Hedychium gardnerianum
Kahili ginger
Introduced and now reproducing on its own in the wild.
Hedychium gardnerianum (Kahili ginger, Kahila garland-lily, or ginger lily (Aust.)) is a plant native to the Himalayas in India, Nepal, and Bhutan. It grows to 8 ft (2.4 m) tall with long, bright green leaves clasping the tall stems. The very fragrant pale yellow and red flowers are held in dense spikes above the foliage. They appear towards the end of summer.
Read more on Wikipedia →This is an inference, not a schedule. The curve reflects when observers annotated flowering and fruiting — which tracks observer effort as well as plant behavior, and pools all elevations and islands into one signal. Hawaiʻi’s microclimates vary enormously; a species may fruit in January at sea level and June at elevation. Use this to know when to look, then look.
Controlling Hedychium gardnerianum
Best reported: cut with .75g/24oz + 35ml surfactant (FCO or MSO) — one report from NEPM.
5.0cut.75g/24oz + 35ml surfactant (FCO or MSO)
- 5successful. Recommended method · NEPM · 2016-10-31
also cut into rhizomes before spraying. Surfactant increases efficacy greatly
4.0cut.2% Escort, .5% Crop oil, 96.5% water, 3% MSOMetsulfuron-methylG2
- 4more than moderate satisfaction · KMWP · observed
cut stalks and score rhizomes. Little nontarget dieoff.
3.0cut1 gram Escrot per 24 oz of water
- 3moderate satisfaction · OANRP · observed
cut stalks and score rhizomes. apply herbicide to cuts. Requires lots of water for heavy infestations
Ratings are the reporting organisation’s own, on a 5-point scale. Always follow the product label — the label is the law. See these 3 rows in the full table
