10 Best Organic Insecticide For Plants in The UK

Last updated on 12/08/2025

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Weedkil Bug & Mildew Plant Control 1L - Bug & Fungus Spray For Plants, Flowers, Fruits & Veg - Child & Pet Friendly | Organic, Natural Ingredients - Ready To Use

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Why We Love It

Safe for children, pets, bees.
Effective on various pests.
Nourishes plants, promotes growth.

Main Highlights

❀ UNIVERSAL BUG & MILDEW CONTROL- Weedkil Bug Control is an all natural, organic, pesticide free spray that is most effective for fast acting control against a wide range of pests including, Aphids, Whitefly, Greenfly, Blackfly, Red Spidermites & Powdery Mildew.
❀ CHILD, PET & BEE SAFE: If you've been looking for a bug and fungus control spray that is organic, safe and pesticide free, then your search is over! That's because our product is made using natural ingredients unlike the conventional chemical based sprays, which means it poses no harm to children, pets and wildlife once dried.
❀ SAFE FOR USE ON FLOWERING AND EDIBLE PLANTS: Our solution is ideal for use on ornamental and edible crops, including flowers, shrubs, fruit and vegetables. The formula also provides nourishment to encourage healthy plant growth and promote abundant fruit, vegetables and vibrant flowers. No harvest interval is required, meaning the produce can be eaten within hours after application
❀ FUNGUS, PLANT & BUG CONTROL SPRAY MADE IN THE UK: Our product is made in the UK which means that we are guaranteed by the highest standards in the world. Shake well before application. Apply thoroughly to upper and lower leaf surfaces. Re-application can be applied weekly to keep full control of the pests. Wash hands after use.
❀ 30-DAY MONEY BACK GUARANTEE - If you are not pleased, send us a message with your order number and we will reimburse your entire purchase. We value our customers and we stand behind all of our products. Expect a refund with no questions asked.

SB Plant Invigorator Pesticide & Natural Pest Control | Non-Toxic, Bee Friendly Garden Treatment | Safe for Vegetables & Ornamentals (500ml Makes 50L)

Why We Love It

Biodegradable and non-toxic formula.
Safe for bees and birds.
Use year-round, no interval.

Main Highlights

NATURAL & EFFECTIVE PEST CONTROL: Our pesticide delivers professional-grade pest control without harmful chemicals. Effective against common garden pests such as whitefly, aphids, spider mites, mealybugs, scale, and psyllids. Safe for edible crops, with NO harvest waiting period, so you can enjoy pest-free produce without worry.
BEE FRIENDLY & ENVIRONMENTALLY SAFE: Unlike conventional pesticides, our plant pest control solution is biodegradable, non-toxic, and safe for bees and other beneficial pollinators. Protect your garden and the environment at the same time.
MULTI-PURPOSE PLANT PROTECTION: Works as both a pest control and mildew treatment. Whether you're protecting your vegetables, fruits, herbs, or ornamental plants, SB Plant Invigorator provides year-round protection for all your garden needs, both indoors and outdoors.
INVIGORATES YOUR PLANTS: The plant invigorator formula doesn’t just control pests—it also nourishes your plants, leaving them with healthier, shinier foliage. Unlike chemical treatments, this physical mode of action ensures pests cannot develop resistance, giving you long-term effectiveness.
ECONOMICAL CONCENTRATE: A 250ml bottle makes 25 litres of ready-to-use solution, offering an affordable, high-quality solution for both professional growers and home gardeners. One bottle covers a lot of ground—making it the best value for your garden.

Potassium Soap - Horticultural Soap - Organic Insecticide - Aphid Control - Pest/Bug Spray 0.5L

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Why We Love It

Combats pests naturally and effectively.
Cleans gardening tools thoroughly.
Environmentally safe and biodegradable.

