trees

within 25 miles

Apr 25, 2026

Near

Distance

From

Until

121 opportunities found! use fewer search filter criteria to find more opportunities

Filters

Activity Type

Age

Kids Friendly Only

21+ Only

Participant Age Range Minimum

100

Participant Age Range Maximum

100

Cost

Any Cost Free Only

Topic

Venue Type

Host Organization

Partner Organization

University of Freiburg

3Dtrees.earth

Collect data and tools for LiDAR-based forest monitoring

Anywhere

Ongoing

Citizen ScienceEcology & EnvironmentGeographyComputers & Technologydronesmonitoringremote sensingscanningforestlidarinventorycomputer vision

Ancient Tree Inventory

To build a living database of ancient trees

Multiple locations, including yours!

Ongoing

Citizen ScienceEcology & EnvironmentNature & OutdoorsBiologytrees, united kingdom

2B Technologies, Inc.

AQTreks (AirQualityTreks)

Monitor air pollution levels and map air pollution around the US

Multiple locations, including yours!

Ongoing

Citizen ScienceNature & OutdoorsGeographyEducationCrowd FundingTransportationEcology & EnvironmentComputers & TechnologyClimate & WeatherChemistryOcean Water Marineclimateequityenvironmentair pollution monitoringexperimentclimate monitoringparticulate matterappglobal warmingdatabasehikingweatherdataweather datainvestigationec2020autumnnaturecommunity-based monitoringstemcarbon monoxidewinterscienceairair quality indexspringair pollutionsmartphone applicationenvironmental justicebicyclingiphonecitizen scienceandroidsummercarbon dioxideusaclimate changeair qualitygirl scoutsmobile applicationoutdoors

Arizona State Parks & Trails

Arizona State Parks & Trails: Ethnobotany Guided Hike at Red Rock

Red Rock State Park Arizona

April 26, 2026 at 7:00 AM

CommunityGeneral Science

Arizona State Parks & Trails

Arizona State Parks & Trails: Picnic with the Pendleys

Slide Rock State Park Arizona

Ongoing through April 26, 2026 at 6:59 AM

CommunityGeneral Science

NC State University | ecoipm.org | YourWildLife.org

A Tree's Life

To learn how climate & urbanization affect tree growth & health

Multiple locations, including yours!

Ongoing

Citizen ScienceBiologyEducationClimate & WeatherNature & OutdoorsEcology & Environmentcarbon sequestrationclimate changeurban ecologytrees

Cornell University/New York Department of Environmental Conservation

AVID (Assessing Vegetation Impacts from Deer)

Monitor the effects of deer browsing on woodland trees and plants

Multiple locations, including yours!

Ongoing through November 30, 2030 at 8:35 PM

Citizen ScienceAnimalsEcology & EnvironmentNature & Outdoorsforest healthforesttreeswoodlandsseedlingswildlifewildflowersdeerecology

Airigami

Balloon Breakdown

Help compost 40,000 latex balloons

Multiple locations, including yours!

Ongoing

Citizen ScienceEcology & Environmentballoonsballooncompostingcompost

Northern Rivers Fire and Biodiversity Consortium Inc.

Bell Miner Associated Dieback Best Practice Project

Evaluate the removal of mid-storey density in disturbed forests using prescribed fire, weed control and bush regeneration as a method to restore BMAD affected forest.

Anywhere

Ongoing

Citizen ScienceEducationEcology & EnvironmentBirds treesbird monitoringaustraliagondwana world heritage birdstree health across the northern rivers region of new south wales biodiversitybmad affected forestlocations of native bell miner coloniesbell miner associated dieback (bmad)landholdersdata

Boyce Thompson Arboretum

Boyce Thompson Arboretum: Arbor Day

Boyce Thompson Arboretum Arizona

Ongoing through April 26, 2026 at 6:59 AM

CommunityGeneral Science

12 3 4 5…

Share Your Results

Share the list by copying the link below

Copy Link