How to Winterize Rosemary Plants

One of the most common rosemary plants, Rosmarinus officinalis, will usually grow hardy outdoors in the mild winters of planting zones 9 and 10, which are primarily in the Northwest United States. If you live in a colder winter planting zone, you will need to bring your plant indoors in the winter. Rosemary will usually not tolerate temperatures below 20 degrees Fahrenheit. Bring your plant indoors several weeks before the first frost date.

Rosemary plant from yard
Sturdy gardener’s hand trowel
Plant container
Fast-draining potting soil
South-facing window
Well-ventilated space
Indoor temperature of 45 degrees

Instructions

- 1
  Use the gardener's trowel to gently dig the rosemary plant from the ground when the temperature starts to drop and before the first frost date.
- 2
  Place the plant in a pot that is large enough to contain the roots and have the plant sit so that it is at the same level as when it was in the ground.
- 3
  Hold the plant steady and using the gardener's trowel fill in the dirt around the plant until the dirt level is even with the base of the plant.
- 4
  Pat the dirt lightly around the base of the plant to make sure the plant stands upright.
- 5
  Water the plant until it is evenly moist.
- 6
  Place the plant in a well-ventilated space in a south-facing window in full sunlight where the temperature is about 45 degrees Fahrenheit.

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