How to Bring Rosemary Indoors for Winter
Pot rosemary before hard frost, give it a bright cool window, keep soil on the dry side, and raise humidity without overwatering.
Published by ThriveThyme
rosemary herbs winter indoors
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How to Bring Rosemary Indoors for Winter
Rosemary is a Mediterranean evergreen. Outdoors it is reliable about zones 8 to 10. Hardy cultivars such as Arp may hold in zone 7, and sometimes zone 6 with excellent drainage. In colder zones, treat it as a container plant and move it inside before hard frost.
See the rosemary plant page for spacing and care, and which herbs survive winter by zone for the full hardiness table.
When To Move It
- Pot the plant while it is still healthy, before nights are forecast near freezing.
- Illinois Extension notes rosemary dug from garden beds often fails transplant. Grow it in a container on the patio through summer so the move is a simple carry indoors.
- If it is in the ground, dig a generous root ball only as a last resort, pot it in free-draining mix, and expect some leaf drop while it adjusts.
Indoor Care
1. Place the pot in the brightest cool spot you have. A south or west window helps. Rosemary grows little in short winter days. 2. Keep soil on the dry side. Water when the top inch is dry. Do not leave the pot sitting in a saucer of water. Root rot from wet soil is a common indoor failure. 3. Raise humidity around the plant without soaking the mix. A pebble tray with water below the pot, or light misting, helps in dry heated rooms. 4. Hold fertilizer through winter. Resume light feeding when spring growth returns. 5. Inspect for pests before the plant joins other houseplants. Wipe leaves and isolate for a week if you see aphids or mites.
After Winter
Move the pot outdoors after your last spring frost and after a short harden-off. Return it to full sun and sharp drainage. In zones 8 and warmer you can plant hardy types back in the ground if winter wet is not a problem.
For a windowsill backup, sow herb seeds or root tip cuttings in late summer.
Next Steps
1. Check your frost timing on first frost date. 2. Add the rosemary move to Garden to Bed. 3. Bring tender annuals on a separate schedule: when to bring basil and tender herbs indoors.