18 February 2021 - New Measures Announced

HTA has produced guidance & a Q&A document on the strengthened measures for importing  Xylella fastidiosa, which will come into force on the 4 March 2021

Information Pack

The HTA has compiled an Information Pack containing information on what Xylella is, information on plant passporting, a poster for use in your business, and various other tools.

Some members have been using the information within this document to hold cluster meetings with relevant businesses within their 5km radius to promote best practice and working together to help reduce the threat.  This can be downloaded here.

The HTA has also produced an infographic showing host plants for the various Xylella fastidiosa subspecies. Please click below to download a pdf of the graphic for printing and veiwing.


APHA have also produced a 'Don't Risk It' poster for garden centres to display to advise customers against bringing home plants from trips abroad. 

Guidance on sourcing plant material

For Retailers, Landscapers, Growers, Designers and all dealing with plants in a professional capacity

What is the threat?

Xylella fastidiosa is one of the most harmful bacterial plant diseases in the world. It can cause severe losses in a wide range of hosts and there would be a massive impact on the plant trade across all business sectors in the event of an outbreakin the UK.

An outbreak of this disease, where several different plants are infected, will trigger immediate stock destruction within 100 metres and a movement ban of host plants within a 5-kilometre radius for up to five years. This will dramatically and immediately affect most plant selling operations, as well as impacting on all businesses dealing in plants within the 5km zone. Gardens could also be affected.

Watch the Xylella video resource below to find out more about Xylella and the plant passport scheme.


What should businesses do to stop it coming into the UK?

Only buy potential host plants from trusted plant passported suppliers who know where their plants come from. We strongly recommend that potential host plants are not sourced from or near regions where there have been findings of Xylella fastidiosa. Current demarcated areas can be seen at: http://ec.europa.eu/food/sites/food/files/plant/docs/ph_biosec_legis_list-demarcated-union-territory_en.pdf

The list of host plants is growing and includes many popular garden and landscape plants, such as lavender, rosemary, oak and many others. The current list of confirmed hosts by DEFRA is available on the Plant Health Portal.

Also, the complete EU list can be read here 

What happens if the disease is found in the UK?

The full emergency measures imposed at UK level are only triggered when the disease has spread and there is an OUTBREAK.

The full emergency measures are not triggered if the disease is found on a single plant or within a batch of plants and is diagnosed and contained before it spreads. This is known as an INTERCEPTION. Stock will still be destroyed in this circumstance but the movement ban is very unlikely to come in force.

Additional UK measures have been now been announced by Defra that come into force on 4 March 2021  Find out about these on the Plant Health Portal and also read HTA's guidance document:

Xylella Responsible Sourcing Statement

Following on from the HTA Ornamentals Management Committee meeting on Thursday 13 July 2017, and a retailer xylella meeting on Thursday 27 July 2017, several businesses agreed on the following statement:

“We 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. ”

The businesses signed up as agreeing to the statement are;


  • Abbotsbury Sub Tropical Gardens
  • A & E Bridgen & Son Ltd.
  • Agrumi Ltd.
  • Allensmore Nurseries Ltd.
  • Alton Garden Centre
  • Amethyst Horticulture
  • Anglo Aquatic Plant

  • Armless Nureries

  • Ashridge Trees Ltd.
  • Aylett Nurseries Ltd
  • Ball Colegrave
  • Barters Farm Nurseries
  • Barton Grange Garden Centre
  • Batsford Arboretum & Garden Centre
  • Baytree Nurseries and Garden Centre
  • Beaver Plants
  • Bell Plantation Ltd
  • Bents Garden & Home
  • Ben Reid Garden Centre and Nursery
  • Benary
  • Bernaville Nurseries
  • Bickerdikes Garden Centre
  • Blackbrooks Garden Centre
  • Blackdown Garden Centre
  • Blackmoor Nurseries
  • Blue Diamond Garden Centres
  • Blue Ribbon Plants
  • Boningale Nurseries 
  • Bosworths Garden Centre
  • Bowhayes Trees
  • Bransford Webbs Plant Company
  • Bridge Nursery
  • Bryant’s Nurseries Ltd
  • Burford Garden Company
  • Burleydam Garden Centre
  • Burston Garden Centre
  • C.W Groves & Son Ltd
  • Cadeby Tree Trust
  • Capital Gardens Centres
  • Carnon Downs Garden Centre
  • CGJ Mathias & Son (Nurseries)

  • Channel Island Plants (UK) Ltd
  • Chapel Cottage Plants Ltd
  • Chessington Garden Centre
  • Christies of Fochabers Ltd
  • ClassifloraZelari
  • Cleeve Nursery and Garden Centre
  • Cobbins Nursery Ltd
  • Coolings Green & Pleasant Ltd.
  • Coolings Nurseries Ltd.
  • Country Garden Plant Sales Ltd.
  • Country Herbs & Plants Ltd.
  • Cowell's Garden Centre
  • Craigmarloch Nurseries Ltd
  • Creative Gardens (NI) Limited
  • Creepers Nursery
  • Darby Nursery Stock Ltd.
  • David Austin Roses Ltd.
  • De Ree UK Ltd.
  • Dean's Garden Centre

  • Deepdale Trees Ltd.

