Updated:31 October 2026
Rank 1-15 of the best Tomato Fertilisers
Our recommendation Price Customer rating
1. Comparison winner
Maxicrop Organic Tomato Feed 1 L
Maxicrop Organic Tomato Feed 1 L
Available immediately
free shipping
  • high potassium content for healthier tomatoes
  • nutrient-rich formula supporting plant growth
  • organic and eco-friendly, made with sustainable materials
Our rating
9,8
very good
2. Best value
Envii Maximato Liquid Tomato Feed, 1L
Envii Maximato Liquid Tomato Feed, 1L
Available immediately
free shipping
  • contains high potassium content to support healthy tomato growth and prevent diseases
  • nutrient-rich formula includes seaweed, magnesium, and calcium for high-quality tomatoes
  • certified organic and eco-friendly with natural ingredients boosting plant health
Our rating
9,6
very good
Garden Genie Tomato Fertiliser, 1L
Garden Genie Tomato Fertiliser, 1L
Available immediately
free shipping
  • high potassium content for supporting growth
  • provides a nutrient-rich formula promoting healthy vegetable development
  • organic and eco-friendly with environmentally conscious ingredients
Our rating
9,6
very good
PowerGrow G60083 Tomato Plant Fertiliser
PowerGrow G60083 Tomato Plant Fertiliser
Available immediately
free shipping
  • Rich in potassium for optimal plant growth
  • Formulated with essential nutrients for healthy development
  • Covers a wide range of plants beyond just tomatoes
Our rating
9,6
very good
5. Bestseller
Levington Tomorite Plant Food 2.5L
Levington Tomorite Plant Food 2.5L
Available immediately
free shipping
  • contains high potassium for plant growth and health
  • enriched with nutrients including seaweed extract for better yields
  • organic and eco-friendly, supporting sustainable gardening
Our rating
9,6
very good
Vitax Organic Tomato Food 1L
Vitax Organic Tomato Food 1L
Available immediately
free shipping
  • high potassium content for optimal plant growth
  • nutrient-rich formula supports bigger crops
  • organic and eco-friendly blend for sustainable gardening
Our rating
9,6
very good
Bronte Heritage Tomato Plant Food - 1L Concentrated Fertiliser
Bronte Heritage Tomato Plant Food - 1L Concentrated Fertiliser
Available immediately
free shipping
  • high potassium content supports plant growth
  • nutrient-rich formula promotes healthy plants
  • made from organic and eco-friendly ingredients
Our rating
9,5
very good
Phostrogen Organic Tomato Food 1L
Phostrogen Organic Tomato Food 1L
Available immediately
free shipping
  • high potassium content for strong, balanced growth in plants
  • nutrient-rich formula enriched with seaweed to improve flavour and yield
  • certified organic and eco-friendly, suitable for organic gardening
Our rating
9,5
very good
Doff Tomato Pour and Feed, 3L
Doff Tomato Pour and Feed, 3L
Available immediately
free shipping
  • high potassium content to promote robust plant growth
  • nutrient-rich formula for healthy foliage and fruit production
  • organic and eco-friendly to support sustainable gardening
Our rating
9,4
good
Empathy After Plant Tomato Feed 1L
Empathy After Plant Tomato Feed 1L
Available immediately
free shipping
  • high potassium content for optimal plant growth and development
  • rich in nutrients to support healthy plant growth
  • organic and eco-friendly for sustainable gardening
Our rating
9,4
good
Powergrow Liquid Tomato Plant Food 1L, G60081
Powergrow Liquid Tomato Plant Food 1L, G60081
Available immediately
free shipping
  • high potassium content promotes healthy plant growth
  • nutrient-rich formula supports top quality tomatoes
  • organic and eco-friendly for sustainable gardening
Our rating
9,3
good
Levington Tomorite Liquid Tomato Food 1L
Levington Tomorite Liquid Tomato Food 1L
Available immediately
free shipping
  • high potassium content with 4-3-8 NPK ratio
  • nutrient-rich formula enriched with seaweed extract
  • organic and eco-friendly ingredients
Our rating
9,3
good
Elixir Gardens Bumper Crop Tomato Food, 1 kg, NPK 9-15-38 + TE
Elixir Gardens Bumper Crop Tomato Food, 1 kg, NPK 9-15-38 + TE
Available immediately
free shipping
  • high potassium content promotes greater plant size, taste and weight
  • nutrient-rich formula helps boost plant yield
  • suitable for sunflowers, dahlias, cosmos, tomatoes, sweet peppers, aubergines, chillies, cucumbers and more
Our rating
9,3
good
Doff Tomato Feed 1L
Doff Tomato Feed 1L
Available immediately
free shipping
  • high potassium content promotes strong and healthy growth in a variety of plants
  • nutrient-rich formula encourages vigorous growth and supports healthy plant development
  • organic and eco-friendly ingredients reduce environmental impact
Our rating
9,1
good
Vitax 1L Tomato Feed
Vitax 1L Tomato Feed
Available immediately
free shipping
  • high potassium content aids tomato growth
  • nutrient-rich formula supports overall plant health
  • organic and eco-friendly product is safe for the environment
Our rating
8,9
good

Similar Tomato Fertiliser comparisons

Tomato Fertilisers buying guide: How to choose the right product from the above Tomato Fertilisers test or comparison

Introduction to Tomato Fertiliser: Why It Matters for Your Plants

The Role of Fertiliser in Tomato Growth

When we cultivate tomatoes, the right fertiliser plays a crucial role in achieving vibrant growth and a bountiful harvest. Tomatoes, like all plants, require specific nutrients to thrive. Fertilisers provide these essential nutrients, including nitrogen for leaf growth, phosphorus for root and flower development, and potassium for overall plant strength. Without proper nourishment, we can expect stunted growth, poor fruit quality, and lower yields. The key here is not just to use any fertiliser, but to choose one tailored for tomatoes to ensure they receive the right balance of nutrients.

