When Should You Plant Lily Bulbs in Zone 4?
The United States Department of Agriculture (USDA) plant hardiness zone 4 has average low winter temperatures that can reach between minus 30 and minus 20 degrees Fahrenheit. Because of the extremely low temperatures, gardeners in these climates often resort to flowering annuals instead of perennials. Fortunately, there are some perennials, including many lilies, that are hardy in zone 4. Many lilies in fact, grow and bloom well each year from the middle of June until the middle of September, even those that are not winter-hardy in the area.
