Barrows Conservation Lecture Series: Since 1993, the series has brought a slate of esteemed naturalists and scientists to Cincinnati to address wildlife issues and global conservation efforts. The Cincinnati Zoo’s Barrows Conservation Lecture Series features a talk with Pratik Patel, founder and chairman of the African Wildlife Trust, to discuss blood ivory and the elephant poaching crisis. The African Wildlife Trust aims to save African elephants. 7 p.m. $14; $12 zoo members. Cincinnati Zoo, 3400 Vine St., Avondale, cincinnatizoo.org.
Bee Yard Maintenance Day: Head to Gorman Heritage Farm to work in the bee yard. 1-2:30 p.m. Free. Gorman Heritage Farm, 10052 Reading Road, Evendale, gormanfarm.org.
Butterflies of the Philippines: Krohn Conservatory’s annual international butterfly show features the butterflies of the Philippines, including the plants, flowers and other exhibits that showcase Filipino culture. Through June 21. $7 adults; $4 children. Krohn Conservatory, 1501 Eden Park Drive, Eden Park, cincinnatiparks.com/krohn.
Cincinnati Flower Show: The Cincinnati Horticultural Society hosts this floral show, with landscaping, flower and garden displays from the region’s most talented professionals and amateurs. There will also be dramatic floral table settings, urban gardening displays, informational presentations from the Cincinnati Zoo and more. Through April 19. $20 general admission; individual events ticketed separately. Yeatman’s Cove, Sawyer Point, 700 E. Pete Rose Way, Downtown, cincinnatihorticulturalsociety.com.
Zoo Blooms: The zoo’s annual floral show has one of the largest tulip displays in the Midwest. Every Thursday night in April is Tunes & Blooms, after-hours concerts at the zoo (6-8:30 p.m.; free admission). Through April. $18 adult; $12 children/seniors: $9 parking. Cincinnati Zoo, 3400 Vine St., Avondale, cincinnatizoo.org.
Raised Garden Bed Class: This class at Turner Farm, an organic farm in Indian Hill, teaches the public how to build a wood-frame raised garden bed to grow fruits and vegetables. Learn to choose the correct lumber, soil mix, how to build healthy soil and other basics. 6:30-8 p.m. $15. Turner Farm, 7400 Given Road, Indian Hill, turnerfarm.org.
Mill Creek Cleanup: The Mill Creek Yacht Club hosts the 21st annual Mill Creek Cleanup at Reading & Lockland Stream. Please wear waterproof boots or hip waders and prepare to get muddy. 9:30 a.m.-1 p.m. Free. Koenig Park, 520 W. Columbia Ave., Reading, greenumbrella.org.
Native Plant Sale: The Cincinnati Nature Center features a large assortment of locally grown native plants for sale, including nectaring plants for butterflies, native edible plants, plants for birds and more. Through June 30. Free. Cincinnati Nature Center, 4949 Tealtown Road, Milford, cincynature.org.
Wildflower Festival: The ninth annual Wildflower Festival features family-friendly events, including nature games, a wildflower plant sale, handcrafted items for sale and displays from local environmental organizations. Hosted by the Western Wildlife Corridor, the goal is to increase wildflower awareness and support the wooded hillside habitat of the Ohio River corridor. 6-9 p.m. Free. Mt. St. Joseph University Harrington Student Center, 5701 Delhi Road, Delhi, westernwildlifecorridor.org.
An Introduction to Bird Watching: This introduction to bird watching explores the importance of features and skeletal systems of birds to discuss bird morphology and color. Also learn about several popular field guides and apps to assist with successful bird watching. The session concludes with a field-trip around Gorman Heritage Farm to identify local resident and wintering birds by sight and sound. 9-11 a.m. $10. Gorman Heritage Farm, 10052 Reading Road, Evendale, gormanfarm.org.
Adult Workshop: Earthy Wild Edibles: Learn about local edibles, and indulge in some tasteful samples and recipe ideas, followed by a hike. 2 p.m. $15. Woodland Mound/Seasongood Nature Center, 8250 Old Kellogg Road, Beechmont, greatparks.org.
