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The non-native golden root mealybug, Chryseococcus arecae was first recorded in the UK in 2012. It is a native of New Zealand that unlike other root mealybug species found in Britain can be found on the roots of outdoor plants all year round.
Common name Golden root mealybugScientific name Chryseococcus arecaePlants affected Meconopsis, Primula, potentially many other plantsMain symptoms Lack of vigour, yellow mealybugs on rootsMost Active All year
Golden root mealybug is a sap feeding insect that feeds on the roots of a wide variety of plants, although it has mainly been found on Meconopsis and Primula in the UK. Unlike most other mealybug species found in the Britain it is able to survive the winter outdoors.
The golden root mealybug is a recent arrival in the UK, and has so far only been found in Scotland and northern England. The RHS wants gardeners finding this insect in their garden to let them know by sending samples to the Entomology Team, RHS Garden Wisley, Woking, Surrey GU23 6QB. The postcode of the house/garden where the pest has been found should be given, along with the identity of the host plants, or if unknown a sample of the foliage and flowers.
You may see the following symptoms:
There are currently no pesticide controls for root mealybugs in the open ground. Heavily infested plants should be removed and burnt or disposed of in council waste.
AphidsMealybugPhormium mealybug Woolly aphid
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