A home in Mississauga. As the milder temperatures set in, buds on the trees begin to open and soon the deciduous trees will become canopies of shade again. At this time of year, homeowners in this suburb are buying dark topsoil to provide a healthy foundation for their lawns and to seed their flower gardens. Some companies deliver this soil in large containers which are delivered at the curb. Gardeners are getting busy so that May will bring an outburst of colour.