It takes approximately 1400 meters of yarn to make a simple sweater and at least twice that to knit a "fancy" one. It also takes 4pounds of clean fleece to make the yarn.
The Doomsday Seed Vault on Svalbard has over 21,500 cannabis seeds in it. That means that there are more seeds in there for weed than there are for aspargus, blueberry and raspberry, for example.