here is a great image ,
makes me excited to look at it .
click on it and make it big !
imagine the colours ! the smells !
its beautiful .
the netted plants are isolated from insects to preserve  varieties from mixing .

the Preservation Gardens at Heritage Farms , Headquarters of the Seed Savers Exchange
2000 varieties multipied each year .
Photo snapped from this excellent reference of seed saving and growing ...
seed to seed by Suzanne Ashworth