Ariocarpus fissuratus from Brewster county, TX. These are 2 year old seedlings from a location in Brewster county, TX. These have proven hardy to 0F but they have not survived past that. These plants are 1cm sized plants. They have tuberous roots and are getting some growth. Normally a large plant would cost some serious money so these are small and priced I hope accordingly.
I do not guarantee these in a zone 5/6/7 because everyones growing conditions are different but this would be a good trial plant to grow in your cold outdoor garden. Try to plant outdoor 90 days before 1st hard freeze.