Pest & Disease Management Factsheets

Factsheets with detailed information on how to recognise and deal with the the most common plant pests and diseases.

Pest & disease Factsheet - Powdery mildew

Pest & disease Factsheet - Powdery mildew

Accurate identification is key to tackling this serious plant disease.

Pest & Disease Management - Beetles

Pest & Disease Management - Beetles

There are more than a million beetle species, pests and beneficials, such as ladybirds, rove beetles and ground beetles. Depending on the species, adults can cause as much damage to ornamental plants and turf as larvae.

Pest & disease management - Aphids on protected crops

Pest & disease management - Aphids on protected crops

Rapid maturation and feeding damage on ornamental plants contribute to aphids' importance as pests.

Pest & Disease Factsheet - Downy mildew

Pest & Disease Factsheet - Downy mildew

This fungal disease relishes cool, humid conditions.

Pest & disease factsheet - leaf and stem nematodes

Pest & disease factsheet - leaf and stem nematodes

Eelworms can cause plant damage across a range of nursery stock, bulbs and herbaceous species.

Pest & Disease management - peach leaf curl

Pest & Disease management - peach leaf curl

Unsightly damage can affect fruit trees as well as ornamental plants, rendering them unsaleable.

Pest and disease management - Damping off

Pest and disease management - Damping off

Good site hygiene is crucial for effective control.

Notifiable pests & diseases

Notifiable pests & diseases

Import controls and nursery inspections are crucial tools for keeping stock healthy and enabling sales.

Pest & disease management - slugs and snails

Pest & disease management - slugs and snails

Minute teeth cause major damage to plant material.


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Pest & disease factsheet - Black root rot

Pest & disease factsheet - Black root rot

This disease caused by soil-dwelling fungus can impact a wide range of ornamental plant species.

Pest and disease factsheet - Scale insects

Pest and disease factsheet - Scale insects

The sedentary nature of feeding adult scale insects should make them a relatively easy pest to control but the difficulty lies in their waxy scales, which protect against predators and most contact insecticides.

Pest & Disease Factsheet - Rodenticides

Pest & Disease Factsheet - Rodenticides

Responsible use in ornamental horticulture.

Pest & Disease Management - Scab

Pest & Disease Management - Scab

Apple and pear trees are among those at risk

Pest & Disease Factsheet - Vine weevil

Pest & Disease Factsheet - Vine weevil

A serious pest of ornamental nursery stock.

Pest & Disease Factsheet - White mould

Pest & Disease Factsheet - White mould

Disease profile for field vegetable growers, by Professor Geoffrey Dixon.


Pest & Disease Management - Thrips

Pest & Disease Management - Thrips

These pests pose a threat to many crops worldwide.

Pest & Disease Factsheet - Puccinia allii

Pest & Disease Factsheet - Puccinia allii

Disease profile for field vegetable growers, by Professor Geoffrey Dixon

Pest and disease factsheet - Pear leaf blister mite

Pest and disease factsheet - Pear leaf blister mite

This widespread pear pest can also attack apple trees.

Pest & Disease Management - Box blight

Pest & Disease Management - Box blight

This disease causes leaves to turn brown and fall.

Pest & disease factsheet - Mycosphaerella brassicicola

Pest & disease factsheet - Mycosphaerella brassicicola

Disease profile for field vegetable growers, by Professor Geoffrey Dixon.

Pest and disease factsheet - Rust

Pest and disease factsheet - Rust

Infections can spread swiftly and damage crops.

Pest & disease factsheet - Botrytis

Pest & disease factsheet - Botrytis

Disease profile for field vegetable growers, by Professor Geoffrey Dixon.

Pest & Disease Management - Leptosphaeria maculans

Pest & Disease Management - Leptosphaeria maculans

Disease profile for field vegetable growers, by Professor Geoffrey Dixon.

Pest and disease factsheet - Leafhoppers, capsids & suckers

Pest and disease factsheet - Leafhoppers, capsids & suckers

More bugs surviving warmer winters can cause problems for nursery stock.

