Cold Hardy Varieties
- Mazzard and Mahaleb cherries are common rootstocks in the USA - Lawyer Nursery carries these seeds.
- Gisela is new from Germany and more productive.
- $4B global market for sweet and $1B for sour cherries - 
Sour cherry after initial planting, in 2007 at Factor e Farm:
Sour cherry after 2 years of planting: