For rosemary or similar herbs, you can propagate them using cuttings instead of stolons or runners. Here's how to do it:
1. Take a cutting: Choose a healthy stem or branch that is about 4-6 inches long...
Cut it just below a leaf node (where the leaves meet the stem).
2. Remove the lower leaves: Strip the leaves from the lower 2 inches of the cutting.
3. Rooting hormone (optional): You can dip the cut end of the cutting in a rooting hormone to encourage root development, although this is not always necessary for rosemary.
4. Plant the cutting: Place the cutting in a well-draining potting mix or soil, making sure to bury the stripped portion. Water it lightly.
5. Cover with a plastic bag or plastic wrap: Create a mini-greenhouse effect by covering the cutting with a clear plastic bag or plastic wrap. This helps to maintain humidity around the cutting.
6. Provide indirect light: Place the cutting in a location with bright, indirect sunlight. Avoid direct sunlight, as it can scorch the cutting.
7. Maintain humidity: Keep an eye on the moisture level, and mist the cutting if the soil starts to dry out. The plastic cover should help retain moisture.
8. Transplant: Once the cutting has developed roots, which may take a few weeks to a couple of months, you can transplant it into a larger pot or into your garden.
Using cuttings is a common method for propagating rosemary, and it can be quite successful.