Pest and Disease Control

Keep your garden safe from insects, birds, and more with Johnsons’ pest and disease control products. Our superb range has everything you need to protect your beloved flowers and shrubs from common garden pests and the problems they can cause – whether you’re dealing with slugs, insects, or grazing mammals.

Explore bug sprays, slug deterrents, nematode control products, and more, including wildlife-safe and environmentally-friendly options for sustainable gardening. We also carry a great selection of garden disease control products to help fight bacterial and fungal infections. Browse our complete range below.

68 products

Ecofective Plant Disease Defence Concentrate Refill

200ml Refill Code: 54687

£7.45

Grazers Cabbage Caterpillars & Aphids Deterrent Concentrate

350ml Code: 52981

£14.95

Vine Weevil Control Nematodes 12sq.m

1 packet, covers 12sq.m Code: 54113

£12.95

Grazers Butterfly & Caterpillars Spray 750ml and Concentrate 350ml

750ml Spray, 350ml Concentrate Code: 58100

£22.90

Whitefly Killer Spray & Concentrate Kit

500ml, 750ml Bottles Code: 58127

£21.90

Grazers Red Lily Beetle Concentrate

350ml Code: 53807

£14.95

SlugLess Slug & Snail Deterrent 20ltr

20ltr bag Code: 53747

£25.95

Whitefly Killer Spray

750ml Code: 57923

£11.95

Whitefly Killer Concentrate

500ml Code: 44636

£11.95

Box Moth Trap & Refill Pack

1 Trap, 1 Refill Code: 58128

£29.90

Box Moth Trap Refill

1 Refill Code: 57922

£10.45

Sciarid Fly (Fungus Gnat) Control Nematodes 12sq.m.

1 packet, covers 12sq.m Code: 54115

£12.95

Codling Moth Control Nematodes 60sq.m

1 packet, covers 60sq.m Code: 59003

£12.95

Carrot Root Fly Control Nematodes 60sq.m

1 packet, covers 60sq.m Code: 59001

£12.95

Cut Worm Control Nematodes 60sq.m

1 packet, covers 60sq.m Code: 59000

£12.95

Ecofective Bug Control Concentrate Refill

200ml Refill Code: 54685

£7.45

Ecofective Bug and Mildew Control Concentrate Refill

200ml Refill Code: 54684

£7.45

Offer

Garden-naturally Thrip Nematodes treatment with a watering can and 'Treatment Plus Applicator' text.

Thrip Nematodes & Sprayer Pack

Code:

£27.90

£24.49

Offer

Gardening naturally product with a hand holding a spray nozzle against a green background

Codling Moth Nematodes & Sprayer Pack

Code:

£23.90

£20.99

Offer

Gardening naturally product with a hand holding a spray nozzle on a grass background

Carrot Root Fly Nematodes & Sprayer Pack

Code:

£23.90

£20.99

Offer

Cut Worm Nematodes & Sprayer Pack

Code:

£23.90

£20.99

Offer

Garden treatment package with a hand holding a watering can on grass

Wire Worm Nematodes & Sprayer Pack

Code:

£25.90

£22.00

Offer

Gardening naturally product with a hand holding a spray applicator against a green background

Flea and Flea Beetle Nematodes & Sprayer Pack

Code:

£27.90

£24.99

Offer

Gardening naturally product with a hose and treatment applicator against a green background

Nematode All Purpose Fruit and Veg Protection & Sprayer Pack

Code:

£19.90

£17.99

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Explore Pest Control for Gardens

From slugs, aphids, and caterpillars to mildew and leaf spots, pests and diseases can cause devastating damage to vegetables and flowering plants. Our easy-to-use pest and disease control products are designed to effectively target insects, fungi, bacteria, and more, helping you fend off unwanted visitors without harming your plants. Why not take a look at our crop protection products too?

Buy Garden Disease Control Products Online

Whether you’re tending to beds and borders, planting hanging baskets, or growing a vibrant cutting garden, you’ll find all your gardening essentials at Johnsons. From pots and planters to soil improvers, we only stock the highest quality products to help you achieve beautiful results.