Main Highlights

helps to combat and prevent the most common pests, such as, aphids, earwigs, red spider mite..
naturally and effectively cleans gardening tools, pots and surfaces
natural, effective, biodegradable, and safe for the environment and its inhabitants
has a beneficial effect in removal of sooty mold, honeydew and other leaf fungi
is a secondary source of potassium for plants

DD Organic Neem Oil A Natural Garden Bug Spray for Plants & Horses - Insect Repellent & Bug Repellent for House, Skin Care, Hair Growht 500ML TRIGER Spray

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Why We Love It

Effective against various pests.
Anti-fungal and repellent properties.
Enhances grooming, low toxicity.

Main Highlights

Insecticidal Properties: Neem oil acts as an effective insecticide and helps control a wide range of pests, including aphids, whiteflies, mealybugs, scale insects, and more.
Fungicidal Properties: Neem oil is also known for its antifungal properties, making it effective in controlling fungal diseases such as powdery mildew and leaf spot.
Mane and Tail Detangler: DD Neem oil can be applied to the horse's mane and tail to help detangle and condition the hair, making grooming easier and reducing breakage.
Repellent Action: Neem oil has repellent properties that discourage pests from feeding on plants.
Low Toxicity to Humans and Animals: Neem oil is considered to have low toxicity to humans and animals when used as recommended. However, it's essential to follow the instructions on the product label.

Natural Garden Solutions

Natural Garden Solutions Organic Plant Bug Spray Fruit Vegetables Flowers Bee Friendly Pest Control Greenfly Blackfly Aphids Whitefly Spider Mites Mealybugs Scale Mildew Indoors Outdoors 500ML

35% OffFree Shipping

Why We Love It

Bee-friendly and chemical-free solution.
Effective against various plant bugs.
Safe for indoor and outdoor use.

Main Highlights

🌻 CONTROLS PLANT BUGS: Natural Garden Solutions Plant Bug Spray is a 100% natural solution to combat bugs which are attacking your plants. It is effective against greenfly, blackfly, whitefly, aphids, spidermites, mealybugs, scale and mildew.
🌻 EFFECTIVE, SAFE & BEE FRIENDLY 🐝: Natural Garden Solutions Plant Bug Spray is - as the name suggests - safe. It is 100% natural and plant and fruit based. It contains no chemicals, no additives, and is alcohol free, paraben free and cruelty free. Safe for you, your plants, bees 🐝, your pet and the planet. Just a couple of sprays will do the trick.
🌻 SAFE TO USE OUTDOORS AND INDOORS: Natural Garden Solutions Plant Bug Spray is safe to use on all indoor plants and outdoor plants. As it contains no chemicals it is ideal for using on fruit and vegetables. Safe to use around pets and children.
🌻 OUR ETHICAL COMMITMENT: Natural Garden Solutions Plant Bug Spray is proudly made in the UK. We pride ourselves on using 100% natural ingredients and are committed to social and environmental responsibility. All our ingredients are 100% natural, alcohol free, paraben free, chemical free, additive free, and cruelty free. Safe for you, your plants, your pet and the planet
🌻 OUR ENVIRONMENTAL COMMITMENT: We support environmental conservation and recycling. Please dispose of this plastic bottle responsibly after use. The HDPE2 bottle is recyclable in the plastic recycling collections offered by local authorities. Safe for you, your plants, your pet and the planet.

Horticultural Liquid-Soap Potassium Organic Insect Control Aphid Control Pest Natural: Safe for Fruit Veg - Pets. Now in New easy to use bottle

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Why We Love It

Natural and eco-friendly formula.
Effective on garden pests.
Versatile for year-round use.

Main Highlights

Now with new easy to use 750ml Bottle
Potassium Soap
Horticultural Soap
Garden Pest Control
Winter Tree Wash
Natural Bug Killer

Insecticidal Soap Spray for Plants 200ml – Natural Pest Control for Indoor & Outdoor Use – Kills Aphids, Spider Mites, Whiteflies and More – Natural Insecticide for Houseplants, Vegetables and Gardens

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Why We Love It

Effective natural pest control.
Safe for all plant types.
Biodegradable and eco-friendly formula.

