It’s tradition to plant potatoes on St. Patrick’s Day, but the key to when to plant is to assure the soil temperature is consistently above 45° and the soil is dry enough to be worked. A simple test to see if your soil is workable is to squeeze a handful. If it stays together like modeling clay it’s too wet. If it crumbles like a cupcake, it’s ready to dig in and plant. This is a good time to dig in organic material, such as Sheep, Peat and Compost. Ideally, you’ll be able to plant by the end of March. Begin by buying certified seed potatoes. Potatoes purchased at the grocery store are often treated to keep them from sprouting. Extend your season by choosing an early variety such as Red Norland or Red Pontiac and a mid season such as Kennebec White.