• Wednesday, May 27

    Small Ornamental Trees
    Longenecker Horticultural Gardens Tour

    7 p.m. – 8:30 p.m.

    This tour, led by Eileen Nelson, UW Dept. of Horticulture, will highlight some of the Arboretum’s interesting and unusual ornamental small trees.

  • Sunday, May 31

    Early Summer on the Grady Oak Savannas and Greene Prairie
    Walk

    1 p.m. – 3 p.m.

    Explore the mosaic of grasses dotted with color from phlox, blue-eyed grass, yellow star grass and up to 30 other species in the Grady Tract.

  • Tuesday, June 2

    Emerald Ash Borer Treatment Demonstration
    Special Event

    10 a.m. – 11:30 a.m.

    Briana Frank, from Tree Health Management, will present an educational session about how to identify if a tree has the Emerald Ash Borer and determine if it is a candidate for treatment. She will demonstrate treatment of two Arboretum ash trees in Longenecker Gardens using TreeAzin, manufactured by Bio Forest. A company representative will also attend to take questions.

  • Wednesday, June 3

    Shade Trees
    Longenecker Horticultural Gardens Tour

    7 p.m.

    Laura Wyatt, from the UW Lakeshore Nature Preserve, will lead the tour through the Gardens’ extensive collection of larger trees and discuss strategies for growing healthy trees in urban/suburban conditions.

  • Saturday, June 6

    Ecological Restoration Work Party
    Wingra Oak Savanna

    9 a.m. – 12 p.m.

    Volunteer for restoration activities and learn about prairies and savannas. Tools and training provided. Groups welcome with advance notice. Meet at Arbor Drive parking lot, off Monroe Street. For more information: 265-5214 or marian.farrior@wisc.edu.

  • Saturday, June 6

    By the Dark of the Moon
    Night Walk

    8:30 p.m. – 10 p.m.

    We will walk at twilight to enjoy evening sights and sounds, then look and listen for wildlife after dark.

  • Sunday, June 7

    Exploring Curtis and Teal Pond Wetlands
    Walk

    1 p.m. – 3 p.m.

    Learn how these wetlands have been affected by urbanization as well as ecological restoration, and discover the wildlife habitat they provide.

  • Wednesday, June 10

    Woodland, Savanna and Prairie Gardens
    Native Plant Garden Tour

    7 p.m.

    Celebrate the beginning of summer by visiting the woodland, savanna, and prairie garden areas in an overview of the Wisconsin Native Plant Garden.

  • Saturday, June 13

    Ecological Restoration Work Party
    Core Area and Curtis Prairie

    9 a.m. – 12 p.m.

    Volunteer for restoration activities and learn about prairies and savannas. Tools and training provided. Groups welcome with advance notice. Meet at the Visitor Center. For more information: 265-5214 or marian.farrior@wisc.edu.

  • Saturday, June 13

    Vision at the Arboretum
    Sight in Flight

    9:30 a.m. – 11:30 a.m.

    Learn how vision works for butterflies, moths, and bees in their prairie environment. Experts from the UW–Madison McPherson Eye Research Institute will discuss complex and simple eyes in insects and explain how insects are used as a model for studying the human eye and eye diseases. Hear from "Bug Guy" PJ Liesch, check out a Butterfly Birthing Station and other displays. Light refreshments and a prairie walk will follow. Preregistration preferred, opens May 15.

  • Sunday, June 14

    Greene Prairie
    Walk

    1 p.m. – 3 p.m.

    Explore Greene Prairie’s mosaic of grasses dotted with color from phlox, blue-eyed grass, yellow star grass, and up to 30 other species.

  • Sunday, June 14

    Who’s That Buzzing in Your Ear?
    Family Walk

    1:30 p.m. – 2:30 p.m.

    Discover the fun and fascinating world of insects on a walk designed for families.

  • Wednesday, June 17

    What’s Blooming?
    Native Plant Garden Tour

    7 p.m.

    Find, compare, and learn about flowers on native trees, shrubs, and herbaceous plants native to southern Wisconsin.

  • Saturday, June 20

    Ecological Restoration Work Party
    Grady Tract

    9 a.m. – 12 p.m.

    Volunteer for restoration activities and learn about prairies and savannas. Tools and training provided. Groups welcome with advance notice. Meet at Grady Tract parking lot, southeast corner of Seminole Hwy. and W. Beltline Frontage Road. For more information: 265-5214 or marian.farrior@wisc.edu.

  • Sunday, June 21

    Curtis Prairie
    Walk

    1 p.m. – 2:30 p.m.

    Explore Curtis Prairie and adjacent restorations, featuring the first restored prairie in the world.

  • Sunday, June 21

    Summer Solstice
    Night Walk

    8:30 p.m. – 10 p.m.

