The move follows criticism that the trade body has not issued a tough enough statement on Xylella from growers who want to ban imports of some plants.
Following an emergency Xylella meeting held last week at the HTA, garden retailers have signed up to support a joint industry plant sourcing statement about Xylella fastidiosa.
The statement, which incorporates the existing HTA Ornamentals Management Committee statement, reads as follows: "As a minimum standard, the following businesses have taken the decision NOT to knowingly purchase any host plants originating from regions where the disease Xylella is known to exist.
"The decision has been taken after detailed consideration as to the potential catastrophic impact the introduction of the disease could have to the UK environment, coupled with the ever increasing number of host plant genera of this disease. This is in line with DEFRA’s good practice recommendations."
The HTA is aware that this is a minimum standard and therefore individual businesses are encouraged to develop their own policy for managing the risks posed by Xylella fastidiosa.
Areas involved include Corsica, parts of Provence, Alicante, Liguria, Monaco, Saxony, Thuringia and Apulia.
The following retailers have signed up to the statement. Orchard Park Garden Centre, St Peters Garden Centre, Henry Street Garden Centre, Aylett Nurseries Ltd, The Gardens Group, Klondyke Group, Scotsdales Garden Centres, Hillview Garden Centres, Notcutts Garden Centres, Haskins Garden Centres, Alton Garden Centre, Burleydam Garden Centre, Fresh@Burcot, Fosseway Garden Centre, Squires Garden Centres, Hillier Garden Centres.