Siratro. Macroptilium atropurpureum
Native to Central and North America
Can form dense ground covers on the dunes displacing indigenous plants. Only a problem on the north coast of NSW.
Form: Twining herb, stems can be 2 - 3m long.
Flower: Dark purple. Summer to autumn
Fruit/Seed: Long slender pods.
Control: Hand removal is difficult because of its large root system. Seed pod collection and disposal is important to ensure eradication.
A number of chemical controls are available. Scrape/cut and paint with herbicide is effective.