Yes, I know it's September already but I took these pictures a few days ago and haven't had time to post them yet. Are you looking for ideas for perennials that are showy at this time of year in Calgary? My Adventure Garden at this time of year is taken over by lots of late-bloomers such as sedum 'Matrona', rudbeckia 'Golden Glow',
and one of my all-time favourite plants, perovskia atriplicifolia (Russian Sage.) All of these plants do well in a sunny spot and are drought-tolerant. They're also all low maintenance except the rudbeckia, which is a tall plant that needs staking.
To see what this garden looks like at other times of the year, click here and scroll down.