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unique features. Plants can be pollinated in pots in coldframes or unheated greenhouses, or outside in the open garden. It is warmer work when done in the greenhouse, but pollinated flowers are more prone to rotting when indoors. Hellebore plants

Alliums are spectacular plants and it's worth saving a few seeds to sow in the spring to grow some more for the garden. The seeds will germinate quickly and reach flowering size in a couple of years.SecateursPaper envelopesSeptember - October20

The first offspring of a cross between two cultivars, bred under strict conditions to create a uniform, high-yielding crop. Seeds gathered from such hybrids don't breed true.

The problem looks worse than it is. Miniscule mites secrete chemicals that cause blistering or blotches on the new leaves, which gradually turn blackish-brown. Although the mites breed prolifically, producing several generations over summer

The culprit is Trionymus diminutus, a 4mm sap-feeding mealybug that breeds relentlessly when the weather is warm and isn't killed by winter frosts. It deposits a white, waxy substance at the base of the sheathed phormium leaves. A mild infestation

, moving to a host plant to overwinter. They breed at an alarming rate - females can give birth to live young when only a week old. They are sap-sucking pests and the excess sap is excreted as honeydew. This sticky residue falls on to the lower leaves

insects - which have a fluffy white covering - carry on feeding on the sap, prolonging the problem. Prolific breeding in summer means the symptoms don't disappear. Young, winged, sap-feeding insects attack young bay foliage, discolouring and distorting it

Even a small pond will make a big difference to your garden, attracting a wide range of creatures. Let wildlife find your pond naturally and it will soon become a thriving habitat for anything from mayflies to hedgehogs.Give your pond the best

that they turn orange-red. They thrive in hot, dry conditions so life in the greenhouse, or a centrally-heated home, suits them just fine. If the temperature stays above 12 celsius, they can breed all year round.Leaves and stems of plants covered in fine webbing

Turn over a leaf and you'll see 2mm long white flies. With a life cycle of just three weeks, whitefly breed very fast. Both adults and offspring are sap feeders and a severe attack will weaken a plant. They excrete the sticky excess, called honeydew