    Enjoy sunset on the longest day of the year. The naturalist will point out interesting features that may not be apparent to the casual observer.

  • Saturday, June 27

    Ecological Restoration Work Party
    Core Area and Curtis Prairie

    9 a.m. – 12 p.m.

    Volunteer for restoration activities and learn about prairies and savannas. Tools and training provided. Groups welcome with advance notice. Meet at the Visitor Center. For more information: 265-5214 or marian.farrior@wisc.edu.

  • Sunday, June 28

    The World Underground
    Earth Partnership for Families

    12:30 p.m. – 3:30 p.m.

    Indoor drop-in activities will explore hidden secrets of roots, fungus, ants, and worms in the soil under your feet. Naturalist-led hike, 1:30–2:30 p.m.

  • Sunday, June 28

    Prairies and Savannas on the Grady Tract
    Walk

    1 p.m. – 3 p.m.

    On a warm sunny day, you may see many species of butterflies in the prairie and savannas. Meet at the Grady Tract parking lot, southeast corner of Seminole Hwy. and W. Beltline Frontage Road.

  • Sunday, July 5

    Curtis Prairie
    Walk

    1 p.m. – 2:30 p.m.

    As many as 14 new species come into bloom each week, and 28 new species may be blooming since the walk two weeks earlier.

  • Wednesday, July 8

    Summer Highlights
    Longenecker Horticultural Gardens Tour

    7 p.m.

    Led by Jeff Epping, director of horticulture at Olbrich Gardens, this tour will include summer flowering cultivars.

  • Saturday, July 11

    Ecological Restoration Work Party
    Core Area and Curtis Prairie

    9 a.m. – 12 p.m.

    Volunteer for restoration activities and learn about prairies and savannas. Tools and training provided. Groups welcome with advance notice. Meet at the Visitor Center. For more information: 265-5214 or marian.farrior@wisc.edu.

  • Sunday, July 12

    Prairies and Savannas on the Grady Tract
    Walk

    1 p.m. – 3 p.m.

    If it is a warm, sunny day, you may see many species of butterflies throughout the prairie and savannas. Meet at Grady Tract parking lot, southeast corner of Seminole Hwy. and W. Beltline Frontage Road.

  • Sunday, July 12

    Butterflies Flutter By
    Family Walk

    1:30 p.m. – 2:30 p.m.

    This naturalist-led family walk explores the prairies and gardens looking for beautiful native butterflies.

  • Wednesday, July 15

    Native Gardens for Pollinators
    Native Plant Garden Tour

    7 p.m.

    This tour will feature summer-blooming species and highlight plants and gardening practices that support essential pollinators in urban/suburban landscapes.

  • Saturday, July 18

    Ecological Restoration Work Party
    Grady Tract

    9 a.m. – 12 p.m.

    Volunteer for restoration activities and learn about prairies and savannas. Tools and training provided. Groups welcome with advance notice. Meet at Grady Tract parking lot, southeast corner of Seminole Hwy. and W. Beltline Frontage Road. For more information: 265-5214 or marian.farrior@wisc.edu.

  • Sunday, July 19

    A Prairie Birthday
    Walk

    1 p.m. – 2:30 p.m.

    We will walk the trails of Curtis Prairie to see blazing stars, prairie grasses, and many sunflower species in bloom.

  • Saturday, July 25

    Ecological Restoration Work Party
    Core Area and Curtis Prairie

    9 a.m. – 12 p.m.

    Volunteer for restoration activities and learn about prairies and savannas. Tools and training provided. Groups welcome with advance notice. Meet at the Visitor Center. For more information: 265-5214 or marian.farrior@wisc.edu.

  • Sunday, July 26

    Squirrel Day
    Special Event

    12:30 p.m. – 2:30 p.m.

    Learn about squirrels and how to participate in the Squirrel Mapper citizen science project. Presenter: Alyse Krueger, research assistant, Zukerberg Climate Change Ecology Lab at UW–Madison Department of Forest and Wildlife Ecology.

  • Sunday, July 26

    Greene Prairie and Grady Knolls
    Walk

    1 p.m. – 3 p.m.

    Prairie dock is prolific on Greene Prairie. Its bright-yellow blooms and broad, rough leaves dominate the vista. A closer look brings dozens of other species into view. Meet at Grady Tract parking lot, southeast corner of Seminole Hwy. and W. Beltline Frontage Road.

  • Sunday, September 20

    Native by Design: Gardening for a Sustainable Future
    Native Gardening Conference 2015

    8:45 a.m. – 4:30 p.m.

    Using the Arboretum's Native Plant Garden as an outdoor classroom, this one-day conference offers workshops, take-home tips, & living examples to help you develop, maintain, & improve a native plant garden. Keynote: "Wild Gardening with Art and Purposefulness," Nancy Aten from Landscapes of Place, LLC. Registration required by Sept. 10.