Hi Tallulah. I hope it doesn't make too much of a difference when you get into the month of June, with so many hours of daylight. I have never previously dealt with a north sloped garden, so can't offer any specific advice regarding that. I have only been to Quebec, many years ago., to have any iidea what it is even like up near you in Canada.. Not sure if you have a nearby garden center or not. Or a big box store perhaps to help you get started with seeds when they put them on the racks. I guess you could always look online at Vesey's, Stokes, & Butchert gardens, for mail order seed/perennial roots sources I am sure there are others. Be sure to get your seed trays & attempt to get a head start with your perennials, biennials to begin with, giving the best exposure you can determine in spring as it approaches & then direct sow your hardy annuals as soon as winter is ending. The roots, tubers, etc & seeds will eventually break dormancy & seeds will sprout when it is warm enough to germinate...Good luck with your new garden!