I find this one of the most satisfying horticultural tasks & a great way to increase plant stock.
Step 1. Select the right type of plant for semi-ripe cuttings.Its pleasantly surprising just how many plants can be propagated at this time of year by selecting semi-ripe cuttings. Healthy, vigorous side shoots without flowering buds from this years growth are best. The same method applies whether its a half hardy perennial (e.g. argyranthemum, osteospermum, pelargonium or fuchsia) or semi-tender or root hardy shrubs.
Step 2. Heel cuttings where the cutting is pulled away with a piece of stem from the stock plant have the added advantage of giving the cutting a kick start to root faster.
Step 3. The cuttings are vulnerable so need to be kept moist in a bag & put into growing media as soon as possible! Using a sharp clean cuttings knife, make clean cuts clearing away any foliage approx 2cm from the rooting tip this will help prevent the cutting from rotting.
Step 4. Dip the prepared cuttings into rooting hormone to further prevent the cuttings from rotting.
Step 5. Mark out a row in your growing media. Here at Logan Botanic Garden a peat & perlite growing media mix is used for all cuttings in a heated bench to 21 centigrade in a glasshouse. With a pencil thickness dibber mark out holes along your row & gently place a cutting into each hole & firm in as you go along to ensure the cutting is upright.
Step 6. Label, date & water cuttings. Then cover the entire heated bench with a plastic sheet to increase the right growing conditions of hot,humid & wet.
Step 7. Check every other day for four weeks watering as required, removing any debris, diseased or damaged cuttings as you go along.