A note from Jim:
Never grown or eaten burdock? Here is a very good webpage with Burdock Info.
AW31 Takinogawa Burdock ( Arctium lappa )
Edible Burdock is often called Gobo in Japanese supermarket. Plants are cultivated mainly for the slender roots, that can grow to 4 feet long and 1 inch across. Burdock root is very crispy and has a sweet, mild pungent flavor, which is used as a delicacy in Japanese food. Burdock is a hardy biennial plant, but grow as an annual. Seed are sown in spring for havest in late summer or in fall for harvest in the next spring.
JF398 Watanabe Burdock ( Arctium lappa )
This variety matures earlier than Takinogawa and roots are slightly shorter, about 2.5 feet long. Suitable for sowing in spring and harvest in summer.