Keeping Hawai`i clean,
green, and beautiful since 1912
THE OUTDOOR CIRCLE
  • Home
  • About Us
    • History of TOC >
      • TOC Presidents
    • TOC Archives
    • TOC Policy Positions
    • Board of Directors
    • TOC In The News
    • Newsletters >
      • The Greenleaf
      • North Shore Outdoor Circle
      • Lani-Kailua Outdoor Circle
      • Waimea Outdoor Circle
      • Greater Waikiki Outdoor Circle
    • Annual Reports, Strategic Plans, and Brochures
    • Events
    • The Online Circle - Environmental Education Blog
    • Contact
  • Programs
    • Exceptional Tree Initiative >
      • Bibliography/Sources
    • Free Tree Giveaways
    • Planting Events
    • ​​Greening Hawaiʻi’s Public Schools
    • ​Lahaina Fire Recovery
    • ​Determining the Public’s Perception of Urban Trees
    • Future Proofing Hawaiʻi’s Urban Forests
    • ​Green and Cool Hawaiʻi
    • ​Historic Trees of Banyan Drive
    • Majesty III - Exceptional Trees of Hawaiʻi Book
    • Reimagining Weed Circle – The Gateway to Haleʻiwa Town
    • ​Coconut Palm Sanctuary
    • "Valuing Trees” University Module
    • Collaborators of Past Outdoor Circle Initiatives >
      • Google Trekker
      • Kailua Citizen Forester Program
      • Carbon Neutrality Challenge
      • ​Walking Tours of the Trees of Greater Waikiki
  • Membership/Donations
    • Membership/Join Us
    • Ways to Give
    • Planned Giving Opportunities
    • Keep Hawaii Beautiful
    • Foodland Give Aloha
    • Volunteer
  • Branches
    • Branches
    • East Hawaii Island
    • East Honolulu
    • Kaneohe
    • Kauai
    • Kona
    • Lani-Kailua
    • Manoa
    • North Shore
    • Waikiki
    • Waikoloa
    • Waimea >
      • Waimea Nature Park Images
  • Trees
    • Tree Information
    • Exceptional Tree Initiative >
      • How to Nominate an Exceptional Tree
      • Exceptional Tree Map
      • Exceptional Tree Library >
        • Bibliography/Sources
      • Exceptional Tree Gallery
      • Tree Mapping - Get Involved!
    • Exceptional Tree Map
    • Christine Snyder
    • Tree Reviews & Inquiries
    • Report a Problem
  • Signage
    • Signage
    • Political Campaign Signage
    • SAVE ANTI-BILLBOARD LAWS
    • Report a Problem
  • Resources
    • Plant Resources
    • Tree Information
    • Signage
    • Development Plans
    • Current Issues >
      • Light Pollution >
        • Environmental Headlines
  • Home
  • About Us
    • History of TOC >
      • TOC Presidents
    • TOC Archives
    • TOC Policy Positions
    • Board of Directors
    • TOC In The News
    • Newsletters >
      • The Greenleaf
      • North Shore Outdoor Circle
      • Lani-Kailua Outdoor Circle
      • Waimea Outdoor Circle
      • Greater Waikiki Outdoor Circle
    • Annual Reports, Strategic Plans, and Brochures
    • Events
    • The Online Circle - Environmental Education Blog
    • Contact
  • Programs
    • Exceptional Tree Initiative >
      • Bibliography/Sources
    • Free Tree Giveaways
    • Planting Events
    • ​​Greening Hawaiʻi’s Public Schools
    • ​Lahaina Fire Recovery
    • ​Determining the Public’s Perception of Urban Trees
    • Future Proofing Hawaiʻi’s Urban Forests
    • ​Green and Cool Hawaiʻi
    • ​Historic Trees of Banyan Drive
    • Majesty III - Exceptional Trees of Hawaiʻi Book
    • Reimagining Weed Circle – The Gateway to Haleʻiwa Town
    • ​Coconut Palm Sanctuary
    • "Valuing Trees” University Module
    • Collaborators of Past Outdoor Circle Initiatives >
      • Google Trekker
      • Kailua Citizen Forester Program
      • Carbon Neutrality Challenge
      • ​Walking Tours of the Trees of Greater Waikiki
  • Membership/Donations
    • Membership/Join Us
    • Ways to Give
    • Planned Giving Opportunities
    • Keep Hawaii Beautiful
    • Foodland Give Aloha
    • Volunteer
  • Branches
    • Branches
    • East Hawaii Island
    • East Honolulu
    • Kaneohe
    • Kauai
    • Kona
    • Lani-Kailua
    • Manoa
    • North Shore
    • Waikiki
    • Waikoloa
    • Waimea >
      • Waimea Nature Park Images
  • Trees
    • Tree Information
    • Exceptional Tree Initiative >
      • How to Nominate an Exceptional Tree
      • Exceptional Tree Map
      • Exceptional Tree Library >
        • Bibliography/Sources
      • Exceptional Tree Gallery
      • Tree Mapping - Get Involved!
    • Exceptional Tree Map
    • Christine Snyder
    • Tree Reviews & Inquiries
    • Report a Problem
  • Signage
    • Signage
    • Political Campaign Signage
    • SAVE ANTI-BILLBOARD LAWS
    • Report a Problem
  • Resources
    • Plant Resources
    • Tree Information
    • Signage
    • Development Plans
    • Current Issues >
      • Light Pollution >
        • Environmental Headlines
Picture