  • Dibleys Nurseries
  • Diderk Heinje Nursery
  • Dobbies Garden Centres
  • Dorset Plant Company
  • Double HH Nurseries Ltd.
  • Duchy of Cornwall Nursery
  • Earley Ornamentals
  • Earthstone Landscapes
  • Europlants UK Ltd
  • Evergreen Exterior Services
  • Evergreenhedging.com


  • Fairways Garden Centre
  • Fairweather’s
  • Farplants Group
  • Ferndale Garden Centre
  • F. Morrey & Son
  • Flamingo Plants (formerly Butters Group)
  • Florna Plants Ltd.
  • Floranord

  • Florensis

  • Forest Lodge Garden Centre
  • Fosseway Garden Centre
  • 4th Corner Ltd.
  • Frank P Matthews Ltd.
  • Fresh @ Burcot
  • Fron Goch Garden Centre
  • Frosts Garden Centre Group
  • Garden Centre Fresh
  • Garden Centre Plants
  • Garden House Design
  • Garden Style Plant Centre
  • Garden Wise (Dumfries) Ltd.
  • Gardeners Kitchen Ltd

  • Gardentime
  • Garsons Garden Centres 
  • Gates Garden Centre
  • Gedney Bulb Company Ltd

  • Glendale Horticulture
  • Glendoick Garden Centre
  • Golden Grove Nursery
  • Gordale Garden Centre
  • G Palmer and Son Nurserymen Ltd.
  • Greatfield Nurseries and Garden Centre
  • Greenshutters Nurseries & Garden Centre
  • Grovewell Garden Centres
  • Growforth Ltd.
  • Guernsey Clematis Nursery Ltd

  • H A TRIM

  • Halls of Heddon
  • Happy Plant Garden Centre
  • Harling’s Garden Centre

  • Haskins Garden Centres
  • Hawkesmill Nurseries

  • Hayes Garden World
  • Haywood Landcapes Ltd

  • Henry Street Garden Centre
  • Highfield Garden World
  • Hillier Nurseries and Garden Centres
  • Hillview Garden Centres
  • Hortus Loci Ltd
  • Hollybush Nurseries Ltd.
  • Holywell Lane Plants
  • HSK Gardening and Leisure

  • Infinity Christmas Trees

  • The Jadecliff Group

  • James Coles and Sons (Nurseries) Ltd.
  • James McIntyre & Sons

  • Javado UK
  • J & A Grower Ltd.
  • John Richards Nurseries Ltd.
  • Johnsons of Whixley
  • Joseph Rochford Gardens Ltd


  • Kapiteyn Bv
  • Kernock Park Plants Ltd
  • Kershaw's Garden Centre
  • Key Essentials Ltd
  • Kieft & Sons Ltd
  • Kilworth Conifers
  • Kingsdown Nurseries
  • Klondyke Group
  • Knights Garden Centre
  • KRN House and Garden Plants
  • Langlands Garden Centre’s
  • Larch Cottage Nurseries

  • Lay of the Land Garden Centre
  • Linden Garden Centre
  • Liss Forest Nursery Ltd.
  • Living Landscapes Ltd.
  • L. J. Smith & Son
  • Loch-hills Plant Centre
  • Longstock Park Nursery
  • Lovania Nurseries Ltd.
  • Lowaters Nursery
  • Majestic Trees
  • Malmesbury Garden Centre
  • Marchants Nursery

  • Marlows Home and Garden Ltd
  • Mayberry Garden Centre
  • Mclaren's Nurseries
  • Meadow Croft Garden Centre
  • Mere House Nursery

  • Merryhatton Garden Centre
  • Millais Nurseries

  • Moles Seeds (UK) Ltd

  • Monkton Elm Garden Centre
  • Morley Nurseries Ltd.
  • Mr Fothergill’s Seeds Ltd
  • Mulberry Plants Wholesale Nursery
  • Needlefresh
  • New Hopetoun Gardens
  • The Newey Group
  • Newleaf Plants
  • Newquay Garden Centre
  • Norfolk Herbs
  • The Norfolk Olive Tree Company LTD

  • North Hill Nurseries
  • Notcutts Garden Centres
  • Oakgate Garden Centre LLP

  • Oakover Nurseries Ltd.
  • O A Taylor & Sons Bulbs Ltd
  • Orchard Park Garden Centre

  • Osberton Nurseries Ltd.

