Can parsley be left outside in winter?

If you're growing parsley in the right climate zones and taking the right precautions, it can survive winter outdoors. While some varieties of parsley have improved cold tolerance, the temperature in the area you live and work will play a large role in how well it handles the winter months. This guide explains to you the necessary traits and methods for successfully overwintering parsley. You'll learn the key temperature thresholds and techniques that will allow your parsley to persist year-round.

Zone-specific care. In winter hardiness zones 7 or 8, apply 6 inches of straw mulch around parsley before the first frost occurs. In areas where the temperature drops below 25°F (4°C), cover the plants to protect them from hard freezes. In zones 9-11, a light mulch is sufficient; however, plants should be checked monthly to ensure the soil remains moist. Soil formation will harden and become bare if frozen.

Container parsley requires special attention. For severe cold weather, it is best to move pots to a sheltered place, such as a garage. For the worst of the winter, wrap containers in bubble wrap or burlap, group plants together to try to obtain warmth from each other, and do not let pots stand on frozen surfaces; they should be raised on wood planks. Water only when the soil thaws.

Winter harvesting. If the crop is not harvested earlier, choose the "harvest" period wisely. Only harvest when thawing at midday is possible and the temperature is above 40°F (4°C). Use scissors to cut the outer stems, but do not remove more than 20% of the foliage. Do not harvest within a day or so before frost is forecast, as the cut leaves will probably not heal. Sanitize the equipment beforehand.

As the temperature reaches above 50 degrees F. (10 degrees C.) the process of spring recovery begins: remove the winter's protecting mulch gradually, in the course of two weeks; apply a balanced fertilizer to stimulate a new growth; keep watch for any signs of winter damage; cut away dead, useless stems down to the ground; give the ground a good soaking at the roots, and the plants will repay one for all one's trouble.

Before freezing temperatures arrive, utilize these winter methods. Prepare mulch material in advance. Place protective coverings. Keep track of weather conditions. Your parsley plants will endure through the cold months. You'll be able to harvest fresh parsley sooner, come Spring! Remember to shield your parsley properly.

Read the full article: When to Harvest Parsley: Ultimate Timing Guide