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This page provides information on the most serious threats to UK plant health
In recent years there has been an increase in the number of pests and diseases arriving from abroad, largely attributed to the rise in volume and diversity of plants and plant products (e.g. fruit and timber) being imported from an increasingly diverse range of sources. Changes in climate and subsequent phenological changes may also increase the risk of pests and diseases becoming established.
The pests and diseases described on this page are either not known to be present, or are of limited distribution, and some are under eradication in the UK.
Plants showing symptoms or signs of the pests and diseases below (with the exception of Fuchsia gall mite and Box tree moth) should be reported to the Animal and Plant Health Agency (APHA).
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RHS Gardening Advice
We're a UK charity established to share the best in gardening. We want to enrich everyone's life through plants, and make the UK a greener and more beautiful place.