Biological Pest Control Solutions

Practical biological pest control guidance for UK growers using beneficial insects, predatory mites, parasitoids, monitoring and integrated pest management. Use this hub to find crop pest solutions, compare beneficial insects and link through to BioWiki, crop guidance and decision-support tools.

The main pest groups covered include aphids, thrips, whitefly, spider mites, mealybug, vine weevil, leafminer, caterpillars, sciarid fly, slugs and spotted wing drosophila. Each solution focuses on practical control options, suitable beneficials, environmental conditions and how to fit biological control into a wider IPM programme.

Browse Pest Control Solutions

Aphid infestation with soft-bodied sap-feeding insects on plant foliage.

Aphid Control

Biocontrol strategies using ladybirds, parasitoids and mixes.

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Tomato Russet Mite Control

Microscopic russet mite causing bronzing and collapse of tomato foliage.

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Psyllid adult insect responsible for sap feeding and leaf cupping.

Psyllid Control

Sap-feeding pest causing leaf cupping, honeydew and distorted new growth.

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Shore Fly Control

Algae-associated fly leaving black spotting on leaves and growing surfaces.

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Tuta absoluta larval mine inside tomato leaf with characteristic blotch damage.

Tuta absoluta Control

Serious tomato leafminer causing blotch mines and fruit damage.

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Scale Insects Control

Wide range of soft and hard scale species causing sap loss, honeydew and plant decline.

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Root Aphid Control

Soil-dwelling aphids feeding on roots causing wilting, yellowing and poor nutrient uptake.

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Gall Mites Control

Microscopic eriophyid mites that induce galls, blisters and distorted plant tissue.

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Springtails Control

Soil-dwelling detritivores sometimes mistaken for root pests.

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Capsid Nymphs Control

Juvenile capsid bugs causing distortion, scarring and aborted growth.

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Two-Spotted Spider Mite (Tetranychus urticae) Control

Highly damaging mite causing bronzing, webbing and rapid population growth.

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Carmine Spider Mite (Tetranychus cinnabarinus) Control

Red morph spider mite with strong webbing and heat tolerance.

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Fruit Fly (Drosophila spp.) Control

Small vinegar flies attracted to fruit, compost and fermentation by-products.

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Beetle Larvae (Chafer Grubs & Vine Weevil Grubs) Control

Soil-dwelling larvae feeding on roots, causing severe wilting and plant loss.

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Wireworm (Agriotes spp.) Control

Soil-dwelling click beetle larvae feeding on roots, tubers and young plants.

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Swift Moth Larvae (Ghost Moths, Hepialidae) Control

Large soil-dwelling larvae feeding on roots and crowns, causing severe wilting.

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Thrips adult causing silvering and streak damage on leaf surface.

Thrips parvispinus Control

Highly invasive thrips species causing scarring, distortion and rapid crop damage.

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Leatherjackets (Crane Fly Larvae) Control

Soil-dwelling crane fly larvae that feed on roots and collars, causing wilting and turf loss.

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Tomato Leafminer Fly (Liriomyza bryoniae) Control

Leafmining fly causing serpentine tunnels in tomato and related crops.

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Bulb Mites (Rhizoglyphus spp.) Control

Soil and bulb-dwelling mites feeding on bulb tissue, roots and basal plates.

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Green Peach Aphid (Myzus persicae) Control

Polyphagous aphid species attacking many crops and transmitting viruses.

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Black Bean Aphid (Aphis fabae) Control

Dark aphid species attacking beans, ornamentals and many field crops.

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Potato Aphid (Macrosiphum euphorbiae) Control

Large aphid species found on potatoes, tomatoes and ornamentals.

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Allium Leaf Miner (Phytomyza gymnostoma) Control

Leafmining pest of leeks, onions and other alliums causing distorted foliage and rotting stems.

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Pepper Weevil (Anthonomus eugenii) Control

Serious pest of peppers and chillies, damaging buds, flowers and fruit.

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Rust Mites (Eriophyid Mites) Control

Microscopic mites causing russeting, bronzing and leaf deformity on fruit and ornamentals.

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Sciarid Larvae (Fungus Gnat Larvae) Control

Soil-dwelling larvae feeding on roots, algae and organic matter in propagation media.

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Cabbage White Caterpillars Control

Chewing larvae of cabbage white butterflies causing holes and skeletonised brassica leaves.

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Chrysanthemum Leafminer (Phytomyza syngenesiae) Control

Leafminer causing serpentine mines in chrysanthemum and related ornamentals.

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Broad Bean Beetle (Bruchus rufimanus) Control

Seed beetle attacking developing broad beans and reducing seed quality.

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Aphid Winged Alates Control

Winged dispersal stage of many aphid species often seen colonising new crops.

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Slugs (Arion species) Control

Medium to large slugs feeding on leaves, stems and seedlings in damp conditions.

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Slugs (Deroceras species) Control

Smaller, often faster-moving slugs attacking young plants and low foliage.

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Pepper Thrips Control

Thrips species attacking peppers and ornamentals, causing scarring and bronzing.

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Root Mealybug Control

Hidden soil-dwelling mealybugs feeding on roots and crowns of ornamentals and container crops.

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Tobacco Whitefly (Bemisia tabaci) Control

Highly invasive whitefly species capable of virus transmission and resistant to many pesticides.

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Western Flower Thrips (Frankliniella occidentalis) Control

Major thrips pest of protected crops, causing silvering, bronzing and virus transmission.