Plant Resources​

HAVE A QUESTION ABOUT A TREE OR PLANT?
Learn Which Trees Are Ideal for Specific Areas
LEARN INTERESTING INFORMATION ABOUT HAWAI‘I'S TREES
Recommendations for New Development: Tree Canopy & Green Infrastructure Standards
Find an Arborist Using the ISA's "Find an Arborist" Database*
*Please note that The Outdoor Circle does not endorse any of the arborists from the ISA link above
​and specifically disclaims any liability or responsibility for any actions or statements made by any individuals listed.*
Use these links to find a wealth of information, helplines, websites and blogs available to help you.
  • Who to call for questions about trees on public property (from City and County of Honolulu)
​           https://www.honolulu.gov/rep/site/dpr/duf_docs/guidelinesfortreeinquiries072011.pdf
  • Identify your tree or plant (from Wildlife of Hawai‘i)
            https://wildlifeofhawaii.com/flowers/category/growth-habit/trees/
  • Useful links to a variety topics, including invasive species, and urban and community forestry resources (State of Hawai‘i, Division of Forestry and Wildlife):
            http://dlnr.hawaii.gov/forestry/lap/kaulunani/links/
  • Informational brochure on how and where to plant trees on your property (from Hawaiian Electric Light Company):
           https://view.hawaiielectriclight.com/planting-the-right-tree-in-the-right-place/page/1
  • ​Useful links and information from tree care professionals in Hawaii (Aloha Arborist Association):
           https://alohaarborist.com/
  • For Kids! A kid's guide to the parts of a flower. Note that several of the links at this site to additional material do not work (in particular, the first four), but most do, and are very informative, fun, and engaging  (from AvasFlowers.net):  ​                                                                                   https://www.avasflowers.net/kids-guide-to-the-parts-of-a-flower
  • Right Tree Hawai‘i Picker:  https://www.righttreehawaii.com
  • Albizia Seedling Identification PSA - Ko‘olau Mountains Watershed Partnership:                                https://www.youtube.com/watch?v=cJqW96rK-3I
        
The following sites are part of the UH College of Tropical Agriculture and Human Resources (CTAHR) Cooperative Extension Service (CE):
  • UH Master Gardeners helplines for plant related questions for all major islands
            https://cms.ctahr.hawaii.edu/uhmgprogram/Helplines
  • Oahu Master Gardeners Helpline
            https://cms.ctahr.hawaii.edu/uhmgprogram/HOME/Oahu
  • Information on Trees in Hawai‘i​
           https://cms.ctahr.hawaii.edu/forestry/Forestry-Agroforestry-Trees
  • Services provided, for example, pest identification, soil analysis
            https://cms.ctahr.hawaii.edu/Services
  • Information on tropical plants, types of soil, rainfall, native species, invasive species
           https://cms.ctahr.hawaii.edu/uhmgprogram/Tropical-Topics

Additional tree resources for Hawaiian plants, disease prevention, maintenance and more!
  • Native Plants Hawai‘i
           http://nativeplants.hawaii.edu
  • ​Tree Protection - Collection of Resources
​           https://www.wirefence.co.uk/tree-protection
  • ​​How to identify a tree species in Hawai‘i
​           http://ufei.calpoly.edu/pacificislands/​
Sources: Lani-Kailua Outdoor Circle, 2020

Donate to The Outdoor Circle
All information on this website is the property of The Outdoor Circle and may not be used without written consent.
Copyright © 2026 The Outdoor Circle. All Rights Reserved.
The Outdoor Circle
1314 South King Street, Suite 306
Honolulu, HI 96814
Tel: 808-593-0300
[email protected]