  • Otter Garden Centres


  • Pacific Nurseries

  • Palmers at Ullesthorpe Ltd.

  • Palmstead Nurseries

  • Paradise Park

  • Parkers Flixton Garden Centre

  • Parkers Mottram Garden Centre

  • Parkers Anwick Garden Centre

  • Parker's Nurseries

  • Pengelly Garden Centre

  • Pennells Garden Centres

  • Pentland Plants

  • Perryhill Nurseries Ltd.

  • Perrywood Garden Centre

  • Pershore College Nurseries & Pershore College Plant Centre

  • Peter Beales Roses Ltd.

  • Peter Eastwood Plants Ltd

  • Pickmere Nursery

  • Planters Garden Centre

  • Plants for Europe Ltd.

  • Plants Limited

  • Plymouth Garden Centre

  • Poplars Garden Centre Ltd.

  • Pople Garden Centres Ltd.

  • Premium Christmas Trees

  • Profit Plant U.K.

  • Provender Nurseries

  • P & R Garden Supplies

  • Q Gardens Ltd

  • Quality Ornamentals

  • Raemoir Garden Centre

  • Raglan Garden Centre

  • Rainbow Nursery (Weeley) LLP

  • Ransoms Garden Centre

  • RHS Retail

  • Robert Morton & Sons

  • Robin Tacchi Plants

  • Rumwood Nurseries & Garden Centre

  • Ruxley Manor Garden Centre

  • Ruxley Nursery

  • R V Roger Nurserymen

  • Savin Nurseries

  • Scotsdales Garden Centres

  • Seiont Nurseries Ltd.

  • Shallowmead Nurseries Ltd

  • Simpsons Garden Centre

  • Smiths Nurseries

  • Southdown Landscapes & Turf Co.

  • South Downs Nurseries

  • Squires Garden Centres

  • Stewarts Garden Centres

  • Stratford Garden Centre

  • St Peters Garden Centre

  • Stone Cross Nurseries Ltd

  • Summerhill Garden Centre

  • Sunshine Garden Centre

  • Suttons Nurseries

  • Syngenta FloriPro Services


  • The Gardens Group

  • The Mains of Drum Garden Centre

  • The Millbrook Garden Company Ltd.

  • The Old Railway Line Garden Centre Ltd.

  • The Plant Yard

  • Thetford Garden Centre Ltd

  • Thirsk Garden Centre

  • Thompson & Morgan

  • Thompsons Plant and Garden Centres

  • Threaplands Landscaping and Garden Centre

  • Thurrock Garden Centre

  • Trade Roots Horticultural Sales Ltd

  • Treetop Landscapes Ltd.

  • Tyne Valley Nuseries Ltd.

  • Van Arnhem Nursery Ltd.

  • Van Hage Garden Centres

  • Volmary

  • W D Smith & Son

  • Webbs Garden Centres

  • WeeTree Wholesale Nurseries

  • Wensleydale Garden Centre

  • West Kington Nurseries

  • West Somerset Garden Centre Ltd.

  • Whartons Nurseries Ltd.

  • Whetman Pinks Ltd

  • Whitehall Garden Centres

  • Woodgate Nursery

  • Woodlark Nurseries Ltd.

  • Woodthorpe Hall Garden Centres Ltd.

  • Worfield Plants

  • Wyeplants Ltd.

  • Wyevale Nurseries

  • Wykeham Mature Plants

  • Yorkshire Plants

If you wish to add your company name to the list, please email Policy@hta.org.uk with confirmation that you agree to the statement.

The HTA Tree and Hedging Group agreed to a stronger statement at their AGM and Conference in June, agreeing not to knowingly purchase any plants from regions where the disease Xylella is known to exist. This has also been adopted by some additional companies and these all include:

  • Bernhard's Nursery
  • British Hardwood Tree Nursery Ltd.
  • Castle Howard Estate Ltd
  • Chew Valley Trees
  • Christie-Elite Nurseries Ltd.
  • Deepdale Trees Ltd.
  • English Woodlands
  • Forestart Ltd
  • Heathwood Nurseries
  • Hillier Tree Nursery
  • Hopes Grove Nurseries
  • J A Jones
  • J&A Growers Ltd
  • James Coles and Sons (Nurseries) Ltd.
  • Johnsons of Whixley Ltd
  • Majestic Trees
  • Oakover Nurseries Ltd
  • Smiths Nurseries
  • Thorpe Trees
  • Van Arnhem Nursery Ltd.
  • Wee Tree Wholesale Nurseries
  • Wyevale Nurseries

More information on Xylella can be found on the Plant Health Portal and below

Xylella fastidiosa Implications for importers and users of trees, shrubs and herbaceous plants - Update 12