Main Highlights

Effective Natural Pest Control: Our Insecticidal Soap Spray is a powerful, natural insecticide made from potassium salts and natural soya oils, eliminating pests such as aphids, spider mites, whiteflies, and thrips. It’s safe for use on indoor and outdoor plants, fruits, vegetables, and ornamental plants.
Safe for Indoor & Outdoor Plants: This plant insecticide spray is perfect for houseplants and gardens alike. Use it to protect a wide range of crops, including fruits, berries, vegetables, trees, and flowers. Safe to use up to the day of harvest, making it ideal for gardening.
Kills a Wide Range of Pests: The spray effectively controls a variety of plant-damaging insects, including greenflies, scale insects, sawfly larvae, and more. Ideal for aphid killer and spider mite control, ensuring your plants stay healthy and free from infestations.
Easy to Use Spray Formula: Our Insecticidal Soap Spray comes in a ready-to-use 200ml bottle. Simply shake well and spray directly onto affected areas of your plants. Reapply as needed for continued protection and pest control. The biodegradable formula breaks down naturally, keeping plants and the environment safe.
Biodegradable & Eco-Friendly: Made from natural, biodegradable ingredients, this spray is free from animal and fish oils. It’s an eco-friendly solution to pest control that works as a bee-friendly insecticide, ensuring your plants and the environment are protected.

SB Plant Invigorator Pesticide & Natural Pest Control | Non-Toxic, Bee Friendly Garden Treatment | Safe for Vegetables & Ornamentals (500ml Makes 50L)

Why We Love It

Safe for birds and bees.
Non-toxic chemical-free protection.
Pests won’t develop resistance.

Main Highlights

NATURAL & EFFECTIVE PEST CONTROL: Our pesticide delivers professional-grade pest control without harmful chemicals. Effective against common garden pests such as whitefly, aphids, spider mites, mealybugs, scale, and psyllids. Safe for edible crops, with NO harvest waiting period, so you can enjoy pest-free produce without worry.
BEE FRIENDLY & ENVIRONMENTALLY SAFE: Unlike conventional pesticides, our plant pest control solution is biodegradable, non-toxic, and safe for bees and other beneficial pollinators. Protect your garden and the environment at the same time.
MULTI-PURPOSE PLANT PROTECTION: Works as both a pest control and mildew treatment. Whether you're protecting your vegetables, fruits, herbs, or ornamental plants, SB Plant Invigorator provides year-round protection for all your garden needs, both indoors and outdoors.
INVIGORATES YOUR PLANTS: The plant invigorator formula doesn’t just control pests—it also nourishes your plants, leaving them with healthier, shinier foliage. Unlike chemical treatments, this physical mode of action ensures pests cannot develop resistance, giving you long-term effectiveness.
ECONOMICAL CONCENTRATE: A 250ml bottle makes 25 litres of ready-to-use solution, offering an affordable, high-quality solution for both professional growers and home gardeners. One bottle covers a lot of ground—making it the best value for your garden.

Garten Glück Neem Oil Spray - 250ml - Organic Neem Oil with Peppermint & Rosemary for Indoor & Outdoor Plants - Supports Healthy Leaves & Soil - Ideal for Plant Care & Bug Control, Made in Germany

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Why We Love It

Promotes plant health and growth.
Effective, low-toxicity insect repellent.
Premium-quality, German-made product.

