Thomas Laxton Pea Seeds (Shelling Type) Heirloom Vegetable. Thomas Laxton is a high quality, heavy yielding, all purpose shelling pea first introduced in the late 1890’s that is perfect for the home gardener. Vines growing to 75-90 cm (2.5-3′) tall produce well-filled pods 8.75 cm (3.5″) long that are straight, broad and dark green. Each pod contains 7-9 large tender peas.