Seeds from Seeds of Change, Botanical Interests, Renee’s Garden, J. L. Hudson Seedsman, and Baker Creek Seeds.

Baker Creek is a very cool business and I love supporting them. https://rareseeds.com/

Seed potatoes and seed garlic from Irish Eyes. https://www.irisheyesgardenseeds.com/

Tend to order later than I should, when it comes to rare stuff I buy them from whoever still has them in stock.

www.horizonherbs.com   rare and unique herbal stuff, but also food/medicine and food plants.   fantastic folks.

Seed Savers Exchange (https://seedsavers.org/).

You can buy seeds from the Home Farm catalog on the website. Or, if you’re fascination with heirlooms runs really deep, you can join Seed Savers Exchange to have access to the Yearbook, a 500+ page catalog in which listed members share their oftentimes extremely rare varieties. When you order from the yearbook, you order directly from the grower of the variety. As a listed member (sell through the yearbook), and have had a lot of fun sharing some unusual varieties with people throughout the world.

Also,  favorite plants have come from seeds/garlic  ordered through the yearbook. the yearbook also has scionwood listings–there are at least 250 apple varieties available.