Main Highlights

PERFECT PLANT CARE: Maintain your plants' health and natural shine with our organic Neem Oil spray. Enriched with Peppermint and Rosemary Oils, it’s a natural alternative to nastier treatments for vibrant, thriving plants.
MULTI-TARGET ACTION: Tackle common plant challenges like aphids, whiteflies, mealybugs, powdery mildew, and Leaf Spot with our Neem Oil spray. Its low-toxicity formula makes it safe and eco-conscious, supporting both indoor and outdoor greenery.
EASY-TO-USE FORMULA: Spray generously as part of your regular plant care routine. The biodegradable formula ensures quick breakdown without harming plants. Reapply every few days for consistent care and protection.
UNIVERSAL PLANT SOLUTION: Whether you're tending houseplants or outdoor gardens, our Neem Oil promotes soil fertility, healthier leaves, and a fresh, vibrant appearance. Note: Warm the oil slightly if the texture thickens due to temperature changes.
MADE IN GERMANY: Crafted, tested, and packaged in Hamburg, Germany, our products are cruelty-free and made with premium-quality ingredients. We continuously refine our formulas to provide safe, effective, and natural solutions for your plant care needs.

BuxusPro BuxPrime Box Tree Caterpillar Treatment – Organic Boxwood Leaf Spray – Fast-Acting, Pet & Bee Safe – Controls Caterpillars & Moths – 100ml Treats 250m²

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Why We Love It

Enhances growth, protects plants.
Stimulates robust growth, improves resilience.
Treats large gardens economically.

Main Highlights

Powerful Protection Against Pests - Targeted formula to repel and prevent box tree caterpillars and moths before they cause damage.
Organic & Eco-Friendly Formula: Made with plant-based ingredients. Safe to use around pets, children, and pollinators like bees.
Supports Healthy Growth & Leaf Recovery: Helps boxwood plants recover from pest damage by encouraging fresh leaf growth and maintaining lush, green foliage.
Wide Coverage: A 100ml pack treats up to 250m², providing an economical and efficient solution for large gardens.
Trusted UK Brand: Developed by UK horticultural specialists. Designed specifically for box plants and British gardens.

8.7

Excellent

We scanned 1711 products

We reviewed these offers relevant to the Organic Insecticide For Plants within online retailers such as Amazon, eBay and other local retailers, ensuring we covered all major brands and models. The products we selected come from trusted brands like WeedKil, Generic, Ecoworm, DD teck, Natural Garden Solutions, Marble Hill, READY STEADY DEFEND, Stan Bourard, Garten Glück, BuxusPro, all of which have a reputation for consistently delivering high-quality products that users love and innovative approaches for function & design.

For the best Organic Insecticide For Plants in the market, we considered we took a deep dive into 8556 online reviews , focusing on elements like user satisfaction, performance in real-world conditions, and long-term reliability. Our ranking also evaluates each review’s relevancy, authenticity, up-to-dateness and depth so that the comparison is more sound.

We concluded that:

The clear winner of our analysis is Weedkil Bug & Mildew Plant Control 1L - Bug & Fungus Spray For Plants, Flowers, Fruits & Veg - Child & Pet Friendly | Organic, Natural Ingredients - Ready To Use. We love many things about this product by WeedKil. What sets it apart from the competition is Safe for children, pets, bees, Effective on various pests, Nourishes plants, promotes growth.
The best value product for most shoppers and where user satisfaction is continuously the highest is SB Plant Invigorator Pesticide & Natural Pest Control | Non-Toxic, Bee Friendly Garden Treatment | Safe for Vegetables & Ornamentals (500ml Makes 50L) by Generic based on online reviews by bloggers, experts and online shoppers.
The biggest bargain at the moment for Organic Insecticide For Plants and the best cost-to-value ratio is Natural Garden Solutions Organic Plant Bug Spray Fruit Vegetables Flowers Bee Friendly Pest Control Greenfly Blackfly Aphids Whitefly Spider Mites Mealybugs Scale Mildew Indoors Outdoors 500MLat Natural Garden Solutions with a 35% discount.
Our list of the best Organic Insecticide For Plants is updated regularly to reflect new releases and changes in product availability, so be sure to check back often for the latest rankings and discounts.

10 Best Organic Insecticide For Plants in The UK

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We scanned 1711 products

We concluded that: