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Current Situation - Phytophthora ramorum

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 Phytophthora ramorum has now been found at over 300 sites in England and Wales as well as a number of sites in Scotland, Northern Ireland and Channel Isles. This total includes some on established plants growing outside in soil. In addition to Rhododendron and Viburnum, there have now been findings on Pieris, Camellia, Syringa, Kalmia and single findings on a pot-grown Taxus baccata (yew) and Hamamelis virginiana (Wych hazel) plants.

In addition, some tree species have been affected. Quercus falcata (a non-native southern red oak tree) and a native beech (Fagus sylvatica). European species of Holm oak (Quercus ilex) and horse chestnut (Aesculus hippocastanum) have also been confirmed. All these findings are associated with previous adjacent findings of the disease in rhododendron. All the sites are being closely monitored.


Click here for Outbreak Map (Print for best results - pdf)


Buyers of host species – mainly rhododendrons, camellias and viburnum – are advised to check plants before purchase for symptoms of the disease and to contact their garden centres if these subsequently develop.

4 Dec 03

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  Page last modified: 4 Dec 2003
Page published: 21 July 2003
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