Hedychium gardnerianum

What this means for control work

Fruit has been recorded Nov to Jan. Treat before it, not during.

Based on 11 Hawaiian field observations in which the observer recorded fruit, out of 69 annotated records for this species. These are people standing in front of the plant, dated and located to the metre — the densest Hawaiian evidence available. What they cannot tell you is whether the fruit was ripe.

Birds carry this one, so a treated site is not a closed problem — seed arrives from wherever else the species is fruiting. Timing matters at landscape scale, not just on your parcel.