Trim and halve beets; reserve 1/2 cup of the beet greens.
In a covered 12-inch skillet cook beets, potatoes, and sweet potato in hot oil over medium heat for 10 minutes, turning occasionally. Cook, uncovered, for 10 to 15 minutes or until vegetables are tender and brown on all sides, turning occasionally. Add pea pods to vegetables in skillet; sprinkle with salt and pepper. Cook, covered, for 2 to 3 minutes more or until pea pods are crisp-tender.
Add the reserved 1/2 cup beet greens, the cilantro, and lemon juice to vegetables; toss gently to coat. Serve with lemon wedges.