Swaziland's Alien Plants Database

Tithonia rotundifolia (Mill.) S.F.Blake
red sunflower
Invasive, Problem species
Origin: Central America
Growth Form: Shrub
Plant Description: Plant: Bushy annual, slightly woody at the base, 1.5–2.0(–3.0) m tall. Leaves: Dark green, rough hairy, up to 150 mm long x 100 mm wide, triangular-ovate, sometimes deeply three-lobed, petioles winged. Flowers: Bright orange-red, large and showy, to 90 mm across, solitary on long stalks much swollen and velvety below the heads, terminating the main and side branches; buds pointed, bracts below petals in two series, narrow, pointed, February–July. Fruit: Brown achenes, in a rounded, spiky mass.
Key Features:
Control: manually, with chemical follow-ups, on seedlings that reappear in cleared areas
More information:
Weeds & Invasive Plants Home Page

Photo - flowers

K Braun, Swaziland's Alien Plants Database

Photo - flowers/leaves

K Braun, Swaziland's Alien Plants Database

map key

Feedback (comments, corrections, additions for this species)

Submit records for this species

Home | Species List | Grid Square List | Map | Bibliography/Data Sources | Photo/Illustration Sources

Swaziland's Plants Database

Swaziland National Trust Commission Home Page