Galinsoga ciliata

Scientific Name Galinsoga ciliata (Rafin.) Blake
Common Names English: Hairy galinsoga, shaggy soldier; German: Zottiges Franzosenkraut, Behaartes Franzosenkraut; French: Galinsoga cilié
Description Seed-producing summer annual weed, 15 to 60 cm (5.9 - 23.62 inch) high, originates from Peru, came to Germany from France.

Descriptions

Characteristic Features

Small, 3-toothed ray flowers, opposite leaves, and hairy stems.

Young Plant

Cotyledons club-shaped with slightly indented tip. Hypocotyl is very short, green, becoming maroon with age. Young leaves opposite, triangular with slightly toothed margins, and covered with hairs.

Cotyledons

Club-shaped with slightly indented tip.

Stems

Erect, reaching up to 60 cm (23.62 inch) height, freely- branched, green or less often maroon-tinted, and covered with hairs.

Leaves

Opposite, oval to triangular, coarsely-toothed, petiolated, and densely covered with hairs on the upper surface. Lower leaf surfaces have hairs that primarily occur on the veins.

Propagatio Organs

Flowers

Many flowers are produced from terminal stems or from leaf axils. Flowers are less than 1 cm (0.39 inch) wide and consist of 4 to 5 white (or less often pink) 3-toothed ray flowers, many yellow disk flowers.

Flowering Period

May - November.

Fruit

Brown to black achene, 1.5 mm (0.059 inch) long, hairy, tapered from the base to the apex, with a white pappus that resembles a crown.

Seeds

Germination occurs in late spring until autumn, fresh seeds are not dormant and can germinate until late autumn.

Viability Of Seeds

More than 10 years.

Propagation

By seeds.
Up to 7,500 seeds per plant.

Occurrence

Habitat

Waste ground, cultivated areas, roadsides.

Soil

Warm and loamy or sandy loam soils.

Agricultural Importance

Galinsoga ciliata is achallenging weed in vegetable and nursery crops and greatly reduces yield due to strong competition for water and nutrients and high abundance.

Control

Integrated Crop Management

Mechanical control methods are very effective in seedling stage.

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