This made me thrilled:
"From Parking Lot to Paradise; The Making of an Urban Garden"
The Right Honourable Adrienne Clarkson
The Ottawa Botanical Garden Society continues to bring to Ottawa important speakers who enlighten and excite us about the world of horticulture. To that end, we are pleased to announce that The Right Honourable Adrienne Clarkson will speak to our members and the general public on Monday, April 26th, 2010, about building her new garden in Toronto where a six-car parking lot once stood. Our former Governor General is a keen gardener, has hosted the Canadian Peony Society national show twice at Rideau Hall, and she and her husband, John Raulston Saul were instrumental in making the splendid gardens at the official residence of the Governor General what they are today.
(I didn't get to attend the talk but would have been great to hear about!)