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Soft-bodied, 4mm-long mealybugs are often found on greenhouse plants and house plants such as cacti and succulents, feeding on their sap. They are covered by a white, waxy secretion, and congregate in leaf axils and other inaccessible parts of plants. They debilitate the plants a...

Both the 1cm-long black adults and 1cm-long plump, white, legless, brown-headed larvae are a problem. The latter hide in the soil, and feed on roots (severing them) and bore into tubers from autumn to spring. Container plants are most at risk. The adults have six legs and a pair ...

Bedding geraniums are actually members of the genus Pelargonium. Many varieties of pelargonium are used as bedding or house plants.Unlike most annual bedding plants, geraniums are easily propagated by cuttings, so you don't have to fork out for more plants the following summer. K...

Tiny sap-sucking scale insects. They are 1-6mm long, and their whitish, grey-brown shells are covered by protective, waxy scales. The insects don't cause too much damage unless they are present in huge numbers, but some excrete an unsightly, sticky, sugary substance (called honey...

These tiny, sap-sucking pests may be only 0.5mm long but they can wreak havoc in a greenhouse or on houseplants indoors. For most of the year they are a pale green colour with two dark spots on their back; it's only in autumn and winter