
Palmasect
Palmatifid
Peltate
Pinnatifid
Pinnatisect
Reniform
Rhomboidal
Spatulate
Subcordate
Subulate

Acalypha rhomboidea: Leaf Margin

Crenate
Crenulate
Dentate
Denticulate
Doubly Crenate
Doubly Dentate
Doubly Serrate
Entire
Lobed
Serrate
Sinuate
Undulate

Acalypha rhomboidea: Hairs Present

No
Yes

Acalypha rhomboidea: Leaf Length

< 1 inch
1-3 inches
3-6 inches
> 6 inches

Acalypha rhomboidea: Leaf Width

< 1 inch
1-3 inches
3-6 inches
> 6 inches

Acalypha rhomboidea Stem

Acalypha rhomboidea: Stem Description

The central stem is usually unbranched with lines of fine white hairs or just hairy.

Acalypha rhomboidea: Stem Color

grass
Green

Acalypha rhomboidea: Stem Is Aromatic

No
Yes

Acalypha rhomboidea: Stem Surface

Corky Ridges
Covered with a powdery bloom (glaucous)
Dull
Hairy (pubescent)
Polished
Smooth (glabrous)

Acalypha rhomboidea Whole Plant Traits

Acalypha rhomboidea: Plant Type

Annual
Bulb
Carnivorous
Edible
Epiphyte
Fern
Ground Cover
Herb
Herbaceous Perennial
Houseplant
Mushroom
Native Plant
Ornamental Grasses and Sedges
Perennial
Poisonous
Rose
Shrub
Succulent
Tree
Turfgrass
Vegetable
Vine
Water Plant
Weed
Wildflower

Acalypha rhomboidea: Habit/Form

Arching
Ascending
Broad
Cascading
Climbing
Clumping
Columnar
Conical
Creeping
Dense
Erect
Horizontal
Irregular
Mounding
Multi-stemmed
Multi-trunked
Open
Oval
Prostrate
Pyramidal
Rounded
Spreading
Vase
Weeping

Acalypha rhomboidea: Growth Rate

Slow
Medium
Rapid

Acalypha rhomboidea: Maintenance

Low
Medium
High

Acalypha rhomboidea Cultural Conditions

Acalypha rhomboidea: Light

Dappled Sunlight (Shade through upper canopy all day)
Deep shade (Less than 2 hours to no direct sunlight)
Full sun (6 or more hours of direct sunlight a day)
Partial Shade (Direct sunlight only part of the day, 2-6 hours)

Acalypha rhomboidea: Soil Drainage

Frequent Standing Water
Good Drainage
Moist
Occasional Flooding
Occasionally Dry
Occasionally Wet
Very Dry

Acalypha rhomboidea: NC Region

Coastal
Mountains
Piedmont

Acalypha rhomboidea: Soil Texture

Clay
High Organic Matter
Loam (Silt)
Sand
Shallow Rocky

Acalypha rhomboidea Landscape

Acalypha rhomboidea: Landscape Location

Coastal
Container
Hanging Baskets
Houseplants
Lawn
Meadow
Naturalized Area
Near Septic
Patio
Pond
Pool/Hardscape
Recreational Play Area
Riparian
Rock Wall
Slope/Bank
Small Space
Vertical Spaces
Walkways
Woodland

Acalypha rhomboidea: Problems

Allelopathic
Contact Dermatitis
Frequent Disease Problems
Frequent Insect Problems
Invasive Species
Malodorous
Messy
Poisonous to Humans
Problem for Cats
Problem for Children
Problem for Dogs
Problem for Horses
Short-lived
Spines/Thorns
Weak Wood
Weedy