For Kansas gardeners, St. Patrick’s Day marks more than just celebrations, it’s a reminder to plant potatoes. Mid-to-late March is ideal for planting, according to Kansas State University horticulture expert Cynthia Domenghini. She advises using certified seed potatoes instead of store-bought ones, as they are disease-free and sprout efficiently.

Most seed potatoes can be cut into four pieces, though larger ones may yield more. Each piece should weigh 1 ½ to 2 ounces and typically have multiple eyes. Cutting them a few days before planting allows the surfaces to toughen, providing protection.

Plant seeds 1 to 2 inches deep and 8 to 12 inches apart. Potatoes emerge slowly, often appearing in mid-to-late April. As they grow, mound soil around the base to shield new potatoes from sunlight, which can cause them to turn green and develop solanine, a toxic substance.

For more gardening tips, K-State’s Department of Horticulture and Natural Resources offers a weekly Horticulture Newsletter to help maintain home landscapes and gardens.