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Ongoing

Maricopa County Parks and Recreation: McDowell – Invasive Species Removal

McDowell Mountain Regional Park 16300 McDowell Mountain Park Dr. MMRP, Fountain Hills

Desert Defender volunteers needed! Join us in removing invasive species and reducing the wildfire risk in Maricopa County Regional Parks. Participants will learn to identify several invasive species, their phenology...

Free with Park Fee

Maricopa County Parks and Recreation: Cave Creek – Invasive Species Removal

Cave Creek Regional Park 37900 E. Cave Creek Pkwy., Cave Creek

Desert Defender volunteers needed! Join us in removing invasive species and reducing the wildfire risk in Maricopa County Regional Parks. Update 04-10-2026 - “This event is changing to a native seed harvest event. Although we may pull a few weeds, we will mainly focus on harvesting native seed at the native seed garden.  We will...

Free with Park Fee

Watershed Management: River Run Network Restoration Workshop: Tanque Verde Arundo Removal

Tanque Verde Creek/Wentworth Rd. Tucson

Join our community effort to restore Tanque Verde Creek! We invite people of all ages, diverse ethnic and racial backgrounds, beliefs, and many other diverse communities to participate in restoring our heritage of seasonal and year-round water flows. Come work with WMG staff and other River Run Network volunteers at these workshops in a beautiful riparian area to...

Free

Verde Valley Birding and Nature Festival: Botanical Walk – Lime Kiln Trail

Dead Horse Ranch State Park Dead Horse Ranch State Park, Cottonwood

This plant walk will follow the Limekiln Trail via the Connector Trail from Middle Lagoon, and heading east out of the State Park boundary into the USFS designated Verde Valley Botanical Area. The Verde Valley Botanical Area was established to help protect the Arizona Cliffrose (Purshia subintegra), a federally listed endangered species endemic to central...

$25

Rio Salado Audubon Center: Nature Explorers

Nina Mason Pulliam Rio Salado Audubon Center 3131 S. Central Ave., Phoenix

Join us for a fun, family-friendly nature adventure at the Rio Salado Audubon Center! Families are invited to get outside, explore the trails and gardens, and discover wildlife that calls...

Free

Tucson Botanical Gardens: Mushroom Cultivation Workshop

Tucson Botanical Gardens 2150 N. Alvernon Way, Tucson

In this 2-hour workshop instructor Chad Borseth will discuss the role fungi and mushrooms play in our ecology and go over cultivation and propagation techniques. We also will discuss the...

$32 – $40

Arizona State Parks and Trails: Daily Guided Nature Hikes at Red Rock

Red Rock State Park 4050 Red Rock Loop Rd., Sedona

Every morning, a volunteer naturalist leads a guided nature walk informing visitors about the different life zones of Red Rock State Park. The subjects discussed on this walk may include geology, wildlife, history, archeology, and plant life. The naturalists welcome questions during the walk, enhancing the learning experience. Hikes are included with park entrance fees...

Free with Park Fee

Boyce Thompson Arboretum: Arbor Day

Boyce Thompson Arboretum 37615 E. Arboretum Way, Superior

Join us at Boyce Thompson Arboretum for our third annual Arbor Day Celebration as we honor and celebrate the amazing world of trees! Families can enjoy a variety of tree-themed activities, hands-on crafts, and nature fun throughout the day. Girl Scouts who attend will earn the requirements for the Tree Promise Patch. The patch can...

Free with Admission

Arizona State Parks & Trails: Picnic with the Pendleys

Slide Rock State Park 6871 AZ-89A, Sedona

Join us for a fun spring event to learn more about the Friends of Slide Rock State Park and see the beautiful apple tree blossoms! Hear from a ranger about the historic orchards and the cycle of apples. At 10 a.m., there will be a ranger-led walk through the orchard. At 11 a.m., Kathy Pendley...

Free with Park Fee

Maricopa County Library District: Ask a Master Gardener Table

MCLDAZ - White Tank Library 20304 W. White Tank Mountain Rd., Waddell

Master Gardener volunteers will be available to answer your desert gardening questions, including but not limited to plant selection, irrigation, fertilization, pruning techniques, pest management and problem diagnosis.

Free