We work to promote the enhancement, growth and careful use of Mt. Lebanon’s green space parks - BIRD PARK, TWIN HILLS AND ROBB HOLLOW - and to foster an appreciation of and respect for the environment.
The Mt. Lebanon Nature Conservancy has many nature-based programs, volunteer work days, a native plant sale and more. To learn about our events, please see our list of events.
Online sale ends Sunday, May 10 … or when plants run out
April 1 to May 10, Place your online orders for pickup May 16
May 16, 9:30-11:30, Live sale and pre-order pickup at Sunnyhill Unitarian-Universalist Church, 1240 Washington Road
If you miss out on your favorites during the online sale, please consider attending the live-and-in-person sale on May 16. The same plants will be available then.
Visit the Plant Sale Page to view the plants we are offering this year, our fifth annual sale!
School in the Park - Year 42!
May 11, May 12, May 13, May 14, May 20
3rd grade students from Jefferson, Foster, Hoover, Markham, Howe, Lincoln and Washington
School in the Park, a program of the Mt. Lebanon Nature Conservancy in partnership with the Mt. Lebanon School District and the Municipality, began in 1984 and we are pleased to continue this tradition.
It is an interactive nature discovery program for Mt. Lebanon’s 3rd grade students held each spring in Bird Park. The program’s activities support the school district’s third grade science curriculum and provide an opportunity for students to learn about native plants and animals in their woodland habitats and their connections among all living things.
School in the Park is staffed entirely by volunteer instructors from the Mt. Lebanon Nature Conservancy, the community, and high school students. Most of these high school volunteers are graduates of the School in the Park Program themselves!
Trail work to prep for School in the Park
Sunday, May 3, 9 a.m. to -12
Help improve the trails in Bird Park to “clear the way” for the third graders coming to the park
We will be hauling and spreading mulch to mark the trails and repair muddy locations. Please dress appropriately in a long-sleeved shirt and pants. Bring work gloves, large shovel, rake and/or pitchfork if you have one, as well as a water bottle. Meet at the Bird Park pavilion.
Sign up here for the Trail Prep Day! NOTE: RAIN DATE IS SATURDAY, MAY 9, 9-noon. We will notify all volunteers if weather leads us to change our plans.
Our 2026 Spotlight Project
Twin Hills Park
Riparian Area
This year we plan to rehabilitate the stream area “between the big bridges” in Twin Hills!
Please join us as we improve the site’s ecology by removing invasive plants in March and September, and planting native species in April, May and October.
Project: Twin Hills riparian area planting
Sunday, May 17, 9-12
Twin Hills Park, Chatham Park Drive entrance ( 40°23'52.2"N 80°03'24.8"W )
In 2026, Mt. Lebanon Nature Conservancy volunteers is improving the riparian area along Twin Hills Park’s stream.
We will be planting perennial flowers, ferns and grasses in the 0.3-acre area where we removed invasives in March and added trees, shrubs and other perennials in April.
If you planted perennial seeds at the Martin Luther King Day winter sowing event, please bring them today! In addition, we’ll have flats from North Creek Nurseries.
If at all possible, please bring a gallon or two of water to give the new plants a drink. Bring a shovel and gloves if you have them, or borrow some from us. Dress for the weather.
Sign up here. You’ll receive notifications if weather affects our plans.
Program: Green Reads book group
May 5, 7-8 p.m., Mt. Lebanon Public Library, Mtg. Room B
Book available at the circulation desk in April
Cosponsored by the library and Mt. Lebanon Nature Conservancy
Join us to discuss Rachel Carson’s “Silent Spring,” which sparked the nation’s environmental movement.
More info HERE.
How you can help Mt. Lebanon Nature Conservancy
Click on the “donate” button to make a contribution online. Sustaining donations (posted monthly to your credit card) help us the most because they even out the cash flow of our small non-profit organization.
Send a check donation, made out to “Mt. Lebanon Nature Conservancy,” to: P.O. Box 14901, Pittsburgh, PA 15243. Checks minimize the fees we pay for online processing.
We also highly value the time that volunteers give through the year. Hundreds of people join in to help weed, clip, haul or plant. We welcome other volunteer help, such as working with us to develop new programs; staffing booths at events like Mt. Lebanon’s Earth Day; doing some printing or photocopying; or contributing photographs that we can post to social media or our website.
Thank you!
Our 3 Nature Parks
Bird Park
Twin Hills Park
