Originated in England, this unusual heirloom was first introduced in the U.S in 1854. Tom Thumb is absolutely the best pea variety for container and window boxes’ planting, which means you can grow it right outside your kitchen window! As a matter of fact, what makes peas unique from other vegetables is their high protein content, not to mention that they are one of the best plant-based sources of protein, which is a major reason why they are so filling, along with their high amount of fiber. It is worth noting that protein works together with fiber to slow digestion and promote feelings of fullness.