Tubers

 

There is no basal plate on a tuber — in fact it looks quite disorganized about which way it wants to grow. Look at the way eyes sprout all over a potato. All tubers do this — so the best way to plant is wherever you see the most little sprouting tips.

 

While most tubers just keep increasing in size, a few diminish. However, unlike the bulb and corms, they can be divided simply by cutting them up, making sure that there is at least one sprouting eye per piece. (Debbie Van Bourgondien "The Bulb Lady")