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At this time of year dahlias are producing stunning showy flowers, but they lose impact if the stems flop forward under the weight of the flowers. To get the best dahlia floral display, tie their stems to canes as they grow to give them some support. Dahlia plantSticks or canesS...

Joe Swift demonstrates how to prune and take hardwood cuttings from dogwoods.springCreative suggestions for dogwoodCreate a dogwood container displayCreate a winter container displayMake a christmas wreathBrowse dogwood varietiesAdd autumn colour to your garden.

Plants are able to make their own food by capturing the energy from sunlight to convert carbon dioxide and water into sugar. But in order to stay healthy and give the best results they take additional nutrients out of the soil or compost, so it's important to provide them with su...

Carol Klein demonstrates how to rejuvenate primula vulgaris by separating newly rooted growth and replanting it.springMore advice on growing flowersCaring for peoniesGrowing lupinsPlanting out cerinthesGrowing dahlias from seed

You can easily propagate oriental poppies by taking root cuttings. They make perfect candidates for this propagation method as it exploits the plant's propensity to reproduce itself from every scrap of root left behind when plants are moved. Once most fleshy rooted plants are est...

Summer is the ideal time to take verbena cuttings. Overwinter the semi-hardy perennials in a frost-free place and you'll have a fresh, healthy supply of verbena plants next year to replace any in the garden that have been killed by frost

of beige or silvery trails appear and spread just below the upper surfaces of leaves.Pinch off infected leaves as soon as the first 'wiggling' trails are seen and dispose of them in the bin or burn them immediately.many shrubs, perennials, vegetables, fruit

The mullein moth, Cucullia verbasci, lays its eggs on verbascum, buddleia and figwort at the end of spring. Shortly after, from late spring to midsummer, the caterpillars demolish the foliage. Bad infestations can actually strip a plant. They then hide in the soil to pupate.Cater...

A fungal disease weakens the plant and can seriously reduce its flowering performance. The brown spots eventually grow together and develop grey centres. Infection is caused by air or water-borne spores entering the plant through damaged leaves. In wet weather the fungus spreads ...

Most lily bulbs are sold in spring, although some, such as Lilium candidum, are sold in the autumn. This is a time when mould can thrive, so check them carefully when you buy to make sure there are no signs of it - an infected bulb can easily spread the fungus. Lily bulbs don't h...