Q.what are the best flowers to plant in pots in zone 6 in central oregon
flowers must be deer resistant, in full sun, and small area of shade, and easy care. our ground is very hard, with birch trees roots, very hard to dig, so will have to use pot/planters.

Certified GKH Gardening Expert
Unfortunately, there is nothing that is deer proof. They will eat, almost, anything. Now I can help you with what will do fine in containers in your area. This article contains plants that will do well in your area in full sun, and almost any plant will do well in container, as long as you pay close attention to it, and its needs: https://www.gardeningknowhow.com/garden-how-to/gardening-by-zone/zone-6/zone-6-flowers.htm