Pest & Disease Management - Grey mould: be alert to prevent damage

Pest & Disease Management - Grey mould: be alert to prevent damage

This disease compromises brassica, pea and bean field crop quality, Professor Geoffrey Dixon warns.

Pest & Disease Management - Downy mildews on field crops

Pest & Disease Management - Downy mildews on field crops

These pathogens are characterised by sporulating on the under-surfaces of leaves with chlorotic and necrotic areas found on the upper surfaces, writes Geoffrey Dixon.

Pest & Disease Management - Clubroot disease

Pest & Disease Management - Clubroot disease

Plasmodiophora brassicae can be a problem for all brassica varieties, Professor Geoffrey Dixon warns.

Pest & Disease Factsheet - Mealybugs

Pest & Disease Factsheet - Mealybugs

Heavy infestations of these sap-sucking pests can kill plants but preventive measures can be taken.

Pest & Disease Factsheet - Fungal leaf spots

Pest & Disease Factsheet - Fungal leaf spots

Fungal leaf spots are probably the most common of all plant diseases and on deciduous trees may appear dramatic -- such as acer tar spot - but do little long-term damage.

Pest & Disease Management - Lettuce downy mildew

Pest & Disease Management - Lettuce downy mildew

Bremia lactucae can be a major problem for field vegetable growers, Professor Geoffrey Dixon warns.

Pest & Disease Factsheet - Red thread

Pest & Disease Factsheet - Red thread

The risk of this fungal infection on sports and amenity turf can be lowered through careful management.

Pest & Disease Management - Aphids

Pest & Disease Management - Aphids

With their pear-shaped bodies, long antennae and a pair of rear-end siphunculi -- or exhaust pipes as they are sometimes described -- aphids are one of the most easily recognised and common glasshouse pests.

Pest & Disease Factsheet - Whiteflies

Pest & Disease Factsheet - Whiteflies

Whiteflies are sap-sucking insects that can be found in high numbers on protected crops. They can also attack outdoor crops including brassicas.

Pest & Disease Management - Sooty moulds

Pest & Disease Management - Sooty moulds

Sooty moulds can take up levels of management time out of all proportion to the actual damage that they do to plants.

Pest & Disease Management - Spider mites

Pest & Disease Management - Spider mites

The glasshouse red spider mite, also known as the two-spotted spider mite, is a troublesome pest of both protected and outdoor ornamentals.

Pest & Disease Management - Honey fungus

Pest & Disease Management - Honey fungus

With action difficult and labour intensive, accurate identification of this root disease is key to tackling infection.

Pest & Disease Management - Ash dieback

Pest & Disease Management - Ash dieback

Ash dieback is caused primarily by the fungal disease Chalara fraxinea. The number of infected trees in Europe has risen over the past few years, partly due to wet summer weather.

Pest & Disease Factsheet - Plane anthracnose

Pest & Disease Factsheet - Plane anthracnose

Foliage damage can render some plants unsellable.

Pest & Disease Factsheet - Caterpillars

Pest & Disease Factsheet - Caterpillars

The biting mouthparts of this large group of pests mean that all parts of the plant are at risk of attack.

Pest & Disease Management - Dutch elm disease

Pest & Disease Management - Dutch elm disease

Dutch elm disease is a fungal wilt spread by the elm bark beetles Scolytus scolytus and Scolytus multi-striatus.

Pest & Disease Management - Phytophthora ramorum

Pest & Disease Management - Phytophthora ramorum

Sudden oak death has caused extensive damage to a wide range of hosts on both sides of the Atlantic.

Pest & Disease Management - Fusarium patch

Pest & Disease Management - Fusarium patch

The most common and damaging pathogen on ornamental lawns and sports turf in the UK is the fungus Microdochium nivale (syn. Fusarium nivale).

Pest & Disease Management - Giant polypore

Pest & Disease Management - Giant polypore

This wood decay fungus can damage trees internally before any external evidence has been noticed.

Pest & Disease Management - Roe, fallow and muntjac deer

Pest & Disease Management - Roe, fallow and muntjac deer

Young shoots on plants are susceptible to grazing damage while bucks' antlers can harm bark.

