Tomato Feed — High-Potash Liquid Concentrate for Bigger, Sweeter Crops
Fortified organic NPK 4-3-8 tomato fertiliser with chelated calcium & magnesium and natural seaweed extracts. 1L makes up to 250L of diluted feed — incredible value, professional-grade results.
Free next-day delivery on all UK orders · Ships same day if ordered before 3pm Mon–Fri · 30-day returns
What Is Tomato Feed?
Tomato feed is a high-potassium liquid plant food formulated specifically for fruiting plants. Where general-purpose fertilisers focus on nitrogen for leaf growth, tomato feed delivers a higher ratio of potassium (potash) — the nutrient that drives flower set, fruit development, fruit size, ripening, and natural sugar content.
Tom-Sol Tomato Feed has an NPK ratio of 4-3-8, meaning every dose delivers balanced nitrogen and phosphorus alongside double-strength potassium — exactly what tomato, pepper, chilli, and aubergine plants need from flowering through to harvest.
Why Choose Tom-Sol Tomato Feed
Tom-Sol is formulated to outperform standard tomato feeds on the metrics that matter for a successful harvest — fruit size, flavour, disease resistance, and value per bottle.
The 4-3-8 NPK ratio delivers double-strength potassium — driving flower set, fruit swell, even ripening, and natural sugar development for noticeably better flavour.
Chelated calcium and magnesium remain fully soluble and available at the roots — preventing the classic calcium-lockout failures that cause blossom end rot in container-grown tomatoes.
Natural seaweed extracts stimulate beneficial soil microbes and build plant resilience against pests, heat stress, and short dry spells — giving plants the energy reserve to keep fruiting through tougher conditions.
Mix 15ml into 4.5L of water. A single 1-litre bottle produces up to 250 litres of ready-to-use feed — and a 5-litre bottle makes up to 1,250 litres. Exceptional value per dose.
100% biodegradable, vegan-friendly, and safe for bees, earthworms, pets, and children once diluted and applied as directed. Manufactured to UK environmental standards.
Works equally well on peppers, chillies, aubergines (same nightshade family), plus high-potash-loving flowering plants including roses and hydrangeas. One bottle, many uses.
Technical Specifications
Verified technical specifications for Tom-Sol Tomato Feed. UK-manufactured liquid concentrate, batch-tested, supplied in food-grade HDPE bottles.
| Attribute | Specification |
|---|---|
| Product Type | Fortified organic liquid concentrate fertiliser |
| NPK Ratio | 4-3-8 (Nitrogen 4 · Phosphorus 3 · Potassium 8) |
| Available Sizes | 1 Litre · 5 Litre |
| Coverage | 1L makes up to 250L of diluted feed · 5L makes up to 1,250L |
| Dilution Rate | 15ml per 4.5 litres of water (approximately 1 capful per gallon) |
| Key Trace Elements | Chelated Calcium (Ca) · Chelated Magnesium (Mg) · Iron (Fe) · Zinc (Zn) |
| Natural Additives | Seaweed extracts for plant resilience and microbial stimulation |
| Suitable For | Tomatoes · Peppers · Chillies · Aubergines · Roses · Hydrangeas · Other fruiting and flowering plants |
| Growing Methods | Soil beds · Grow bags · Pots & containers · Raised beds · Greenhouse · Allotment · Drip irrigation |
| pH (concentrate) | 5.5 – 6.5 (slightly acidic — matches tomato preference) |
| Shelf Life | 2 years sealed · 12 months once opened |
| Eco Credentials | Biodegradable · Vegan · Bee, pet & child safe at applied dilution |
| Manufactured At | East Kilbride, Glasgow G74 5PA · UK Manufactured Since 2017 |
How to Use — Dosage & Timing
Tom-Sol is a concentrate — always dilute before use. Shake the bottle well, then mix at the recommended rate and water plants at the base around the root zone, avoiding wetting the foliage where possible.
For roses, hydrangeas and other flowering plants, apply at the same 15ml per 4.5L dilution every 2 weeks during the May–September flowering season. See the "Which plants can you feed with tomato feed?" guide for plant-by-plant guidance.
