Grow & Cook Your Own Potatoes Fresh From The Vegetable Patch Second Earlies: If planted in Mid March would be ready to harvest within 12-14 weeks. Culinary uses include boiling, baking & salad. Offers high resistance to Powdery Scab, Gangrene, Damage, Bruising & Skin Spot. Maris Peer is a popular well-known variety of potato that will provide a bountiful harvest of oval, white tubers with a creamy flesh.