Japanese sunflower, Mexican sunflower
Tithonia diversifolia, Fam. Asteraceae
A robust perennial many branched sub-shrub to 3m with course pithy-centred green stems.
Locally Declared Plants
Under the Local Law provision of the Local Government Act 1993, Local Government may declare a weed specifically for their Council area and enforce their control.
|Form or habit:||Shrub|
Alternate deeply 3-5 lobed and ovate in outline, 60-150 x 50 -120mm, margins bluntly toothed, dull green above, paler below and softly hairy on both surfaces; stalks to 100mm long.
|Flower description:||Large bright golden-yellow, sunflower-like heads to about 100mm across, borne in terminal and axillary sprays on long stout stems.|
|Fruit description:||‘Seeds’ brown silky-hairy, oblong slightly flattened and 4-angled, 5-8mm long with a crown of short scales and 2 awns about 5mm long.|
|Food source for:|
|Toxicity:||No toxicity known|
|Notes:||Spread by: seeds spread by wind, water and animals. Resprouts from root stock after disturbance. Invades/threats: endangered open forests, roadsides, waterways, embankments, unmanaged lands and fire degraded hillsides. Notes: introduced as a garden ornamental, now widely naturalised in this region, especially on hills with remnant open forest and roadside between North Mackay and Farleigh. Forms extensive, dense thickets and out-competes native vegetation.|
|Information sources:||Mackay Regional Pest Management Group (2018) Weeds of the Mackay Whitsunday Region Second Edition.|