Arnold grows three different inedible taproots in his garden. What could they be?

[Donesha J]

I think indible is spelled right. In my paper its spelled like that. But yahoo answers said that its spelled inedible. So... Either way.

 

[Judith]

inedible = not good to eat

 

[JesusIsLord]

Beets, Carrots, Horseradish, Parsley, Parsnips, Radishes, Rutabagas, Salsify and Turnips.