Sat, April 25 9am-3pm All Ages. Clearing out some Black-eyed Susan’s? Want to plant some Butterfly weed? Bring in your potted native plants and take home something new! Please label your plants to include basic information (name of plant, sun, shade, wet, dry…) so they can thrive in the new home. Please drop off plants
April 25 2 pm – 4 pm May 9 2 pm – 4 pm May 23 2 pm – 4 pm We will remove invasive plants from the park and in
Sun, April 26 1pm-3pm Ages 8+. The sunlight is getting longer with each spring day. Take a guided hike with a Naturalist to gather leaves, petals, and other treasures from the landscape. Then use your finds to craft a gorgeous suncatcher that will bring the beauty of the season into your home! $6/person. REGISTRATION REQUIRED.
Mondays April 6- Oct. 26 8:30am-10:30am & Thursdays April 9 - Oct. 29 8:30am-10:30am Ages 18+. Do you enjoy gardening, but don’t have the space or a deer-proof fence? Join like-minded green thumbs (and beginner brown thumbs) to grow your own vegetables, herbs and flowers and tend to our shared garden plots. We’ll provide the
Tues., April 14 to May 19 10:30am-11:30am Ages 2 to 5, with an Adult. Discovering nature is a lifelong journey. In this class, you and your little one will explore the natural world through hands-on activities, nature play, stories and crafts. Non-mobile siblings only, parent/guardian must be an active participant. This program will be held
Wednesdays, March 18 to May 20 - 9:30 am - 10:30 am Ages 55+. Walking in nature provides benefits to both the mind and body. Enjoy a relaxing stroll with one of our Naturalist along some of Cromwell Valley’s less strenuous trails. FREE! Dates: 3/18, 3/25, 4/1, 4/8, 4/15, 4/22, 4/29, 5/6, 5/13, 5/20. REGISTRATION REQUIRED
Fri, May 1 8pm-9:30pm Lantern Light Night Hike – Ages 8+. Upcycle pantry cans into glowing lanterns, then join a Naturalist for a magical nighttime adventure. As we explore the trails under the stars, your handmade lantern will light the way! $6/person REGISTRATION REQUIRED
Sat, May 2 1:30pm-3pm Springtime Bug Bonanza – Ages 5 to 12, with an Adult. As the weather warms, the ground comes alive! Meet the fascinating insects emerging in spring, discover their secret roles in the ecosystem, and make a fun insect-inspired craft to take home. $3/child. Meet at the Sherwood House – Sherwood Farm
Sun, May 3 9am-11am Let’s Go O’s! – Ages 12+. These neo-tropical migrants return to Cromwell Valley each spring to build their nests and raise young. Come experience the Baltimore and Orchard Orioles in action as we walk the park’s trails. Bring binoculars if you have them. FREE! REGISTRATION REQUIRED
Ages 13+, with an Adult. Join us for a morning in the garden. We provide direction, gloves, tools, and water. You bring a hat, sunscreen and a little energy. Drop-in program. FREE!
Sat, May 9 9am-11am Drop in Gardening! – Ages 13+, with an Adult. Join us for a morning in the garden. We provide direction, gloves, tools, and water. You bring a hat, sunscreen and a little energy. Drop-in program. FREE!
Sun, May 10 1pm-2:30pm Historic Lime Kiln Bottom – Ages 14+. Cromwell Valley was once known as Lime Kiln Hollow, or Bottom. Hike to the reconstructed kilns on the Blue Trail, learn their history, and then bush whack to see others which have been hidden by nature over time. $3/person REGISTRATION REQUIRED
May 15, 2026 - 6 pm - 8 pm - in the Sherwood House $10 p/person drinks and desserts provided - Ages 18+ Jen will discuss the history of humans and fire in the eastern United States and the importance of fire in maintaining healthy ecosystem function and to complete plant life cycles. She will
September 18, 2026 – Dr. Wayne Bell "The Chesapeake Working Landscape: Past, Present, and a Hopeful Future" A history of land use on the Chesapeake Bay watershed, from pre-colonial times to the present, and insights that land use changes provide for bird conservation. Background - Dr. Bell is Senior Associate and former Director of the
October 16, 2026 – Carrie Engel – Native Plants For Fall – Why is fall a great time to plant natives? Which natives have fall color and/or flowers? Which native plants are migrating pollinators attracted to? Let’s dive into fall natives and learn about these and other subjects. Samples and a slide show will be
Bats: Kerry Wixted presenting the benefits of having bats in your yard November 20, 2026 6:00 - 8:00 pm in the Sherwood House $10 p/person drinks and desserts provided - Ages 18+
Cromwell Valley Park Office
(Sherwood House)
2002 Cromwell Bridge Rd
Parkville, MD 21234
GPS: 39.415, -76.552
Phone: 410-887-2503
TDD: 410-887-5319
Willow Grove Nature Education Center
2175 Cromwell Bridge Rd
Parkville, MD 21234
GPS: 39.417, -76.548
Please remember that the Park itself is open only during daylight hours, sunrise to sunset.
In case of inclement weather, the Nature Center and activities follow Baltimore County Pubic Schools. Check the BCPS Website for the latest information on closing. If closing early, all evening activities at the Park are cancelled.
On Saturdays and Sundays when the office is closed, you may call the Nature Education Center.
Note: The addresses (2002 and 2175) are really for Post Office use. If used on a GPS, they may take you to a strange place in the park, or leave you on the main road. Use the GPS coordinates instead.
The Cromwell Valley Park Council (CVPC) is a volunteer, non-profit organization dedicated to the stewardship of Cromwell Valley Park as a public space for passive recreation and School Programs. The CVPC works in cooperation with the Baltimore County Department of Recreation and Parks and other entities to maintain, preserve and protect the natural environment and historic structures in the Park.
The Cromwell Valley Park Council is not an official site for Baltimore County Government.