National Public Lands Day at Ka’ala

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The 25th Annual National Public Lands Day celebration is happening on September 22!Please join us at the summit of Ka’ala to celebrate the nation’s largest single-day volunteer effort.  We will control invasive weeds that are threatening the unique native cloud forest ecosystem at Ka’ala.

TARGET WEEDS: False pamakani (Ageratina adenophora), Florida blackberry (Rubus argutus), Koster’s curse (Clidemia hirta), strawberry guava (Psidium cattleianum) and many more!

PROJECT: We will be controlling invasive weeds in a very wet, mostly non-native section of the bog just inside the gate. 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: 30 minutes (round trip); optional hike to end of boardwalk, approximately one hour RT

DIFFICULTY: Easy; level terrain (optional boardwalk hike may include some ups and downs at the end of the trail).

WHAT TO BRING: Long pants, long sleeve shirt and shoes with good traction (or rubber work boots). Please review the suggested packing list.

All weeding tools and gloves will be provided.


  • Drive to trailhead (~1 hour)
  • Unload vehicles; safety briefing (~15 minutes)
  • Hike to project site (~15 minutes)
  • Weed control (~2 hours)
  • Lunch (1/2 hour)
  • More weed control (~1 hour)
  • Optional hike to end of boardwalk (~1/2 hour)
  • Hike back to vehicles (~1/2 hour)
  • Wash weeding gear (~15 minutes)
  • Load up trucks (~15 minutes)
  • Return drive to OANRP baseyard (~1 hour)
  • Clean up gear; pau (~15 minutes)