While we wait for spring produce to start popping up at the farmstand, mushrooms are an easy way to keep your wintertime meals fresh and healthy. Amelia Tarpey is the Program and Publicity Manger for GrowNYC Greenmarkets. She said the mushrooms sold at greenmarkets right now are grown indoors in climate-controlled chambers, making them reliable through the winter. Shoppers can find anything from lion's mane to oyster mushrooms. Prices for mushrooms vary widely depending on the variety.