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Upcoming Presentations

  • Oak Spring Garden Foundation, Upperville, VA  - "Unusual Bulbs for the Garden and Greenhouse" workshop, Saturday, January 27th, 2024 
  • UK Hardy Plant Society Shade and Woodland Group  - "Woodland Treasures" Zoom presentation.  Tuesday, January 30th, 2024  
  • Oak Spring Garden Foundation, Upperville, VA  - "Woodland Treasures" workshop, Saturday, February 10th, 2024 
  • Delaware Valley NARGS Chapter Annual Flower Show, Wilmington, DE  - "Unusual Bulbs for the Garden and Greenhouse" presentation, Saturday, April 10th, 2024
  • Ladew Topiary Gardens, Monkton, MD  - "Fall BulbsUntapped Treasures" presentation, Thursday, October 10th, 2024
  • National Azalea  Society of America National Convention, Jenkins Arboretum, PA  - "Azalea Companion Plants" presentation and plant sales. Thursday, 8th May 2025

Available Presentations

PowerPoint lectures are offered world-wide, in person or via Zoom. All images are taken by John, at "Edgewood".  Information passed on comes only from his extensive personal experience.  For groups within reasonable driving distance of Exton, Pa, he can bring a selection of choice plants for sale.  The focus at "Edgewood" is on hardy plants and one of the main objectives is to grow as many as possible in the open garden, unprotected.  Careful siting and attention to cultural conditions mean that a wide variety of plants can be grown outdoors in a way that might traditionally be considered improbable, if not impossible. Tips on cultivation and propagation are widely featured and slide lists are always provided.  Lecture topics include:

"The Magic of Cyclamen" "Unusual Bulbs for the Garden" "Pushing the Limits" "Fall Bulbs - Untapped Treasures"
"Bulbs for Shade" "Species Iris" "Spring Bulbs" "Bulbs under Glass"
"Trilliums and Companion Plants" "Woodland Treasures" "Snowdrops and Companion Plants"

"Unusual Bulbs for the Garden and Greenhouse"


Recent Presentations

  • UK Hardy Plant Society Galanthus Group  - "Snowdrops and Companion Plants in the NE USA". Zoom presentation.  Thursday November 2nd, 2023
  • Washington Gardener Magazine - "Cyclamen". GardenDC Podcast.  October 2023 -https://washingtongardener.blogspot.com/2023/10/gardendc-podcast-episode-169-cyclamen.html
  • Greater Rochester Perennial Society, Rochester, NY  - "Unusual Bulbs for the Garden" presentation and plant sales. Thursday April 6th, 2023 
  • East Lancashire Group of the Alpine Garden Society - "Woodland Treasures" Zoom presentation. Sunday March 26th, 2023
  • Oak Spring Garden Foundation, Upperville, VA  - "Unusual Bulbs for the Garden and Greenhouse Workshop". Saturday January 21st, 2023 
  • Horticultural Society of Maryland, Cylburn Arboretum, Baltimore, MD  - "Unusual Bulbs for the Garden" presentation and plant sales.  November 8th 2022 
  • "Bank to Bend", Winterthur Garden, Winterthur, DE  - "Unusual Bulbs for the Garden" presentation and plant sales.. 11am, Saturday March 5th, 2022 
  • Henry Foundation for Botanical Research, Gladwyne, PA  - Trillium Walk. Sunday May 1st, 2022 
  • 2021 Massachusetts Gardening Symposium on Specialty Gardens, hosted by the Massachusetts Master Gardener Association  - "Unusual Bulbs for the Garden" Zoom presentation. Monday September 20th, 2021
  • East Surrey Group of the Alpine Garden Society - "Woodland Treasures" Zoom presentation. Tuesday July 20th, 2021 
  • Oakville Horticultural Society  "Unusual Bulbs for the Garden" Zoom presentation. Monday April 12th, 2021
  • Berkshire NARGS Chapter  - "Woodland Treasures" and "Unusual Bulbs for the Garden" Zoom presentations. Saturday March 6th,  2021
  • Piedmont NARGS Chapter at the J.C. Raulston Arboretum, Raleigh, NC -  "Woodland Treasures" presentation and plant sales. Saturday January 18th, 2020
  • Morris Arboretum of the University of Pennsylvania, Philadelphia, PA -  Woodland Treasures presentation and plant sales. 6:30pm, Thursday, October 17th, 2019
  • Hardy Plant Society of New England, Connecticut Chapter at The Solomon Welles House, Wethersfield, CT - "Woodland Treasures" presentation. Wednesday March 27th, 2019
  • Guilford Horticultural Symposium at the Paul J. Ciener Botanical Garden, Kernersville, NC - "Treasures for Shady and Not-So-Shady Gardens " presentation. Saturday March 2nd, 2019
  • Piedmont Landscape Association Seminar at the Paramount Theater, Charlottesville, VA - "Woodland Treasures" presentation. Thursday February 7th, 2019
  • Ladew Topiary Gardens - plant sales and "Woodland Treasures" presentation. Thursday October 25th, 2018
  • Watnong NARGS Chapter at the Frelinghuysen Arboretum in Morristown, NJ - "Fall Bulbs - Untapped Treasures" presentation and plant sales. Sunday October 21st, 2018
  • American Hemerocallis Society Fall symposium at the Radisson in Camp Hill PA - "Fall Bulbs" presentation and plant sales. Saturday October 20th, 2018
  • Delaware Orchid Society - "Orchids and Companion Plants in Mid-Atlantic Gardens" presentation and plant sales. Wilmington, DE. Tuesday October 9th, 2018

John Lonsdale Biography

Click here to view John's biography.