Eucalyptus robusta
Swamp Mahogany
Introduced and now reproducing on its own in the wild.
Eucalyptus robusta, commonly known as swamp mahogany or swamp messmate, is a tree native to eastern Australia. Growing in swampy or waterlogged soils, it is up to 30 m (98 ft) high with thick spongy reddish brown bark and dark green broad leaves, which help form a dense canopy. The white to cream flowers appear in autumn and winter. The leaves are commonly eaten by insects, and are a food item for the koala. It is an important...
Read more on Wikipedia →Only 1 phenology-annotated observation exist for this species in Hawaiʻi — too few to describe a season. No window is inferred.
Controlling Eucalyptus robusta
Best reported: drill with 100% Ranger Pro — one report from OANRP.
5.0drill100% Ranger ProGlyphosateG9
- 5successful. Recommended method · OANRP · trial · 2015-02-23
Used electric drill with 3" deep paddle drill bit. Put holes 1" apart, and drilled each 3" deep. Filled holes with glyphosate. Pretty hot treatment. Plants appeared dead at both 3 and 6 month checks. Only 3 trees tested. Possibly could put holes farther apart or make less deep to reduce total amount of herbicide. If treated many trees at this rate in 1 acre, could exceed max usage/year.
Ratings are the reporting organisation’s own, on a 5-point scale. Always follow the product label — the label is the law. See these 1 rows in the full table
