Yates Vegetable Seed Leek Welsh Wonder SKU: 137208 MODEL: 17540 Error. try again later You've successfully joined the club $ 3 .98 each Available on orders $50 to $1500. More info × Mitre 10 Variants Fleshy, tender white stems. Excellent mild onion flavour. Hardy and versatile. Features and benefits Easy to grow. Frost hardy. Maturity 12 to 20 week.