Types of Tomato Fertilisers: Finding the Right Formula for Your Needs

Organic vs. Synthetic Fertilisers

Choosing between organic and synthetic fertilisers can be a pivotal decision. Organic fertilisers, derived from natural sources like compost or animal manure, are often slower-acting. They improve the soil structure and promote healthy microbial activity. This can lead to more sustainable growth in the long run. Synthetic fertilisers, on the other hand, provide immediate nutrient availability and can be easier to apply accurately and efficiently. Depending on your gardening style and goals, either option can be effective; we simply need to assess our own preferences.

Granular vs. Liquid Fertilisers

Granular fertilisers are applied directly to the soil and can provide nutrients steadily over time as they break down. They are well-suited for initial soil preparation or long-term feeding. Liquid fertilisers offer the advantage of quick absorption and are great for targeted feeding, especially during the growing season. For instance, if your plants are showing signs of nutrient deficiency, a liquid fertiliser can help them bounce back quickly.

How to Apply Tomato Fertiliser: Best Practices for Maximum Yield

Timing Your Application

Applying fertiliser at the right time can significantly enhance your tomato yield. We recommend starting with a soil test to ascertain existing nutrient levels, allowing us to tailor our fertilisation strategy accordingly. For most gardeners, a good rule of thumb is to begin fertilising at the time of planting and continue every four to six weeks during the growing season. This consistent feeding can help ensure that our tomato plants receive a steady supply of nutrients.

Application Techniques

How we apply the fertiliser is just as important as when we apply it. For granular options, we should spread the fertiliser evenly around the base of the plant and incorporate it into the top few inches of soil to prevent nutrient runoff during watering. Liquid fertilisers can be mixed with water and applied as a foliar feed or directly to the soil, ensuring each plant receives an adequate amount. Keeping an eye on the weather is essential; fertilising just before a rain shower can significantly enhance nutrient absorption.

Understanding Nutrient Ratios: What Your Tomato Plants Really Need

Decoding the N-P-K Ratio

Understanding the N-P-K ratio on fertiliser packaging can be a game changer for our gardening efforts. The numbers indicate the percentage of nitrogen, phosphorus, and potassium, respectively. For tomatoes, we often look for fertilisers with higher phosphorus content to promote flowering and fruiting. A ratio like 5-10-10 is ideal during the fruiting phase as it provides ample phosphorus and potassium, enhancing our tomato crop’s overall quality and yield.

Adjusting Nutrient Levels

It’s also beneficial to periodically check our plants for indications of nutrient deficiencies. For example, yellowing leaves could signal a nitrogen deficiency, while dark green leaves but stunted growth might suggest a lack of potassium. By understanding these signs, we can adjust our fertilisation regimen accordingly, ensuring our tomatoes receive exactly what they need.

FAQs about Tomato Fertiliser: Common Questions Answered

How often should I fertilise my tomatoes?

We typically recommend fertilising tomatoes every four to six weeks during the growing season. However, this may vary based on the soil’s existing nutrient levels and the specific fertiliser type being used.

Can I over-fertilise my tomatoes?

Yes, over-fertilisation can lead to nutrient imbalances and potentially damage the plants. Signs of over-fertilisation include burnt leaf edges and reduced fruit quality. Following the recommended application rates can help avoid this issue.

Is it necessary to use fertiliser with organic gardening?

While organic gardening prioritises natural methods, using certain organic fertilisers can enhance soil fertility and nutrient availability. We always encourage a balanced approach to ensure robust plant growth.

Table of contents
  1. Introduction to Tomato Fertiliser: Why It Matters for Your Plants
  2. Types of Tomato Fertilisers: Finding the Right Formula for Your Needs
  3. How to Apply Tomato Fertiliser: Best Practices for Maximum Yield
  4. Understanding Nutrient Ratios: What Your Tomato Plants Really Need
  5. FAQs about Tomato Fertiliser: Common Questions Answered

Overview

1. Comparison winner
Maxicrop Organic Tomato Feed 1 L
Our rating
9,8
very good
Maxicrop Organic Tomato Feed 1 LAvailable immediately
2. Best value
Envii Maximato Liquid Tomato Feed, 1L
Our rating
9,6
very good
Envii Maximato Liquid Tomato Feed, 1LAvailable immediately
Garden Genie Tomato Fertiliser, 1L
Our rating
9,6
very good
Garden Genie Tomato Fertiliser, 1LAvailable immediately
PowerGrow G60083 Tomato Plant Fertiliser
Our rating
9,6
very good
PowerGrow G60083 Tomato Plant FertiliserAvailable immediately
5. Bestseller
Levington Tomorite Plant Food 2.5L
Our rating
9,6
very good
Levington Tomorite Plant Food 2.5LAvailable immediately
Vitax Organic Tomato Food 1L
Our rating
9,6
very good
Vitax Organic Tomato Food 1LAvailable immediately
Bronte Heritage Tomato Plant Food - 1L Concentrated Fertiliser
Our rating
9,5
very good
Bronte Heritage Tomato Plant Food - 1L Concentrated FertiliserAvailable immediately
Phostrogen Organic Tomato Food 1L
Our rating
9,5
very good
Phostrogen Organic Tomato Food 1LAvailable immediately
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