How to Propagate Hydrangeas from Cuttings in August and Grow New Plants for Free

Hydrangeas are one of the easiest and most rewarding flowering shrubs to propagate. If you already have a healthy hydrangea growing in your garden, you may be able to turn a few strong stems into several new plants without spending money on additional nursery plants.

August can be an excellent time to take hydrangea cuttings in many climates because the stems have developed enough to produce healthy new growth while still having some flexibility. With the right technique, proper moisture, and a little patience, those small cuttings can eventually develop roots and become beautiful flowering shrubs.

Before you begin, choose a healthy hydrangea that is free from obvious disease, severe pest damage, or weak growth. Morning is often a good time to take cuttings because the plant is less stressed by heat, and the stems are usually well hydrated.

Look for a healthy stem from the current season’s growth. Ideally, choose a stem that is neither extremely soft and green nor completely hard and woody. A stem with several healthy leaves and no flower head is generally a good candidate.

Prepare a clean, sharp pair of pruning shears or garden scissors. Clean tools are important because dirty cutting tools can transfer bacteria or fungal pathogens between plants.

Cut a section of stem approximately 4 to 6 inches long. Make the lower cut just below a leaf node, which is the point where leaves emerge from the stem. The area around a node is particularly useful because roots can develop from this region.

Remove the lower leaves from the cutting, leaving only two or three leaves near the top. If the remaining leaves are very large, you can carefully cut them in half. This reduces moisture loss while the cutting is developing roots.

If the cutting has a flower or flower bud at the top, remove it. Producing flowers requires energy, and at this stage you want the cutting to concentrate its energy on developing roots rather than supporting a bloom.

You can place the cuttings into a suitable propagation medium. A simple mixture of quality potting soil and perlite can provide a good balance between moisture retention and drainage. The medium should remain moist but should never become waterlogged.

Some gardeners use rooting hormone on the bottom portion of the cutting. Rooting hormone is not always necessary with hydrangeas, but it can encourage root development in some circumstances. If you use it, apply only a small amount according to the product directions.