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Onion Thrips (Thrips tabaci) Control

Thrips species attacking onions, leeks and salads, causing silver streaks and reduced yield.

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Green Leafhopper Control

Small green leafhoppers causing hopper burn, yellowing and reduced vigour.

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Box Psyllid (Psylla buxi) Control

Sap-feeding pest of box plants causing cupping and distorted foliage.

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Pea & Bean Weevil (Sitona lineatus) Control

Weevil pest of peas and beans causing notching on leaves and root nodule damage.

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Black Vine Thrips (Hercinothrips femoralis) Control

Dark thrips species damaging foliage of ornamentals and pot plants.

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Tomato Pinworm (Keiferia lycopersicella) Control

Leaf and fruit boring moth pest of tomatoes, causing mines and galleries.

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Sciarid Fly (Bradysia impatiens) Control

Common fungus gnat species in propagation and pot crops.

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Woolly Beech Aphid (Phyllaphis fagi) Control

Woolly aphid forming cottony colonies on beech leaves and shoots.

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Gall Midges (Cecidomyiidae) Control

Small flies whose larvae cause galls, blisters or distortion on leaves and shoots.

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Mussel Scale (Lepidosaphes ulmi) Control

Armoured scale insect forming mussel-shaped covers on bark and twigs.

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Codling Moth (Cydia pomonella) Control

Key fruit moth pest causing “maggoty” apples and pears.

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Winter Moth (Operophtera brumata) Control

Defoliating moth of fruit trees and ornamentals whose larvae feed in spring.

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Chafer Grubs (Garden Chafer & Cockchafer) Control

Soil-dwelling white grubs feeding on roots in turf and nursery stock.

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Spotted Wing Drosophila Control

Monitoring and IPM guidance for spotted wing drosophila in soft fruit and cherry crops.

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Pear Sucker Control

Pear sucker (pear psylla) biological control and IPM guidance.

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Most Used Biological Control Guides

Aphid Control

Use parasitoids, predators and crop hygiene to manage aphid colonies before populations spread.

Aphid control →

Thrips Control

Plan predatory mites, Orius and monitoring around flowering, temperature and crop risk periods.

Thrips control →

Spider Mite Control

Use early detection, humidity management and predatory mites before webbing develops.

Spider mite control →

Whitefly Control

Combine Encarsia, Eretmocerus, predatory mites and monitoring for glasshouse whitefly programmes.

Whitefly control →

Vine Weevil Control

Target larvae with nematodes and predatory mites while monitoring adult feeding damage.

Vine weevil control →

SWD Control

Monitor spotted wing drosophila in soft fruit and cherry crops using traps, hygiene and crop timing.

SWD control →

Browse Biological Control by Crop

Crop pages help connect pest pressure with real growing situations, including soft fruit, protected crops, herbs, ornamentals and tree fruit.

Strawberries

Thrips, aphids, spider mites, whitefly, SWD and crop hygiene.

Strawberry IPM →

Tomatoes

Whitefly, leafminer, aphids, spider mites and protected crop IPM.

Tomato IPM →

Cucumbers

Thrips, spider mites, aphids and whitefly in warm glasshouse crops.

Cucumber IPM →

Raspberries

Aphids, mites, SWD and biological control planning in cane fruit.

Raspberry IPM →

Ornamentals

Mixed pest programmes for protected ornamental and nursery crops.

Ornamental IPM →

Herbs

Low-residue pest management for edible herbs and protected production.

Herb IPM →

Popular Beneficial Insects and Predators

Learn how commonly used beneficial insects fit into biological pest control programmes. These pages explain what each beneficial targets and where they are most useful.

Orius

Predatory bugs used mainly for thrips, with useful activity on small soft-bodied pests.

Orius BioWiki →

Anthocoris

Predatory bugs useful against aphids, psyllids and small larvae in suitable crops.

Anthocoris BioWiki →

Aphidius

Parasitoid wasps used for aphid control within protected and outdoor IPM programmes.

Aphidius BioWiki →

Encarsia

Classic whitefly parasitoid used in protected crops and long-term whitefly programmes.

Encarsia BioWiki →

Predatory Mites

Key beneficials for thrips, spider mites, sciarid fly and soil-dwelling pests.

Predatory mites →

Biopredator Tools

Use the tools below alongside the solution pages to identify pests, compare biological control options, plan release timing and assess pest pressure risk.

Pest Identification

Use simple symptoms and crop signs to narrow down likely pest problems.

Open Pest ID →

Biocontrol Selector

Compare beneficial insects and biological options by pest and conditions.

Open selector →

Release Planner

Plan biological releases using pest pressure, crop stage and programme timing.

Open planner →

IPM Risk Engine

Assess pest risk using environmental and crop-pressure indicators.

Open risk engine →

Weather

Check weather conditions that may influence pest pressure and beneficial activity.

Open weather tool →

BioWiki

Read background pest and beneficial insect information without product bias.

Open BioWiki →

How to Use This Hub

Start with the pest solution page if you already know the problem. If you are unsure, use the pest identification tool first. For crop-specific planning, move from the pest page into the relevant crop page, then use the release planner or biocontrol selector to compare suitable biological control options.

Biological control works best when releases are timed early, pest monitoring is regular, environmental conditions are suitable and chemical disruption is avoided where possible. The solution pages are designed to connect these decisions together rather than treating each beneficial insect or pest in isolation.