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PlantFiles: Virginia Threeseed Mercury, Rhomboid Copperleaf, Diamond Three-Seeded Mercury
Acalypha rhomboidea

Family: Euphorbiaceae (yoo-for-bee-AY-see-ee) (Info)
Genus: Acalypha (ak-uh-LY-fuh) (Info)
Species: rhomboidea (rom-BOY-dee-uh) (Info)

Synonym:Acalypha virginica var. rhomboidea


18-24 in. (45-60 cm)

12-15 in. (30-38 cm)

Not Applicable

Sun Exposure:
Sun to Partial Shade

Parts of plant are poisonous if ingested
Handling plant may cause skin irritation or allergic reaction

Bloom Color:
Chartreuse (Yellow-Green)

Bloom Time:
Mid Summer
Late Summer/Early Fall
Mid Fall


Other details:
May be a noxious weed or invasive
This plant is attractive to bees, butterflies and/or birds
Average Water Needs; Water regularly; do not overwater
Requires consistently moist soil; do not let dry out between waterings
Self-sows freely; deadhead if you do not want volunteer seedlings next season
This plant is resistant to deer

Soil pH requirements:
Unknown - Tell us

Patent Information:

Propagation Methods:
Unknown - Tell us

Seed Collecting:
Unknown - Tell us

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1 positive
2 neutrals
1 negative

Gardeners' Notes:

Positive cazort On Aug 5, 2014, cazort from Jenkintown, PA wrote:

This plant is pretty ubiquitous where I live, southeast PA. It is easy to grow. It can tolerate some shade, but seems to prefer exposed areas. Self-seeds readily, often I find it growing out of cracks in stone or brick walls. There are no showy flowers, but I find the shape of the plant attractive.

I definitely like this plant. It is native, and supports native insects, which help keep the plant in check (if I look closely, there are always bites taken out of the leaves). It seems to compete successfully against a variety of non-native invasive weeds. It may be considered a weed, but I am fond of this plant and generally leave it in my garden where it comes up, unless it is specifically shading out a plant that I am trying to grow.

Negative HelloMissMary On Aug 14, 2009, HelloMissMary from Memphis, TN wrote:

It is springing up in my flower beds as well as in my lawn. Such a pest.

Neutral frostweed On Aug 31, 2006, frostweed from Josephine, Arlington, TX (Zone 8a) wrote:

Acalypha rhomboidea is Native to Texas and other States.

Neutral smiln32 On Aug 31, 2002, smiln32 from Oklahoma City, OK (Zone 7a) wrote:

Kind of considered a weed. Grows all over Missouri - in open woods, moist soils, gravel bars, waste ground, roadsides, railroads.


This plant has been said to grow in the following regions:

Decatur, Georgia
Minneapolis, Minnesota
Cole Camp, Missouri
Jenkintown, Pennsylvania
Memphis, Tennessee
Leesburg, Virginia

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