http://www.fireflyforest.com/flowers While looking up wildflower info.. I came across this interesting site

"I was planing on growing it in a pot ... with a green house in the winter ..." "Because for my cactus soil i get cheap soil from lowes or homedepot throw in a bunch of prelite and rocks and a bit of food ... should that be fine?" Yeah, you definitely need to do some reading. : p Perlite and rocks will improve a fine soggy soil simply by leaving less space in the pot for water to occupy, but it's only marginally better than deliberately underpotting the plant. Long story short, any potting medium that forces a plant to drink or drown is bad, and most succulents will end up drowning. Might I ask which sorts of cactus you have at the moment? Some of them take bad soil better than others. I would recommend reading through as many of the 'gritty mix' topics as possible (more than once, and at intervals. There's a lot to take in), and also the one about growing trees in containers. The latter is less immediately applicable because cacti don't need aggressive rootwork to survive in a container, but it does explain the importance of roots to a plant's overall health. If a plant has weak roots, it's less able to deal with environmental stresses and pests. If one of these stressors finally overwhelms the plant, the blame will fall there and not with the plant itself even if it was the only one for miles around that succumbed.

See if there is a local horticultal society .They are very helpfull in where- what does/doesn't grow there ,the plants from hell that no sane gardener would grow in your area as they are invasiveand you would spend the next 20 yrs. dealing with them. Try www.gardenontario.org/site.php/ One I still look to for ideas is The Perennial Garden- Flowers for Three Seasons by Patrick Lima.Has great photos, ideas and most of the plants are able to grow for me. Book is put out by Harrowsmith.They also put out The Harrowsmith Annual gardenby Jennifer Bennett & Turid Forsyth. A good lighthearted read for any gardener that's full of wit trials & tribulations by Midge Ellis Keeble" Tottering in My Garden" it's old 1989 but I still pull it out for fun.

Can't help with local recommendations. But if you're not after gallon size or larger, I've been happy with other qt size natives received from Lazy S'S Farm Nursery (lazyssfarm.com) out of Charlottesville, VA. Noticed they have both the plants you are looking for. Here is a link that might be useful: Lazy S's Farm Nursery on-line store