Maintain plant health with our plant pest and disease alerts and factsheets on the most common threats.
PEST & DISEASE FACTSHEETS
How to control rats on ornamental crops
Adjuvants: crops will benefit if the right adjuvants are added to the spray tank
How can ornamentals growers control sooty moulds?
Scale insects: the most vulnerable stage of the life cycle needs to be targeted
Sciarid and shore flies: frass from these pests reduces plant quality while feeding damage creates entry points for serious root diseases
Botrytis: protecting ornamentals crops from Botrytis
Leaf and stem nematodes: cultural controls and nursery hygiene are key to avoiding plant and bulb damage
Damping-off: what steps can growers take to keep it off the ornamentals nursery?
Spider mites: defences for protected and outdoor ornamentals against spider mites
Leaf miners: how growers can protect ornamentals crops from leaf miners
Takahashia japonica: cotton stringy scale insects' distinctive ovisacs could lower aesthetic value
Prunus bacterial spot/canker: this notifiable disease can inflict serious damage on all Prunus species
Tasmanian eucalyptus beetle: Eucalyptus trees face the risk of significant defoliation from a beetle that is expected to become established in the UK
Pepper weevil: sweet peppers, chilli peppers and other Solanaceae are at risk from this small but potentially devastating pest
Lemon tree borer: Wood-boring larvae of this beetle could wreak serious economic and environmental damage to native trees and shrubs
Red palm weevil: retailers and growers must beware of this highly invasive pest
Japanese beetle - chafer beetle poses a significant economic, social and environmental impact if it reaches the UK
Tomato brown rugose fruit virus: can inflict considerable yield losses in commercial tomato and sweet pepper production
Citrus longhorn beetle: this pest threatens to alter our rural, urban and garden landscapes for good
Two-lined chestnut borer: the arrival of this beetle would be another nail in the coffin of the UK's oak trees
PLANT HEALTH NEWS
CITES strike means more plant import delays
Latest science research: peat and moths
Second Hort Science Online (HSO 2) 2023 goes live
Most read horticulture stories this week
New apples R&D group to tackle woodlice and canker
New microbial inoculant - Vitalnova TriBoost - launched to benefit sustainable growing media mixes
CITES event to explain why cacti imports are being blocked
Sector leaders to present evidence to parliamentary horticulture enquiry
New strategy to protect from box tree caterpillars
Winners and losers this horticulture week
Agriculture needs fresh approach to tackle growing problem of insect resistance to biopesticides, new analysis finds
HortWeek survey: What are your biggest plant pest and disease threats?
OPM boundaries 2023 revealed
Solanum elaeagnifolium and S. rostratum potential hosts of tomato brown rugose fruit virus
'Charismatic beetle' found on supermarket potted fruit tree
RHS disease list shows drought impact
Thirteen countries ban import plant material affected by Xylella fastidiosa
OPM boundaries expanded to cover the main area of infestation
First breakthrough for exporting 'high-risk' plants post-Brexit
BCPs explained
Thérèse Coffey causes concern by wrongly saying Xylella has been found at a UK nursery
New Invasive Non Native Species (INNS) strategy in 11 points
Defra to expand oak processionary moth zone from March
John Adlam's Monthly Nursery Checklists
1 April - Aphids, bacterial infections and beetles
1 March - Adelgids, dianthus and field weeds
1 February - Aphids, bacteria, Botrytis and choisya
1 January - Cold stores, conifers and crinkling
1 December - Aphids, buffer zones and edible crops
1 November - Bud blindness, conifers and container weeds
1 October - Bedding, bacteria and biologicals
1 September - Algae, biocontrols and cultural work
1 August - Acanthus, conductivity and eelworm pests
1 July - Aphids, bark-boring beetles and camellias
1 June - Ash pests, box blight and downy mildew
1 May - Aphids, bees, capsids and caterpillars
EAMU MONTHLY ROUNDUPS
EAMU roundup: March 2023
EAMU roundup: February 2023
EAMU roundup: January 2023
EAMU roundup: December 2022
EAMU roundup: November 2022
EAMU roundup: October 2022
EAMU roundup: September 2022
EAMU roundup: July 2022
EAMU roundup: June 2022
EAMU roundup: April 2022
EAMU EXPIRY ALERT
EAMU authorisations that are due to expire by the end of July 2023.