Species
Rudbeckia hirta
Common Name(s)
black-eyed Susan
Authority
Rudbeckia hirta L.
Family
Asteraceae
Flora Category
Vascular - Exotic
Structural Class
Dicotyledonous Herbs - Composites
Flower Colours
Black,Yellow
Year Naturalised
1997
Origin
North America
Reason for Introduction
Ornamental
Control Techniques
<b>Disposal Method</b><br>Putt up and burn before seeding<br><br>
Life Cycle and Dispersal
Annual to short-lived perennial. Reproduces exclusively by seed which is dispersed by wind, gravity and probably water. Seed is probably long-lived - certainly forms a good seed bank where its been established for a season or so.
Tolerances
Drought and moderately cold tolerant
This page last updated on 26 Jul 2014