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Alien Invader Plants
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CATEGORY: 1 CONTROL: Reproduction is only by seeds, but dense perennial clumps are produced that resist fire as well as contact herbicides, so control mechanically/manually with chemical follow-ups on seedlings which have grown. No herbicide registered for the daisy family at present. Foliar Spray: try Garlon® 4 50ml or Roundup®, etc 150ml/10l water on new seedlings. DESCRIPTION: Stems square; leaves 3-5 lobed (A), toothed and hairy on both surfaces; flowers similar to sunflowers, orange-yellow and carried on long stalks which are swollen and velvety below the flower head; buds (B) are rounded; brown seeds (C) form a rounded, spiky mass; a scraggly, branching, herbaceous shrub woody at the base, up to 3,5 m tall. Flowering time: April, May and June. ORIGIN: Originates from Mexico and Central America and introduced as an ornamental. WHERE FOUND/PROBLEMS CAUSED: Common along the coast below 760m often forming extensive and showy colonies in urban areas and along roadsides and railway lines. Grows rapidly and is difficult to control. Invades savanna, grassland, roadsides and riverbanks causing unsightly access problems and also totally swamps and replaces the indigenous vegetation. DID YOU KNOW: The name tithonia is derived from Tithonia, consort of
Aurora, the dawn goddess.
This page was last edited on 22 April, 2006 | |||||||||||||||||||||
