Allium triquetrum L.
Onion weed (Allium triquetrum) is a long-lived, evergreen perennial herb that is native to South West Europe and North Africa. It was introduced to New Zealand as a garden ornamental and was first recorded in the wild (naturalised) in 1899. The plant grows from underground bulbs and has narrow, bright green leaves with a distinct keel, giving them a triangular cross-section. It flowers from July to November, producing drooping clusters of white, bell-shaped flowers with a green stripe on each petal, which develop into capsules containing black seeds. It tolerates shade, damp conditions and a range of soil types. It reproduces by seed and vegetatively from bulbs and bulbils. Seeds are dispersed by water and human activities. Bulbs and bulbils are spread by soil movement, dumped garden waste and other human activities.
This description has been automatically generated using information from trusted sources. If you notice any errors or omissions, please let us know.