News & Events

Tropical Valley Expedition, British Columbia

Documentary showing an expedition through northeastern British Columbia by Mary Gibson Henry, Pennsylvania botanist and plants woman. Mrs. Henry was interested in the legendary “Tropical Valley” of northern B.C., where the warmth of hot springs supposedly fostered vegetation not otherwise found in the region. The film was shot in the summer of 1931, during the first of four such journeys she made in the period 1931-1935. Mrs. Henry was accompanied by her husband, Dr. J. Norman Henry; four of her children; topographer Knox McCusker (of the Dominion Topographical Surveys Branch); Dr. B.H. Chandler, a surgeon friend; and outfitter S. Clark, as well as various wranglers. The second and third reels of this three-reel film show the party of 16 travelling by pack-train, crossing rivers, caching food, and fishing, as well as some camp scenes. At an encampment of “Grand Lake Indians” on the Tetsa River, they engage Charlie Macdonald, the chief’s son, to guide them to Toad Hot Springs on the Toad River, but they do not proceed north to Liard Hot Springs. On the return trip south, stops include St. Paul’s Lake, Henry River, and Lake Mary and Lake Josephine [named after the Henry’s daughters]; these place names do not seem to have become official. Following the Peace River, they arrive at Hudson’s Hope (having travelled 800 miles in 79 days), and continue down river to Taylor Flats.

Henry in the fall reminds us how much open space matters

The Henry Botanic Garden’s 42 acres of woods, fields, and streams are majestic in the fall. It is hard to imagine that this glorious, ever-changing, natural rainbow palette is so close to the hustle of a major city. As one recent visitor observed: “After spending time at Henry I feel better than I felt when I arrived.”  To that point, Henry’s ancient stony outcroppings, cooling alpine sites, lush dappled forests, dark riparian glens, and broad open meadowlands play a significant role in purifying our air, filtering the water, controlling flooding, and preserving a pristine view shed.


Mary Gibson Henry: Botanist, Plant Hunter, Explorer

An exhibit inspired by the 1963 display of her work at the NY Botanical Garden

Beginning on Oct. 25th, the public is invited to see the exhibit and visit the Henry Foundation on Tuesdays, Wednesdays and Thursdays from 10 am to 2 pm with a $10 admission fee for the exhibit. A garden visit will also be available for $10. No charge for members.

Group reservations by appointment at 610 525-2037 or

Artifacts from Mary Henry’s explorations, including her scientific equipment, herbarium specimens, maps, tools, family photographs and numerous awards will be on display in our new gallery. Many of these items were featured in a 1963 exhibition of her work at the NY Botanical Garden. Others are from the archives or on loan from family members. The exhibit will continue through March 2019.


“The Living Forest: A Journey into the Heart of the Woods”

Presentation by Joan Maloof, Sunday, Sept. 30, 2 pm, Sharpless Auditorium, Koshland Science Center, Haverford College

Joan Maloof founded the Old-Growth Forest Network to preserve, protect and promote the country’s few remaining stands of old-growth forests. She is an ecologist, conservationist and writer with a unique voice. Professor Emeritus of Biological Sciences and Environmental Studies at Salisbury (Md.) University, D. Maloof has studied and worked with plants all her life. She has published numerous research articles and written several books, including “Nature’s Temples: the Complex World of Old Growth Forests” (2016) and “The Living Forest: A Visual Journey into the Heart of the Woods” (2017). The free-of-charge presentation will be followed by a reception. Follow the signs from the Lancaster Ave. entrance for ample parking in the visitors’ lot on the Haverford College campus. The annual event is co-sponsored by the Haverford College Arboretum Association, the Hardy Plant Society/Mid-Atlantic Group and the Henry Foundation for Botanical Research.


Fall Migrants: Bird Walk with Gregg Gorton, Saturday, Sept. 15, 8 am

Join a group of early birders led by well-known avain enthusiast Gregg Gorton to encounter migrating warblers, flycatchers and thrushes. You may even see a pair of Krider’s hawks, a Great Plains race of red-tailed hawks, which have been spotted in the garden for the last several years. Krider’s hawks are pale, with a whitish head and light pink coloration of the tail. Meet at Henry House. Wear appropriate shoes for the uneven terrain and bring your binoculars. Please call the office at (610) 525-2037 to register. There is no fee for this walk.

Henry Plant sale was a success. Thank you!

The 2018 plant sale was a great time for members, guests and staff. We sold out of perennials and 20 folks signed up as new members. Thanks to all. Photo credit / John Fried.

Bird Walk

Saturday, May 19, 2018, 8 am

Meet at Henry House to follow avid birder Gregg Gorton on a walk. Wear appropriate shoes for the uneven terrain and bring binoculars. Please call the office at 610 525-2037 to register. This walk is sponsored by the Philadelphia Country Club. There is no fee.

Rock Garden Walk: Amsonias and Aesculus

Thursday, May 17, 2018, 4 pm to 6 pm

Join us for a walk led by Susan Treadway to see amsonias and aesculus in bloom in the rock garden at this beautiful time of year. Walks will leave Henry House at 4 pm and 5 pm. Light refreshments will be served.

Members, no charge, Guests, $10, Please call the office for reservations at 610 525-2037

Tomato Plant Sale

Great varieties from cherries to beefsteaks. Tuesdays and Thursdays from 10 am to 2 pm through the month of May