Burdock requires a deep, 1-2′, well-drained soil to produce quality roots. Sow anytime in spring, about 2″ apart, 3/4″ deep, in rows 24″ apart. Thin to 2-3″ apart. HARVEST: Fall through early spring. What climate does burdock grow in? Burdock is started from seed and prefers a well drained soilRead More →