Bring rosemary plants indoors in the fall if you live where winter is cold (Zones 5 and north).
Dig up plants and repot into containers at least 1.5 times larger than the plant’s root area.
Use a soilless potting mixture with a little sand or fine gravel mixed in as rosemary thrives
in a well-drained medium. Place in a sunny south or southeast window. Plants may need some
additional artificial light if they appear weak or begin to yellow. Lightly fertilize once
every 6 weeks. Allow soil surface to dry out between light waterings. Leaves can be harvested
in small quantities throughout the winter for use in cooking.