Acacia confusa
Taiwan Acacia
Introduced and now reproducing on its own in the wild.
Acacia confusa is a perennial tree native to South-East Asia. Some common names for it are acacia petit feuille, small Philippine acacia, Formosa acacia (Taiwan acacia) and Formosan koa. It grows to a height of 15m. The tree has become very common in many tropical Pacific areas, including Hawaii, where the species is considered invasive.
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 Acacia confusa
Best reported: IPA-Incision Point Application with 100% Mat 28 — one report from CTAHR/OANRP.
5.0IPA-Incision Point Application100% Mat 28AminocyclopyrachlorG4
- 5successful. Recommended method · CTAHR/OANRP · trial · 2018-04-23
Trial complete, 30 months. 4 cuts/tree, 0.5ml/cut. At 3 months, major defoliation on all trees. At 11 months, 2 of 4 trees dead. At 30 months, 4 of 4 trees dead. Suggest 1 cut/15-20cm.
5.0girdle20% G4, 80% BiodieselTriclopyrG4
- 5successful. Recommended method · OANRP · observed · 2020-03-10
5.0cut-stump20% G4, 80% BiodieselTriclopyrG4
- 5successful. Recommended method · OANRP · observed · 2015-03-11
2.0IPA-Incision Point Application100% MilestoneAminopyralidG4
- 2minimal satisfaction · CTAHR/OANRP · trial · 2018-04-23
Trial complete, 30 months. 4 cuts/tree, 0.5ml/cut. At 11 months, 3 of 4 trees fully defoliated. At 30 months, no trees dead, and largest recovering (circum = 82cm). Higher doses may be effective.
1.0IPA-Incision Point Application100% PolarisImazapyrG2
- 1unsatisfactory results · CTAHR/OANRP · trial · 2018-04-24
Trial complete, 30 months. 4 cuts/tree, 0.5ml/cut. At 30 months, no trees dead. Not effective. Not recommended.
1.0IPA-Incision Point Application100% Ranger ProGlyphosateG9
- 1unsatisfactory results · CTAHR/OANRP · trial · 2018-04-23
Trial complete, 30 months. 4 cuts/tree, 0.5ml/cut. At 11 months, 1 tree defoliated. At 30 months, 4 of 4 trees recovering. Not effective. Not recommended.
1.0IPA-Incision Point Application100% Garlon 4 UltraTriclopyrG4
- 1unsatisfactory results · CTAHR/OANRP · trial · 2018-04-23
Trial complete, 30 months. 4 cuts/tree, 0.5ml/cut. At 30 months, all 4 trees alive and recovering. Not effective. Not recommended.
Ratings are the reporting organisation’s own, on a 5-point scale. Always follow the product label — the label is the law. See these 7 rows in the full table