Cincinnati Earth Day: Features a drum circle from Miami Valley Council for Native Americans, kid’s zones, live music, recycled costume contest, lecture series, parade with mascots, an animal showcase and more. Noon-5 p.m. Free. Sawyer Point, 700 E. Pete Rose Way, Downtown, cincinnatiearthday.com.
Creating Sustainable Communities: Imago brings Intentional Community expert Diana Leafe Christian to lead two seminars on how healthy sustainable communities govern and make decisions. 9 a.m.-5:30 p.m. Free. Imago Earth Center, 700 Enright Ave., Price Hill, imagoearth.org.
Earth Day at Cincinnati Nature Center: Explore the trails and trailside stations at the Cincinnati Nature Center during hikes, and view screenings of Flight of the Butterflies. Free admission Saturday, April 18; Sunday, April 19; and Wednesday, April 22. Cincinnati Nature Center, 4949 Tealtown Road, Milford, cincynature.org.
Earth Days: River Messengers: This series of green events at Washington Park teaches kids how to evaluate the health of the Ohio River by looking at fish and invertebrate populations. Kids will have the opportunity to get up close to river wildlife and learn to build their own personal hydroponic system with a two-liter bottle. Noon-1 p.m. Free. Washington Park, 1230 Elm St., Over-the-Rhine, washingtonpark.org.
EcoSculpt at Washington Park: The annual art installation features original sculptures made of recycled and or recyclable material in celebration of Earth Day. Awards on April 22. Through April 24. Free. Washington Park, 1230 Elm St., Over-the-Rhine, washingtonpark.org.
Backyard Beekeeping: Farbach-Werner Nature Preserve naturalists teach you the ancient art of beekeeping, including the tools used for modern honey production and pollination of fruits and vegetables. 1 p.m. Free. Farbach-Werner Nature Preserve, 3455 Poole Road, Colerain, greatparks.org.
Clifton Clean Up: LEAP (Leaders for Environmental Awareness and Protection at the University of Cincinnati) is hosting a Clifton clean up in Burnet Woods. 11 a.m.-2 p.m. Free. Burnet Woods, 3251 Brookline Ave., Clifton, uc.edu/groups/leap.
Where the Wild Things Play: Rain: Kids celebrate rain with watercolor activities. 1-3 p.m. Free. Washington Park, 1230 Elm St., Over-the-Rhine, washingtonpark.org.
Wildflower Wonders: Take a leisurely wildflower walk along Miami-Whitewater Forest and learn about the wildflowers growing along the trails. 2 p.m. Free. Miami-Whitewater Forest, 9001 Mount Hope Road, Harrison, greatparks.org.
The Hemp Revolution Screening: This documentary tracks the history of hemp, advocating for legalization, as well as exhibiting what hemp is good for besides smoking. Screened as part of UC’s sustainability series. 7:30 p.m. Free. MainStreet Cinema, 220 Tangeman University Center, University of Cincinnati campus, Clifton Heights, uc.edu.
Cincinnati Nature Center Milkweed Giveaway: The Cincinnati Nature Center, a partner in the national Monarch Joint Venture, hosts a milkweed giveaway. In the last 20 years, the monarch population has declined 97 percent. They travel from warm climates to the Midwest in the spring and will search for milkweed on which to lay their eggs on their way. Giveaway all day. Free. Cincinnati Nature Center, 4949 Tealtown Road, Milford, cincynature.org.
Earth Day at Krohn Conservatory: The first 300 visitors receive a free tree seedling. 10 a.m.-2 p.m. $7 adults; $4 children. Krohn Conservatory, 1501 Eden Park Drive, Eden Park, cincinnatiparks.com.
Gardening with Deer: Participants will learn the ins and outs of how to garden with deer, not against them. Specific attention will be given to deer-proof ornamental plants and strategies for keeping deer out of vegetable gardens. 6-8 p.m. $10. Civic Garden Center, 2715 Reading Road, Avondale, civicgardencenter.org.
Planetary Screening at the Esquire Theatre: A special Earth Day screening of the documentary Planetary, a “cross-continental cinematic journey that asks us to reconsider our relationship with ourselves, each other and the world around us.” 7:30 p.m. $9.75; $7 child/seniors; $7.50 student. Esquire Theatre, 320 Ludlow Ave., Clifton, 513-281-8750, esquiretheatre.com.
