Soldier - Galinsoga parviflora
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Galinsoga is an annual herb up to 2 m tall. The glabrous to pubescent
stems are erect and often branched. The ovate to ovate-lanceolate leaves
are opposite with short petioles. The leaf blades are sparsely hairy with
three prominent nerves, shallowly toothed margins and wedge-shaped bases.
The inflorescence is a small head composed of ray and disk flowers. The
ray flowers are white usually five in number and lack a pappus. The disk
flowers are yellow with a pappus of conspicuously fimbriate scales. The
fruit is a four-angled achene flattened parallel to the involucral bracts.
Galinsoga is a prolific seed producer. It is primarily a weed during
the early growing season thriving under moist conditions. It is found
in crop fields and waste places,
Galinsoga can readily germinate and make rapid growth early in the growing
season allowing it to compete with crop plants. Because it grows best
under moist conditions it can become a serious problem under irrigation
or in areas that receive year-round rainfall.
Links to more information
US Army Corp Noxious Plant
Website, video, and graphics by Rob Nelson
For more information on this plant or management please contact US Army Corp of Engineers