The Zimbabwean Gardener Issue 1 Winter 2012 | Page 22

In the rose garden After pruning care Pruning stimulates new growth. It is therefore important to follow pruning with an application of nutrients and a good soaking to sustain optimum shoot growth and flower production. This also presents a good opportunity to incorporate some compost and decomposed manure into the soil. Spread fertilizer, compost and manure evenly over the soil surface and dig in to a depth of 10 – 20cm. Apply a generous mulch to cover the soil and water well to drench the entire root zone. To protect the new young shoots from the risk of disease or infection, apply a full cover spray with a broad-spectrum fungicide, such as Dithane M45 or Mancozeb. Helpful tips • The best time to prune is towards the end of winter when average daily temperatures start rising and become favourable for new shoot growth. In practice, anytime from mid July to early August is usually good – earlier in warm areas and later in cold areas. • Position the thin blade of your secateurs above a selected bud and make a clean slanting cut. • Selecting outward facing buds to cut down to is good practice but not necessary. • It is not generally necessary to seal all the pruning wounds. However, this may reduce the risk of infection and is therefore good practice. Use a water-soluble paint (PVA) for this – bitumen based tree sealing compounds are not recommended. • Disinfect your secateurs before any major pruning with Jik, Dettol or any antiseptic. Remember prevention is better than cure. 22