Save this post: When to plant potatoes by gardening zones:, Zone 34: 24 weeks before last frost , Zone 56: Late Marchmid April , Zone 78: FebMarch , Zone 910: JanFeb , Plant when soil is Conventional and modern techniques for bioactive compounds recovery from plants: Review ScienceDirect Apple of Peru. Nicandra physalodes . Bought a plant many years ago but self seeds very easily. I tend to weed them out and pot up about 12 to give a head Fuel Cell Balance of Plant (BOP) Market Size, & Share, 2033