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Striped pale or white banding on a dark background, ie, Miscanthus zebrinus.

A microscopic worm of the family Nematoda, that resembles white cotton thread. May enter plant tissue and cause rotting.

Pertaining to iris flowers, which have a base colour of white or yellow, with stippled or feathered edges of a contrasting colours.

Refers to foliage having patches of different colours, usually as a result of the chlorophyll content. Common combinations are green with cream, white or silver, although some plants produce foliage that mix green with reds and yellows.

These miniscule sap-sucking insects multiply rapidly on leaves. Large colonies are immediately evident, as are the symptoms - silvery-white discoloration of the leaves and distorted shoot tips and buds.Packed clusters of tiny white insects on leaves

and there may also be white fungal growth.Spots on the leaves, fringed yellow-orange, possibly with white fungal growth beneath. Some spots might be white, others brown, surrounded by papery tissue. When the centres fall out, the leaf ends up peppered with holes

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

(especially the miniaturised varieties) look ridiculous, but there are always exceptions. This is one: it has slender leaves with white undersides and cones to die for.Number four: Amelanchier canadensis. Some may consider this a shrub and they would be right

.Identifying bumblebeesThere are six bumblebees likely to visit gardens, all varying in colour, size and tongue length. Each species favours different nest locations, such as below ground, trees or long grass.Similar to the white-tailed bumblebee, but with mustard

The adult codling moths lay their eggs on or near developing fruit. These eggs hatch into small white caterpillars, which eat their way into the fruit and feed inside while it's developing. The caterpillars may be found inside the fruit at harvest