Puali’i Weed Control

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TARGET WEEDS: Coralberry (Rivina humilis), Koster’s curse (Clidemia hirta), gunpowder tree (Trema orientalis), downy wood fern (Cyclosorus dentatus) and many more!

PROJECT: We will be controlling invasive weeds in a shady gulch within a lonomea (Sapindus sp.) forest. We will use small hand tools (hand saws and pruners) and will apply a caution-labeled herbicide (Garlon4) to the cut stems of weeds with drip applicator bottles.

HIKING TIME: 2 hours (round trip)

DIFFICULTY: Moderate; some elevation gain.

WHAT TO BRING: Long pants, long sleeve shirt and shoes with good traction.

All weeding tools and gloves will be provided.


  • Drive to trailhead (~1 hour)
  • Unload vehicles; safety briefing (~15 minutes)
  • Hike to project site (~1 hour)
  • Weed control (~1.5 hours)
  • Lunch (1/2 hour)
  • More weed control (~1.5 hours)
  • Explore nearby forest (~1/2 hour)
  • Hike back to vehicles (~1 hour)
  • Wash weeding gear (~15 minutes)
  • Load up trucks (~15 minutes)
  • Return drive to Army natural resources baseyard (~1 hour)
  • Clean up gear; pau (~15 minutes)