Daily Archives: March 13, 2023


Monday, June 26 – Wednesday, July 5 – Hampton Court Garden Festival & The Gardens of Southern England

Join the American Horticultural Society for a wonderful tour through southern England, June 26 – July 5, 2023. The brochure with detailed itinerary and travel reservation form with pricing are available now. With AHS Hosts Tracy Ward Violette, Lecturer Garden Historian Marion Mako and Tour Manager Verity Smith of Specialtours you will have memorable experiences including:

  • Out-of-hours visit to the historic Sissinghurst Castle Gardens accompanied by the Head Gardener
  • Tour of the Knepp Estate to learn about the rewilding project and see the new garden by Tom Stuart-Smith
  • A morning at Great Dixter with the Head Gardener, Fergus Garrett, and a private lunch in the Yoemans’ Hall
  • An exploration of the historic towns of Rye, Arundel and the city of Winchester
  • Hampton Court Garden Festival, on the Members’ Day, to see the high quality of show gardens and horticultural exhibitions

For more information and to make reservations, please contact our Development Department at (703) 768-5700 ext. 117, or email development@ahsgardening.org. Our fax number is (703) 768-8700.


Thursday, March 23, 6:30 pm – 8:00 pm – Biospheric Urbanism

The climate crisis poses the urgent challenge to make our urban environment more resilient in the face of unprecedented atmospheric changes such as rising temperatures, intensified rainfall, and longer droughts.  

A city can be understood as a sequence of artificial microclimates. Buildings change wind patterns and sunlight exposure, while streetscapes modify soil permeability, runoff, and solar radiation. For each man-made microclimate, a comparable natural condition can be studied. Research on habitats and on the survival strategies of the organisms living within them permits the introduction of plants into artificial urban environments that have similar climatic conditions.  

Using the logic of nature, cities can be transformed into complex urban ecologies, blurring the boundaries between the artificial and the natural. Science-based research allows the conception of solution-based projects, revealing our built environment as a network of microclimates in which plants combine the absorption of carbon dioxide with the production of evaporative cooling, simultaneously reducing the source of the problem and mitigating its effects. 

The built environment thus becomes a hybrid living organism, lying at the interface between a changing meteorology and an underused geology. Biospheric Urbanism conceives the urban environment as the intersection connecting what lies above and what lies below, using the intelligence of plants. 

Bas Smets (b. 1975) has a background in landscape architecture, civil engineering and architecture. He founded his firm in Brussels in 2007 and has since completed more than 50 projects in more than 12 countries with his team of 25 architects and landscape architects.  

His projects include the Parc des Ateliers in Arles, the park of Thurn & Taxis in Brussels, the Mandrake Hotel in London, and the Himara Waterfront in Albania. In 2022 he won the international competition for public space around the Notre-Dame Cathedral in Paris, France. 

Each of these projects is part of an interrelated research into the possible role and ambition of landscape projects. The aim is to invent ‘Augmented Landscapes’ by using the logics of nature. These augmented landscapes produce a new microclimate while providing new atmospheres. The collaboration with artists and scientists takes a central role in this research.   

A first monographic exhibition was presented in 2013 by deSingel International Arts Center in Antwerp and Arc-en-Reve centre for architecture in Bordeaux. Bas Smets has received numerous honours and awards, among which the Award for Urbanism and Public Space from the French Royal Academy of Architecture and the Aga Khan Award for Architecture. 

This Harvard Graduate School of Design lecture, the Daniel Urban Kiley lecture, is free and open to the public on Thursday March 23 at 6:30 pm in Gund Hall of the Piper Auditorium in Cambridge. For more information and accessibility information, visit https://www.gsd.harvard.edu/event/bas-smets-biospheric-urbanism/


Monday, March 20, 2:00 pm – 3:30 pm Eastern -Plant Hunting and Plant Transfers: Victorian Excesses, Online

The stories of the individual plant hunters who operated between the mid-eighteenth and mid-twentieth century have often been told and told well. The aim of this online Gardens Trust series of lectures with Dr. Toby Musgrave, therefore, is to broaden the subject and to explore four complementary yet contrasting topics. It will also serve as an introduction to the whole topic of plant hunting, collecting and transfer round the world, which we are planning to cover in more depth in the autumn. The third lecture on March 20 is Victorian Excesses. The series ticket costs £16 for the course of 4 sessions or you may purchase a ticket for individual sessions, costing £5. To register through Eventbrite, and for more information, visit HERE, or visit The Gardens Trust events page, https://thegardenstrust.org/events-archive/?events=gardenstrust. Attendees will be sent a Zoom link 2 days prior to the start of the talk, and again a few hours before the talk (If you do not receive this link please contact us). A link to the recorded session will be sent shortly after each session and will be available for 1 week.

The century before the outbreak of the First World War was the zenith of British domestic horticulture, a time when private gardens were a statement of conspicuous consumption and the plants cultivated often rare and expensive. This lecture will reveal some of the less well-known and sometimes barmy tales of horticultural excess.