I got my aggregatum/lindleyi bare root twenty years ago now and it's been divided a number of times. I grow it in a sunroom, medium bark/perlite/charcoal mix in a wooden basket. It gets watered weekly, fertilized every second week, and gets a complete winter rest November to February but still in good light. I find it very easy to grow and it usually puts on a good show in late spring/summer. There is a photo of it in my gallery.