Lady Bird Johnson Wildflower Center - The University of Texas at Austin information

 Native Plant Database

Euphorbia cyathophora

Wild Poinsettia, Poinsettia, Fire on the Mountain

Euphorbiaceae (Spurge Family)

Euphorbia cyathophora (Wild poinsettia)
Marcus, Joseph A.
The dwarf poinsettia has green stems and alternate lobed leaves, the uppermost with irregular red blotches near the base. The terminal flowers are yellowish with 1-2 small glands or nectaries.

Fire-on-the-mountain is a member of the spurge family (family Euphorbiaceae). Spurges are commonly herbs, with milky sap; in the tropics also includes shrubs or trees. There are about 290 genera and 7,500 species, mostly of warm or hot regions. Among the valuable products of the family are rubber, castor and tung oils, and tapioca. Most members of the family are poisonous, and their milky sap will irritate the membranes of the eyes and mouth.

Image Gallery:

22 photo(s) available

Plant Characteristics

Duration: Annual
Habit: Herb
Leaf Shape: Oblanceolate
Leaf Pubescence: Glabrous
Leaf Texture: Smooth
Leaf: The upper or bracteal leaves usually red toward the base.
Flower: Flowers 3-5 mm
Fruit: 4.5-5 mm
Size Class: 1-3 ft.

Bloom Information

Bloom Color: Yellow , Green
Bloom Time: May , Jun , Jul , Aug , Sep , Oct , Nov


USA: AL , AZ , AR , CA , FL , GA , HI , IL , IN , IA , KS , KY , LA , MN , MS , MO , NE , NM , NC , OH , OK , SC , SD , TN , TX , UT , VA , WI

Growing Conditions

Water Use: Medium
Light Requirement: Sun
Soil Moisture: Moist
Soil Description: Sandy, Sandy Loam, Medium Loam, Clay Loam


Use Ornamental: Accent, Garden. A good filler plant but can be invasive.
Conspicuous Flowers: yes
Interesting Foliage: yes

Last Update: 2011-08-05