Concentrated Liquid Fertilisers 500ml-10L

£5.83 £18.13Price range: £6.99£5.83 through £21.75£18.13 incl. VATex. VAT

Product Details
  • Proven performance – concentrated liquid fertilisers are trusted by both commercial growers and hobbyists for consistent, visible results.
  • Highly concentrated formula – only 1-2.5ml per 1L of water means each bottle goes a very long way, reducing cost per use.
  • Flexible packaging sizes – available from 500ml to 10L, catering to both home gardeners and large-scale growers.
  • Faster plant uptake – liquid form ensures quicker absorption compared to granular fertilisers.
  • Recommended application rate: 1-2.5ml per litre of water per square metre.
  • NOTE: The appearance of these fertilisers can change between batches due to the raw ingredients used in production. Additionally supplied packaging may differ from that displayed.

We offer FREE Standard Delivery (3-5 day) to UK mainland on every order.

We also provide an Express Delivery service from just £3.99. Express orders must be placed before 10am (Monday-Friday) to be be delivered the next working day. Orders placed after this time will be delivered in a 48 hour timeframe. 

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Product Description
Our range of liquid fertilisers are perfect for topping up plants over the growing season. We stock a wide range of speciality feeds perfectly tailored to almost any plant type:
  • Liquid Tomato Food (9-15-38) is a concentrated fertiliser designed for strong growth and heavy yields. High phosphorus promotes healthy roots and flowers, while extra potassium boosts fruit size, flavour, and colour. With balanced nitrogen for steady growth, this fast-absorbing liquid ensures rich, great-tasting tomatoes every time.
  • Early Season Feed (12-10-10) is a concentrated liquid fertiliser formulated to give young plants the best start. With higher nitrogen for strong leafy growth, balanced phosphorus for healthy roots, and potassium for resilience, it provides everything seedlings and early crops need to establish quickly and thrive.
  • Growmore Balanced Feed (18-18-18) is a versatile liquid fertiliser providing equal levels of nitrogen, phosphorus, and potassium for all-round plant health. Perfect for use throughout the growing season, it supports strong growth, healthy roots, and vibrant flowers or fruit, making it ideal for a wide range of crops and ornamentals.
  • High Phosphate Feed (12-36-12) is a concentrated liquid fertiliser designed to boost root development and flowering. With elevated phosphorus for strong establishment, nitrogen for steady growth, and potassium for resilience, it’s ideal for transplanting, early growth stages, and encouraging abundant blooms and fruit set.
  • High Potassium Feed (15-5-30) is a concentrated liquid fertiliser formulated to enhance flowering and fruiting. With elevated potassium for improved fruit size, flavour, and colour, balanced nitrogen for steady growth, and phosphorus for root health, it’s the perfect choice for heavy-yielding crops and vibrant ornamentals.
  • High Nitrogen Feed (23-5-11) A powerful growth booster with elevated nitrogen to drive rapid leaf and stem development. Balanced with phosphorus for roots and potassium for plant health, it’s ideal for leafy greens, lawns, and crops needing a strong vegetative push.

Application Rates

Use at a rate of 1-2.5ml per litre of water per sqm. for new plants it is recommended to use around 1ml per litre whilst they have established. On well established plants the application rate can be increased. Recommended feed twice per week, more frequent feeding is possible but care must be taken not to overfeed as individual plant requirements vary greatly.Note: Main bottle images are that of the 5L container for illustration purposes, please make sure you choose the right size container for your needs from 500ml – 10L using the drop down menu above. Appearance (colour) of the liquids may change from batch to batch depending on the raw ingredients used during production. NPK and other mineral levels will always be as advertised.In order to comply with UK Law we are obligated to report any suspicious transactions relating to this product.
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About Elixir Garden Supplies

For over 35 years Elixir Garden Supplies have been providing gardeners with all the essentials they need to achieve growing.

Our online store makes sure that all our customers have access to the information they need to make the right decisions when choosing the products they need for their gardens. We know from experience that gardening means many different things to our customers. Whether you have a balcony, patio, lawn or allotment, Elixir Gardens are proud to supply both amateur and professional gardeners alike.

We regularly use our many years of experience to developed our exclusive formulations in specialist fertilisers. Many of these have stood the test of time and have become firm favourites with amateurs and professionals alike.  In fact our knowledge of fertilisers, feeds and garden care is well known within gardening circles. But don’t just take our word for it, why not check out the thousands of fantastic reviews on Trust Pilot.

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About Elixir Gardens

With over 35 years’ experience in Gardening and Horticulture here at Elixir Garden Supplies we pride ourselves on offering quality gardening essentials with the knowledge of how to use them and sold at the best possible prices.