Plant rosemary in a sunny, sheltered location where the plant is protected from harsh winter winds. Unfortunately, there is no guarantee that your rosemary plant will survive a cold winter, even with protection. However, you can add a bit of extra protection by covering the plant with a frost blanket during cold snaps.Click to see full answer. People also ask, how do you keep rosemary plant alive in the winter?Temperature: While rosemary survives below 30 degrees outside, inside keep the temperature in the 55 to 80 degree range. About 60 to 65 degrees is best. Air circulation: While not something usually mentioned, air circulation is important. Stagnant air allows mold and mildew spores to settle on plant leaves.Beside above, what happens to rosemary in the winter? Despite the plant’s Mediterranean origins and its sunny reputation, rosemary doesn’t like warm temperatures during the winter. You want to protect your potted plants from hard freezing. Covering them will protect them as long as the temps don’t stay below freezing during the day. Considering this, will rosemary plant come back after winter? You can do light pruning and harvesting any time of year, but a rosemary plant responds best to hard pruning in winter when it isn’t actively growing. When pruned in winter, the plant grows back in spring looking better than ever. Note: For most people who grow rosemary, the plant will go through a cold period.What temperature can rosemary tolerate? Temperature and Humidity Outdoors, rosemary can tolerate high temperatures and a wide range of humidity. Most varieties are hardy only to 30 degrees Fahrenheit. Where temperatures dip below 30 degrees, rosemary plants will have to spend the winter indoors.
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