Semi-woody cutting definition

A semi-woody cutting is taken from a stem that has partially lost its softness but remains flexible, with a hard, brown base and a green, soft tip. This type of cutting has undergone a hardening process that involves the development of lignin, a substance that strengthens plant tissues.

Herbaceous cutting definition

An herbaceous cutting is a soft, green stem that has not yet developed lignin. These cuttings are taken in spring from plants that do not become woody, such as annuals and some perennials. They root quickly but are more delicate and sensitive to environmental stress.

Optimal timing for semi-woody cuttings

The best time to take semi-woody cuttings is from late June to the end of September, depending on the region and plant species. This period offers more stable temperatures, though exceptions may occur during extreme weather conditions.

Proper technique for semi-woody cuttings

To take a semi-woody cutting, select a 20 to 30 cm stem from a healthy plant, cut it just below a leaf node, and reduce the leaf surface to minimize water loss. Use rooting hormones if needed and plant the cutting in a well-draining soil mix. Cover it with a plastic bag or cloche to maintain humidity.

Rooting hormones and alternatives

Rooting hormones, also called root stimulators, help certain plants root more easily, such as rhododendrons and camellias. However, most plants do not require them. A natural alternative is to soak willow branches in water for a few weeks to create a solution rich in auxins, a plant hormone that encourages root growth.

Caring for semi-woody cuttings

After planting, keep the soil moist but not waterlogged and protect the cuttings from direct sunlight and wind. Once roots develop, remove the cover to prevent rot. Some cuttings can be transplanted in the same year, while others should be kept protected until the following spring.

Plants suitable for semi-woody cuttings

Many plants, including roses, hydrangeas, and lavender, thrive when propagated through semi-woody cuttings. The list includes both deciduous and evergreen shrubs, climbing plants, and aromatic herbs, each with specific care requirements.

Rose propagation through semi-woody cuttings

Roses are best propagated from August to September using semi-woody cuttings. Keep them under cover for about a month. Signs of successful rooting include leaves falling off naturally. Protect them from frost and replant in spring.

Rosemary propagation through semi-woody cuttings

For rosemary, take 10 to 15 cm cuttings, remove two-thirds of the leaves, and keep them under cover for 5 to 6 weeks. The persistence of leaves indicates rooting. Repot them in spring or plant them outdoors after the Saints of Glace.

Propagating conifers and other plants

Conifers like cypresses and thuja can be propagated using semi-woody or dry wood cuttings. For black elderberry, use dry wood cuttings in winter. Pomegranates, which are harder to root, require dry wood cuttings and rooting hormones to increase success.