Grow Heirloom Beans – Plant Early Thorogreen Bush Lima Beans This heirloom dwarf plant is a big yielder! Early Thorogreen Bush Lima Bean produces a 3 inch, flat, thin lima bean that lacks the meaty texture of bigger lima bean varieties. Considered a baby lima bean as it grows on low maintenance, 18″ bush plants. Highly suitable to Northern states, Early Thorogreen Bush Lima Bean is a delicious choice for soups and casseroles. David’s Garden Seeds is a Veteran owned business that has been offering quality seeds since 2009.