CO-Horts Blog

Monday, September 17, 2018

Bringing Herbs Indoors for Fall and Winter Use

Posted by:  Mark J. Platten, Teller County Extension Director

Many of us gardeners also love to cook, and all summer we’ve enjoyed cutting fresh herbs to use in our recipes. With summer over and the first frost imminent in the high country, how can we continue to enjoy them? One solution is to buy herbs at the grocery store, although that can be expensive and they may not be fresh. A better solution is to bring our herbs indoors so you can enjoy using them year-round. 
Herb Garden in a Raised Bed
 From every walk of life and corner of the globe, humans and herbs have shared history. Some of the earliest herb gardens have served us with medicinal, religious, and culinary staples; they’ve perfumed bodies, disinfected houses, and repelled insects. Herbs are defined as any plant, or plant parts, valued for “medicinal, savory, or aromatic qualities.” By this definition, herbs can be trees, shrubs, herbaceous perennials, annuals, vines or lower plants.

The best time to bring your herbs inside is before the first frost, which is the middle of September, or earlier, in many of our mountain communities. Perennial herbs such as parsley, sage, tarragon, oregano, mints, lavender, thyme, and chives can be divided in the fall. Use a shovel to cut the plant into sections taking as much root as possible. When dividing, place some back in the garden and pot one or two of the healthiest for your indoor herb garden. Pot the herbs in fresh, commercial potting soil and water them well.

Chocolate Mint
If your herbs are already in pots, check to see if they need re-potting. Fresh soil and enough room for the roots will help them make the transition indoors. Before bringing plants indoors, check each plant for pests by in­specting the stems and leaves. It’s a good idea, once you have them in the house, to keep them away from other plants, just in case they have any insects or eggs you might have missed.

Coming indoors can be traumatic to your herbs. They’ve been used to direct sunlight, rain, wind, and tem­perature variations. Before permanently placing them in your home, first set the plants outdoors, out of direct sunlight, for a few days to get them used to indoor conditions. Then bring them in for a few hours to get them used to the indoors. If you have time, and they’re not in danger of frost, repeat this process for up to a week.

Herbs need at least six hours of direct sunlight each day. A sunny windowsill works great. Turn your herbs regularly so they’ll grow evenly. If you don’t have enough natural light, use an inexpensive fluorescent shop light with a cool fluorescent, or grow, bulb. Hang the light about six inches above the plants and give them several hours of light each day. This lighting method also works great if you’re starting herbs from seed.

You can add to your herb collection by taking cuttings and starting new plants. You can propagate lavender, comfrey, horehound, oregano, peppermint, tarragon, thyme, lemon balm, scented geraniums, sage and rosemary from cuttings. Healthy tip growth makes the best cuttings. When taking cuttings, snip off a 4-5 inch length of stem, remove all but the topmost leaves, and insert into a loose potting soil. Keep the cuttings moist until they become rooted, then transplant to larger containers. Fertilize sparingly and water regularly.
Indoor Herbs courtesy of Andrea Dunn
Herbs can be beautiful indoors and nothing can replace fresh herbs in your home cooking. Imagine an indoor garden of basil, thyme, parsley, sage, rosemary, and chives. So have some fun and save some money by bringing your herbs indoors this fall.

Sources include Colorado Master Gardener Garden Notes:; Penn State Extension: , and Teller County Master Gardener Katie Geist.

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