50th Anniversary Celebration of O'ahu's Exceptional Tree Program
2025-05-31 09:30 - 12:00 (Pacific/Honolulu) | Foster Botanical Garden, 50 N Vineyard Blvd, Honolulu, HI, United States
Hawai’i’s Exceptional Tree initiative became law in May 1975 and is designed to identify, recognize, and protect Hawai’i’s most iconic trees.
Please join The City & County of Honolulu Mayor’s Arborist Advisory Committee for a celebration of this monumental milestone. Free admission will be provided to Foster Botanical Garden. Free parking is available on site.
9:00 AM- 10:00 AM Arrival and Welcome
10:00 AM-10:30 AM Exceptional Tree Program Presentation
10:30 AM-11:30 AM Exceptional Tree Tour
11 :30 AM -12:00 PM Exceptional Tree Nomination Workshop
While reservations are not necessary, to reserve a spot on the 10:30 a.m. tours email HBG@honolulu.gov to ensure availability as the tours are capacity constrained.

Hamakua Marsh Wildlife Sanctuary Forest Restoration
2025-06-02 16:00 - 18:00, 2025-06-09 16:00 - 18:00, 2025-06-16 16:00 - 18:00, 2025-06-23 16:00 - 18:00, 2025-06-30 16:00 - 18:00, 2025-07-07 16:00 - 18:00, 2025-07-14 16:00 - 18:00, 2025-07-21 16:00 - 18:00 and 3 more dates | 268 Hamakua Dr, Kailua, HI, United States
Except holidays and storms – drop in to help mālama the native community forestry planted on the watershed. Wear covered shoes and bring a water bottle. Drive through the open gate immediately adjacent to 268 Hamakua Drive, Kailua 96734 and park inside.
All welcome. Organized by Healthy Climate Communities.
Questions? Contact info@healthyclimatecommunities.org

Founder’s Day
2025-06-14 10:00 - 12:00 | Victoria Ward Park, 1020 Auahi St, Honolulu, HI, United States
Come celebrate Ward Village’s 5th Annual Founder’s Day at Victoria Ward Park Makai! This annual family-friendly event celebrates founding visionary and steward Victoria Ward featuring an array of nature based educational activities, including from Trees for Honolulu’s Future.
For more info: https://www.wardvillage.com/explore/activities/founders-day/

Conservation Service - Native Plant Restoration at Wāwāmalu Beach
2025-06-15 09:00 - 12:00, 2025-07-20 09:00 - 12:00 | Sandy Beach Park Fishing, 6241 Kalanianaole Hwy, Honolulu, HI, United States
Conservation service led by Sierra Club O`ahu Group. Repairing damage by decades of off-roading. Planting costal natives and removing invasives.
Limited to 24 attendee/volunteers. Help return Wawamalu Beach to its native/natural state after years of off-road abuse and inattention. Natives planting, seed collection and sowing, as well as removal of invasive plants on tap. Personal pickaxes welcome and encouraged. Work gloves provided. Interpretation of course. Bring flask, cool water refill available.
Signup Instructions: Contact Reese Liggett, reservation required from Reese at wliggett@twc.com. Limited to 24 participants due to fragile nature of plant regeneration.
Bring: Closed-toe shoes/boots. Gardening .gloves, sunscreen and water flask (iced refill available, no plastic water available). Pick ax and power saw welcome
Signup Restrictions: Limited to 24 volunteers/attendees. Must have confirmed reservation from Reese at wliggett@twc.com. Must be 18 years old or accompanied.

Community Crop Swap!
2025-06-15 16:00 - 16:30 | Pālolo Valley District Park, 2007 Palolo Ave, Honolulu, HI, United States
Share your homegrown produce and connect with neighborhood friends and gardeners. On the 15th of each month at the stroke of 4 pm.
Location – next to Rec Center – click here for map. For more information call Kaleo at 808-724-2677.

Kuli`ou`ou Ridge Trail Restoration: Aloha Tree Alliance
2025-06-21 08:00 - 11:30, 2025-07-19 08:00 - 11:30 | Kuliouou Ridge Trail, 120 Kuliouou Rd, Honolulu, HI, United States
About the Project
The Kuli'ou'ou Ridge Trail is in desperate need of restoration. One of the most beautiful hiking trails in east O'ahu, Kuli'ou'ou valley is a beautiful watershed that once boasted of native trees, shrubs, plants, birds and snails. Today because of overuse and misuse, switchbacks have been deeply cut, killing trees, plants and causing erosion that eventually kills coral and damages Maunalua Bay.
Come out to one of Aloha Tree Alliance's work days held on the third Saturday of every month and learn how to remove invasive species, plant native plants and become a steward of the land!
RSVP HEREQuestions? Contact info@alohatreealliance.org

Diamond Head State Monument: Trees for Kaimuki
2025-06-21 09:00 - 12:00, 2025-07-19 09:00 - 12:00
For more information and sign-up, please email: MyTree@treesforhonolulu.org
Join Diamond Head State Monument and Trees for Kaimuki to help keep the trees and other native plants at Fort Ruger Path happy and healthy. This includes mulching trees, pulling weeds and trimming up the tree canopy.
This event occurs every third Saturday of each month from 9 am to about 12 am.
Bring shoes, long pants, long sleeved shirt, sunscreen, reusable water bottle, a hat, and a positive attitude.
Tools, gloves, ice water and snacks will be provided.

