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A gardening report published Oct. 2 outlines how to propagate thyme, sage and rosemary from semi-ripe cuttings in mid-autumn. It recommends healthy shoots, free-draining compost and a warm, humid setting, while warning that waterlogged soil can cause cuttings to rot.
Amateur Gardening published a seasonal guide on Oct. 2 explaining how gardeners can propagate thyme, sage and rosemary from semi-ripe cuttings, a method that can produce additional plants without buying new ones. The guide says this year’s growth, attached to a small portion of older stem, is suitable for cuttings until mid-autumn.
The report describes semi-ripe cuttings as shoots made from this year’s growth with a portion of the previous season’s growth at the base, called a heel. It advises choosing healthy shoots and avoiding damaged, unhealthy, unusually vigorous or atypical growth. The writer says he favors shoots that grow more horizontally and have short gaps between leaves.
Cut each shoot to about 10 to 15 centimeters (4 to 6 inches), just below a leaf node, then remove roughly one-third to one-half of its foliage. The guide recommends placing the cuttings in containers of peat-free cutting compost, a useful skill for gardeners who want to grow more plants for free. One suggested mix combines equal parts peat-free potting compost and silver sand; water the container thoroughly, then let it drain.
For rooting, the cuttings should be kept in a greenhouse or propagator, where the report says a little warmth can help when growing herbs in a greenhouse. A clear plastic bag secured over the pot can provide humidity if sticks keep it from touching the cuttings. The bag should be opened occasionally to release excess moisture. The soil should remain moist, not waterlogged, because poor drainage or overwatering can cause cuttings to rot.
More Plants From Existing Herbs
Taking cuttings gives gardeners a way to make additional herb plants from plants they already grow, rather than buying new stock. That can be useful for people who want more thyme, sage or rosemary for a garden or for cooking, though the guide does not provide a success rate or promise that every cutting will root.
The method also makes timing and moisture management central to the task. The report places the opportunity in a seasonal window through mid-autumn and stresses drainage, moderate watering and humidity. Its advice is practical rather than a measured trial: results may depend on the condition of the parent plant and the growing conditions.
herb propagation kit for thyme sage rosemary
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The Autumn Semi-Ripe Cutting Window
The report was written by Chris Collins and published by Amateur Gardening on Oct. 2, 2026. It focuses on semi-ripe cuttings, rather than treating all herbs or all propagation methods as interchangeable. The named candidates are thyme, sage and rosemary, and the suggested material is available on herb plants until mid-autumn, according to the article.
Collins also addresses alternatives for gardeners who lack specialist equipment or compost. A clear plastic bag can serve as a basic humidity cover in place of a propagator. For some soft-stemmed herbs, including basil, coriander and parsley, the report says leftover sprigs can be placed in water; roots may form in a week or two, after which the sprigs can be moved into peat-free compost. It also says they can be kept growing in water for many weeks if the water is changed regularly.
““Inadequate drainage or overwatering can rot cuttings.””
— Chris Collins, Amateur Gardening
Rooting Results Depend on Conditions
The article does not state how many cuttings typically root, how long semi-ripe cuttings of thyme, sage or rosemary take to establish, or whether the recommended approach works equally well in different climates and indoor conditions. It gives general guidance rather than results from a controlled comparison.
It is also not clear whether every herb variety within the named types will respond the same way. The report advises choosing healthy, representative shoots but does not identify particular cultivars or provide separate instructions for each herb. Gardeners should treat the timing and method as guidance, not a guarantee of success.
Prepare Cuttings Before Mid-Autumn
Gardeners following the guide can select healthy semi-ripe shoots while suitable material remains available, prepare them to the stated length and place them in a free-draining medium. They can then keep the pot warm and humid while checking that the compost stays moist but not waterlogged and that condensation does not build up excessively under a plastic cover.
The report does not announce a follow-up trial or a later update. Its practical next step is to monitor the cuttings for rooting; for sprigs of basil, coriander or parsley placed in water, Collins says roots may appear after a week or two. The article does not give a specific timetable for the woody herb cuttings.
Key Questions
Which herbs does the guide recommend propagating from semi-ripe cuttings?
It names thyme, sage and rosemary as suitable herbs for this method.
How long should a semi-ripe cutting be?
The guide recommends cutting shoots to about 10 to 15 centimeters (4 to 6 inches), just below a leaf node, then removing one-third to one-half of the foliage.
Can I take cuttings without a propagator?
Yes. Collins suggests covering the pot with a clear plastic bag secured by an elastic band, using sticks to keep the bag from touching the cuttings. Keep it in a warm, light place out of direct sunlight and open it occasionally to release excess moisture.
Why might herb cuttings fail?
Collins says inadequate drainage or overwatering can cause cuttings to rot. The growing medium should stay moist but not waterlogged.
Can herbs root in water instead of compost?
The report says leftover sprigs of basil, coriander and parsley can be placed in water. Roots may form in a week or two, after which they can be potted in peat-free compost; the water should be changed regularly.
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