Stopping the Silent Invasion
Report a Pest: 643-PEST
Call the Pest Hotline to report invasive pests.
What's This?

KISC's Weed of the Week (WOW)

Himalayan blackberry (Rubus discolor) See this week's featured weed: Himalayan blackberry

The Weed of the Week Program is brought to you by Kauai Community Radio and the Kauai Invasive Species Committee. Each week on the "Back to the Garden" show, hosts will feature a different weed. Learn more about what to look out for in your own garden and on the Garden Island. Nearly 75% of Hawaii's invasive species have been introduced for ornamental and horticultural purposes. Beautiful plants can become beasts in the forest if they "jump the fence". By selecting native and/or non-invasive plants for your garden and getting rid of priority weeds, you can protect the forest from your own backyard! Listen Live for the Weed of the Week every Wednesday from 12-1pm at

What can you do to help?

Your decisions make a difference! Here are actions that help our island.

  1. Plant native! Or choose non-invasive alternatives. See these publications (pdfs): Best Native Plants for Landscapes and Native Hawaiian Plants for Landscaping, Conservation, and Reforestation.
  2. Learn which species are invasive. Check out, Hawaii's Most Invasive Horticultural Plants and Hawaii's noxious weeds list.
  3. Listen for coqui frogs and look for insects. Many pests, such as coqui frogs and little fire ants, like to hitchhike on plants. Hear the coqui's call.
  4. Ask your landscaper or nursery to sign the Voluntary Codes of Conduct. See the national program and our local program endorsed by Kauai Landscaping Industry Council.
  5. Report target species to 643-PEST. The list of KISC target species is on the right column of this page, and other high profile pests are listed by the Hawaii Invasive Species Council. If you see something new or strange, call immediately.
  6. Always have your plants inspected by the Hawaii Department of Agriculture if you are transporting them inter-island. See HDOA's quarantine policy.
  7. Use the Hawaii Weed Risk Assessment before importing or selecting new seeds or plants for your garden. Direct inquiries to
  8. Control established weeds in your yard. For assistance on the best methods, contact our local extension office of UH's College of Tropical Agriculture & Human Resources.
  9. Ask a botanist or the Plant Doctor. Use National Tropical Botanical Garden's free program to have your plant disease or weed identified. For more info, email or call NTBG at 808-332-7324 ext. 215.
  10. Clean all of your hiking and hunting gear...don't spread the seeds! Check out the new boot scrubbing station at Moalepe Trailhead in Wailua.
  11. VOLUNTEER. See what damage occurs in our native forest when weeds jump the fence. Become a weed warrior! Check out volunteer opportunities with KRCP.
  12. Educate your friends and ohana. Share this page with someone else.
  13. Allow KISC to survey your property. If you think you may have a target invasive species on your property, we can help! Call (808)821-1490.
  14. Become a "Kiai Moku" (Guardian of the Island) by attending an Early Detection workshop. Please contact Tiffani Keanini at for more information. See how Maui's "Report a Pest" program works.

Featured weed of the week

Rubus discolor photo
29 October 2008
Bocconia frutescens photo by Forest and Kim Starr
22 October 2008
Angiopteris evecta photo by Forest and Kim Starr
15 October 2008
Antigonon leptopus photo by Forest and Kim Starr
08 October 2008
Buddleja madagascariensis by Forest and Kim Starr
01 October 2008
24 September 2008
17 September 2008
Glory bush
10 September 2008
Giant reed
03 September 2008
27 August 2008
Long thorn kiawe
20 August 2008
Kahili ginger
13 August 2008
Australian tree fern
06 August 2008
30 July 2008
Grape ivy
23 July 2008
Fountain grass
16 July 2008
09 July 2008
false awa
02 July 2008
miconia 25 June 2008

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