The Mercer OTR Eco-Friendly Wine Tasting: Themed red and white flights, with a cheese plate. This week celebrates Earth Day with an eco-friendly tasting. 4-11 p.m. Prices vary. The Mercer OTR, 1324 Vine St., Over-the-Rhine, facebook.com/themercerotr.
Sierra Club Wild and Scenic International Film Festival: Celebrate the wilderness and wild waterways through film, with recycled art, raffle baskets, Sierra Club membership opportunities and informative speakers. 6 p.m. $15; $20 at door. Aveda Fredric’s Institute, 7664 Voice of American Centre Drive, West Chester, miamigroup.org.
Party for the Planet: The greenest zoo in America celebrates Earth Day with their sixth annual Party for the Planet. Businesses and organizations from around the region will be on hand to share their expertise and resources about living more sustainably. Topics include solar energy, composting, recycling, energy efficiency, green building, rain barrels, sustainable food, green products and more. Also bid on your favorite artfully decorated rain barrel during a silent auction. 4-8:30 p.m. Cincinnati Zoo, 3400 Vine St., Avondale, cincinnatizoo.org.
Dogwood Dash: A run/walk 5K at the Boone County Arboretum. 9 a.m. $20-$30 registration. 9190 Camp Ernst Road, Union, Ky., bcarboretum.org/DogwoodDash.aspx.
Earth Day Tree Planting at Winton Woods: Plant at tree at Winton Woods to help Taking Roots commitment of planting 60,000 trees by 2016. 9 a.m.-noon. Free. Winton Woods, 10245 Winton Road, Greenhills, greatparks.org.
Spring Nature Hike: Hike 2.5 miles through the Northern Kentucky Mitigation Bank site in Campbell County, developed as an Eagle Scout Project. Meets at Alexandria Park and Ride. 9 a.m.-12:30 p.m. Free. US 27, Alexandria, Ky., RSVP to 859-635-9587, campbellconservancy.org.
Barrels of Fun Rain Barrel Workshop: Learn to assemble a rain barrel from recycled materials, personalize it with paint and install a diverter on your gutter to catch the runoff from your home. 1-4 p.m. $65. Greenacres Arts Center, 8400 Blome Road, Indian Hill, green-acres.org.
Where the Wild Things Play: Earth: Kids celebrate Earth Day (a little late) with some homemade clay activities. Then they can plant a bean to take home and watch it grow. 1-3 p.m. Free. Washington Park, 1230 Elm St., Over-the-Rhine, washingtonpark.org.
Get the Dirt on Backyard Composting: Learn how to balance a compost bin, what materials are compostable and some troubleshooting. At the end of the lesson, Hamilton County residents receive a free kitchen collector and a compost guide. 7 p.m. Free. Northside/McKie Recreation Center, 1655 Chase Ave., Northside, hamiltoncountyrecycles.org.
Rain Barrels: Learn to build rain barrels. Educators from the Sierra Club will teach you how to connect rain barrels to a downspout, how to connect two barrels in a series and how to sand and prime the barrels to get them ready for painting. Snacks and drinks will be provided. 7-9 p.m. $75 one barrel; $100 two. Imago Earth Center, 700 Enright Ave., Price Hill, imagoearth.org.
Midwest Regional Sustainability Summit: This conference brings Ohio River Valley region stakeholders together to exchange best practices, provoke thoughtful discussion and celebrate the work in sustainability that is currently being done across the Midwest. Program includes a keynote address from U.S. EPA Acting Deputy Administrator Stan Meiburg, roundtables with sustainability directors from Ohio, Indiana and Kentucky, breakout sessions to explore specific areas of sustainability and Green Cincinnati Sustainability Awards. 8 a.m.-5 p.m. $50; $10 student. Cintas Center, Xavier University, 3800 Victory Parkway, Evanston, midwestsustainabilitysummit.org.
Beltane: The last of three spring fertility festivals, celebrated approximately halfway between Vernal (spring) equinox and the midsummer (Summer Solstice). Beltane traditionally marked the arrival of summer in ancient times. Also known as May Eve, May Day and Walpurgis Night, it occurs at the beginning of May and celebrates the height of spring and the flowering of life. 7-8:30 p.m. Free. Imago Earth Center, 700 Enright Ave., Price Hill, imagoearth.org.