Learn How to Overwinter Herbs and Keep them Happy All Year
Homegrown herbs are wonderful to have on hand for culinary purposes, natural beauty recipes, and for their natural healing properties. Just because the cold season is beginning does not mean that you have to say goodbye to your herb garden.
Many herbs can overwinter outdoors if cared for properly. You can also preserve herbs in creative ways and overwinter them indoors. Learn how to overwinter herbs with these simple tips.
Keep Them Outside
Perennial herbs such as rosemary, sage, chives, winter savory, thyme, oregano, and mint can stay outdoors over the winter in many zones.
Perennial Herbs up to Zone 4
- Anise hyssop
- Bee balm
- French tarragon
- Garlic chives
- Lemon balm
- Sweet cicely
Perennial Herbs up to Zone 5
- Mint hybrids (apple mint, chocolate mint, etc.)
Perennial Herbs Up to Zone 6
- St. John’s Wort
Follow these steps to ensure that they are ready to face the elements.
Weeding: Start by removing any weeds growing up around the base of your herbs, so that they are not choked when they begin to grow again in the spring.
Pruning: Oregano, rosemary, lemon verbena, thyme, and sage can all overwinter outdoors and will benefit from a good prune in the fall. Trim away the uppermost leaves and any dead flower heads, and prune back all dead wood on the plant. You’ll probably find that you’ve pruned away lots of usable herbs—see different ways of preserving them for use over the winter.
Protection: All herbs will benefit from a two-to-four-inch layer of mulch to prevent the ground from freezing and to shield them from the harsh winter cold. Some herbs will need extra coverage in the form of a burlap wrap, cardboard box, or horticultural fleece over them to keep them insulated.
Bring Them Indoors
Annual herbs such as basil, pineapple sage, dill, borage, parsley, nasturtium, stevia, chamomile, and lemongrass are sensitive to cold temperatures. Instead of digging these up completely, try propagating them from cuttings and growing them indoors. Growing basil from cuttings is particularly easy to do.
Both annual and perennial herbs can be planted in containers and brought inside before the first hard frost of the season. There are a ton of creative ways to grow herbs indoors and it is great to be able to harvest them right from your kitchen!
Parsley can be difficult to dig up, as it has long roots that are easily disturbed. Dig deep beneath the plant and pot it in a container with a lot of depth, about ten inches.
Mint, thyme, and oregano are easy to dig out of the ground and take well to growing indoors.
Rosemary can thrive indoors, but in can also be difficult. Your best bet is to place it in a window where it will be cool and get a lot of natural light. For more on this herb, keep an eye out for our upcoming Guide to Rosemary which will be posted soon.
Before bringing any herbs indoors, be sure to check them carefully for pests and pest damage. If you see any, spray the plants with a bit of soap mixed with water to get rid of unwelcome creepy crawlies.
Amend the Soil
If you dig up your herbs and bring them indoors for the winter, it is the perfect time to add nutrients to the soil for next spring when you replant your herbs. Dig compost material into the soil and in the spring your bed will be richer and more nutritious, producing healthier, more prolific plants.
More on herbs!
- Find the Best Indoor Herb Garden for Any Space
- How to Harvest and Preserve Fresh Herbs
- Fresh Herb Finishing Salt Recipe
- Make a Winebox Herb Garden Fit for a Connoisseur
- 16 Recipes to Use and Preserve Fresh Basil