(Phyllanthus urinaria)

Family: Euphorbiaceae

Also Known As:

Weed Photos: Courtesy of Dr. Lambert McCartey. Clemson University. Clemson, SC.



Chamberbitter is a warm season annual. The stems of chamber bitter are upright and grooved. The leaves are small and have smooth margins which are arranged oppositely on branchlets. Flowers are inconspicuous and form in warm weather. The fruit of chamber bitter is green and form on the underside of the branchlets. The seed explodes and spreads seeds in the surrounding area. Chamber bitter reproduces from seed. Chamber bitter is found from Texas to Florida and in the Tropics.


Germination Dates

7: June-July
8: June-July
9: May
10: May-June

Cultural Practices

Chamber bitter grows in turf, nurseries and other disturbed areas. Hand pull when possible.

Herbicide Use

Repeated applications of growth regulator herbicides.

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