Pest & Disease Management - Wild rabbits

Pest & Disease Management - Wild rabbits

The animal's fast reproduction makes eradication impractical, but cooperative effort can limit crop damage.

Pest & Disease Management - Beech bark disease

Pest & Disease Management - Beech bark disease

Beech bark disease is most likely to attack trees with trunks that are more than 20cm in diameter, although it can also be a problem on young plantations.

Pest and disease factsheet - Leaf miners

Pest and disease factsheet - Leaf miners

These larvae damage leaves on ornamental crops.

Pest & Disease Management - Tarsonemid and eriophyid mites

Pest & Disease Management - Tarsonemid and eriophyid mites

These two key groups can cause damage across a variety of ornamental crops.

Pest & Disease Management - Moles

Pest & Disease Management - Moles

Moles are widespread throughout Britain but absent from Ireland. Even small populations can damage sports turf, playing surfaces and amenity lawns, but control may not be necessary in less intensively used or managed areas.

Pest & Disease Factsheet - Cankers

Pest & Disease Factsheet - Cankers

Cankers in nursery stock species are characterised by the death of cambium tissue of woody stems, branches or twigs, causing them to sink in.

Pest and disease management - Sciarid fly

Pest and disease management - Sciarid fly

This pest can transmit a range of diseases.

Pest and disease management - Phytophthora root rots

Pest and disease management - Phytophthora root rots

Be alert to prevent damage from these pathogens.

Pest & Disease Management - Needle blights

Pest & Disease Management - Needle blights

Numerous conifer species are potentially at risk.

Pest & Disease Management - Wilt

Pest & Disease Management - Wilt

Poor husbandry, physical damage to roots and various diseases can all cause water deficit in leaves and non-woody stems of plants, leading to loss of turgor pressure in cells and flaccid tissues that we recognise as wilting.

Turf pests - Risks posed by leatherjackets and chafer grubs

Turf pests - Risks posed by leatherjackets and chafer grubs

Soil-dwelling larvae of chafer beetles and crane flies are serious turf pests, feeding unseen in the topsoil layer beneath lawns, golf courses and sports fields.

FERA PLANT PEST FACTSHEET: Banded-winged whitefly (Trialeurodes abutiloneus)

FERA PLANT PEST FACTSHEET: Banded-winged whitefly (Trialeurodes abutiloneus)

FERA PLANT PEST FACTSHEET: Lemon tree borer (Oemona hirta)

FERA PLANT PEST FACTSHEET: Lemon tree borer (Oemona hirta)

FERA PLANT PEST FACTSHEET: Blueberry gall midge (Dasineura oxycoccana)

FERA PLANT PEST FACTSHEET: Blueberry gall midge (Dasineura oxycoccana)

A serious threat to Lawson's cypress (Chamaecyparis lawsoniana) - Phytophthora lateralis

A serious threat to Lawson's cypress (Chamaecyparis lawsoniana) - Phytophthora lateralis

FERA PLANT PEST FACTSHEET: Phytophthora kernoviae

FERA PLANT PEST FACTSHEET: Phytophthora kernoviae

FERA PLANT PEST FACTSHEET: Potato flea beetles (Epitrix species)

FERA PLANT PEST FACTSHEET: Potato flea beetles (Epitrix species)

FERA PLANT PEST FACTSHEET: Wheat Bug (Nysius huttoni)

FERA PLANT PEST FACTSHEET: Wheat Bug (Nysius huttoni)

FERA PLANT PEST FACTSHEET: Eggplant Borer (Leucinodes orbonalis)

FERA PLANT PEST FACTSHEET: Eggplant Borer (Leucinodes orbonalis)

FERA PLANT PEST FACTSHEET: Citrus longhorn beetle  (Anoplophora chinensis)

FERA PLANT PEST FACTSHEET: Citrus longhorn beetle (Anoplophora chinensis)

Browntail and gypsy moths

Browntail and gypsy moths

Browntail and gypsy moth caterpillars can cause much damage to trees, but their risk to human health poses a bigger problem to local authorities.