Three types of peas are common in New Mexico gardens. Shelling or English types should be harvested, usually beginning at the bottom of the plant, when pods become plump. Pick pods often so the plants will remain productive. Don't allow the pods to over-mature or the enclosed peas will lose their sweetness. Harvest pods before the peas inside begin to swell.
Snap peas have pods that become more thick and fleshy.
Harvest early before they lose their sweetness and become fibrous.