Cryptomeria japonica
sugi
Introduced and now reproducing on its own in the wild.
Cryptomeria (literally "hidden parts") is a monotypic genus of conifer in the cypress family Cupressaceae, formerly belonging to the family Taxodiaceae. It includes only one species, Cryptomeria japonica (syn. Cupressus japonica L.f.). It is endemic to Japan, where it is known as sugi (Japanese: 杉). The tree is called Japanese sugi pine or Japanese red-cedar in English.
Read more on Wikipedia →Only 0 phenology-annotated observations exist for this species in Hawaiʻi — too few to describe a season. No window is inferred.
Controlling Cryptomeria japonica
Best reported: IPA-Incision Point Application with 100% Milestone (aminopyralid) — one report from CTAHR/OANRP.
5.0IPA-Incision Point Application100% Milestone (aminopyralid)AminopyralidG4
- 5successful. Recommended method · CTAHR/OANRP · trial · 2018-04-24
Trial complete, 27 months. 8 cuts/tree, 0.5ml/cut. At 8 months, 2 of 5 trees dead (circum <134cm). At 13 months 3 of 5 dead. At 19 months 5 of 5 dead. Suggest 1 cut/15-20cm.
4.0IPA-Incision Point Application100% Ranger Pro (glyphosate)GlyphosateG9
- 4more than moderate satisfaction · CTAHR/OANRP · trial · 2018-04-25
Trial complete, 27 months. 8 cuts/tree, 0.5ml/cut. At 8 months, 2 of 5 trees dead (circum <119cm). At 13 months 3 of 5 dead. At 19 months 5 of 5 dead. At 27 months, 1 thought dead found to be alive. Suggest 1 cut/15-20cm.
3.0IPA-Incision Point Application100% Polaris (imazapyr)ImazapyrG2
- 3moderate satisfaction · CTAHR/OANRP · trial · 2018-04-24
Trial complete, 27 months. 8 cuts/tree, 0.5ml/cut. At 27 months, 2 of 5 trees dead (circum <115cm). The remaining 3 trees had partially defoliated at 19 months, but recovered by 27 months. May be effective at higher rates.
1.0IPA-Incision Point Application100% Garlon 4 (triclopyr)TriclopyrG4
- 1unsatisfactory results · CTAHR/OANRP · trial · 2018-04-26
Trial complete, 27 months. 8 cuts/tree, 0.5ml/cut. Initial defoliation at 2 months and 8 months, but all trees recovered by 13 months. 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 4 rows in the full table