Shower Tree Festival - walking tour (registration link below)
2025-06-28 10:00 - 12:00 | Hawaii Imin International Conference Center at Jefferson Hall, 1711 E West Rd, Honolulu, HI, United States
Sponsored by Friends of Honolulu Botanical Gardens & The Outdoor Circle
Join Roxanne Adams, Division of Urban Forestry, C&C of Honolulu for a tour of the shower trees on UH Campus. Bring your own bag lunch to picnic after the tour, with an activity showing ways to use shower tree blossoms.
Also bring a hat, water, and good walking shoes. Event is FREE, but please register on Eventbrite: http://tiny.cc/showertree

Ola Nā Kini -- Leeward O'ahu restoration efforts
2025-07-12 09:00 - 12:00, 2025-08-09 09:00 - 12:00 | various – must register, see below for link
Join Mālama Learning Center as together we strive to heal the land & sea through restoration efforts in Leeward Oʻahu.
https://signup.com/go/yqimhEk
This link includes a general description of MLC’s Laulima Workday events. You’ll also find individual event dates with details specific to each month’s location. NOTE: registration typically opens/unlocks about a month before each event date.

Community Crop Swap
2025-07-15 16:00 - 16:30 | Pālolo Valley District Park, 2007 Palolo Ave, Honolulu, HI, United States

A Midsummer Night’s Gleam
2025-07-19 15:00 - 21:00 | Foster Botanical Garden, 50 N Vineyard Blvd, Honolulu, HI, United States
Friends of Honolulu Botanical Gardens, 808-537-1708 or friendsofhbg@gmail.com
Price: $3 for adults (18+) and $1 for children ages 6-17. Children ages 0-5 are free.
The Honolulu Botanical Gardens team is excited to once again host A Midsummer Night’s Gleam, an enchanting evening of family fun, dazzling lights, and lively performances in Honolulu’s oldest botanical garden!
Event Highlights: 3:00 PM – 6:00 PM: Live music, theatrical acts, nature crafts, bubble fun, and a photo op with a giant snail! Sunset – 9:00 PM: Thousands of lights and luminaries light up the garden, with performances continuing into the night. Enjoy a delicious variety of food trucks, or bring your own picnic (non-alcoholic drinks only).

Niu Forever - Movie (Free, link to register below)
2025-07-26 18:00 - 19:30 | Native Books at Arts & Letters, 1164 Nuuanu Ave, Honolulu, HI, United States
https://www.niuforeverfilm.com/

Annual Unthirsty Plant Sale
2025-08-02 09:00 - 13:00 | 1268 Iwaena St, Aiea, HI, United States
An abundance of drought-resistant plants awaits plant lovers looking for just the right plant to brighten their lanai, adorn their yards, or dress up their windows. Presented by our friends at the Board of Water Supply. Admission is free. Park on Iwaena Street and catch a free shuttle to the garden.
Meandering through a three-acre garden, a lush oasis nestled in Hālawa Valley’s Central Park and browsing through the tables and tables of unique plants that can thrive with little water is a fun, educational experience for the entire family.
For more info including time and subjects of workshops plus a list of exhibiters: https://www.boardofwatersupply.com/conservation/community-events/plantsale2025

Planting Futures: Kumulāʻau Pau Hana by Sierra Club of Hawai'i (RSVP, details below)
2025-08-08 16:00 - 19:00 | Smith & Kings, 69 N King St, Honolulu, HI, United States
Celebrate the Year of Community Trees with the Sierra Club at a special pau hana at Smith & Kings! Come unwind after work, meet fellow supporters, and join in the fun as we play the Kumulāʻau Tree Card Game with one of the games creators joining us for the evening. Throughout the night, you’ll have the chance to win native and edible plants as prizes for game winners and other activities. Pupus on us, and drinks and additional food will be available for purchase (happy hour from 3-6pm).
Games will also be available for purchase, with proceeds directly supporting the Sierra Club of Hawaii’s work to protect our islands. Bring your friends and enjoy a night of great conversation, friendly competition, and community connection all while helping to grow a greener Hawaii. RSVP today and we’ll save you a seat!

Joy to the Trees - FREE book readings by two young authors
2025-08-09 10:00 - 10:45 | Foster Botanical Garden, 50 N Vineyard Blvd, Honolulu, HI, United States
Sponsored by Trees for Honolulu’s Future & Friends of Honolulu Botanical Gardens. Please respond to friendsofhbg@gmail.com with number of people attending so we can plan accordingly. Exact same session repeats at 11:00 am.
For more on the authors and their books click here.

Joy to the Trees - FREE book readings by two young authors
2025-08-09 11:00 - 11:45 | Foster Botanical Garden, 50 N Vineyard Blvd, Honolulu, HI, United States
Sponsored by Trees for Honolulu’s Future & Friends of Honolulu Botanical Gardens. Please respond to friendsofhbg@gmail.com with number of people attending so we can plan accordingly. This is the repeat of the 10 am session.

For more on the authors and their books click here.