What Else Can I Use Tomato Feed On?
Despite the name, "tomato feed" is really shorthand for high-potash plant food — and any plant that flowers and fruits benefits from extra potassium. Tom-Sol works equally well on the plants below.
Peppers
Same nightshade family as tomatoes — identical feeding needs. Boosts fruit set, ripening, and capsaicin development.
Read the guide →Chillies
High-potash feed intensifies heat and ripening colour. Apply weekly from second truss set through harvest.
Read the guide →Aubergines
Nightshade-family fruiting plant. Identical dilution and frequency to tomatoes — supports the heavy fruit set aubergines produce.
Read the guide →Roses
Potassium drives flowering and disease resistance. Apply fortnightly from May–September for stronger, longer-lasting blooms.
Read the guide →Hydrangeas
Hydrangeas reward high potash with bigger flower heads. Particularly helpful for repeat-flowering varieties.
Read the guide →Other Fruiting Plants
Cucumbers, courgettes, melons, and squashes all benefit from the high-potash boost once they begin flowering.
Read the guide →Where Tom-Sol is not the right choice: avoid using it on leafy crops like lettuce, spinach, and herbs where nitrogen-led growth is preferred over fruit and flower production. For those, choose a balanced general feed instead.
How Tom-Sol Compares to Standard Tomato Feeds
Most supermarket tomato feeds deliver a basic NPK ratio and little else. Tom-Sol is engineered with the secondary nutrients that determine whether a tomato season ends well or in disappointment.
| Feature | Tom-Sol | Standard Tomato Feed | Ready-to-Use Bottled Feed |
|---|---|---|---|
| NPK Ratio | 4-3-8 (high-potash) | 4-5-8 or similar | Varies, often diluted |
| Chelated Ca & Mg | ✓ Yes — micronutrient shield | Rare | Rare |
| Natural seaweed extracts | ✓ Yes — resilience boost | No | No |
| Concentration | 1L makes 250L | 1L makes ~100–200L | Pre-diluted (low value) |
| Value per litre applied | ~5p per 4.5L feed | 10–20p per 4.5L | £1–£3 per 4.5L equivalent |
| Suitable for roses & hydrangeas | ✓ Yes | Sometimes | Sometimes |
| UK manufactured | ✓ East Kilbride, Glasgow | Varies | Varies |
| Pet, bee & child safe | ✓ At applied dilution | Varies | Varies |
Comparison shown at category level. Specific commercial brands vary in formulation — always check the label of any feed for actual NPK and trace-element content.
What Gardeners Say
Real customer feedback from gardeners using Tom-Sol on tomatoes, peppers, chillies and aubergines in greenhouses, grow bags, and allotments across the UK. We publish only verified reviews — no fabricated or paid testimonials.
Best tomato crop in years
"Switched from Tomorite to Tom-Sol this season after reading the NPK breakdown. The fruit set is noticeably heavier on my Sungold and Gardener's Delight — and I haven't seen a single case of blossom end rot. The 1L bottle lasted me the whole greenhouse season."
Works on peppers too
"Bought it for the tomatoes, ended up using it on my chillies and peppers as well. Capsaicin levels in the Carolina Reapers were the best they've ever been. The concentrate makes incredible value — 5 litres has lasted me two full seasons on the allotment."
Roses bloomed all summer
"Tried it on my David Austin roses on the advice of the article on the website. Fortnightly feeding from May through September gave me the strongest, longest-lasting bloom display I've ever had. Will be ordering the 5L for next year."
Tomato Feed FAQs
Direct answers to the most common questions about Tom-Sol and tomato feed in general. For deeper guidance, see the Useful Info guides.
Ready for Bigger, Sweeter Crops?
UK manufactured · Batch tested · Next-day delivery from Glasgow · 30-day returns
Choose Your Size & Add to Basket →Free next-day delivery on all UK orders · Order before 3pm Mon–Fri for same-day dispatch · Read our delivery policy
Looking for something else from the Mifica garden range? Alga-Sol Seaweed Feed · Pro-Hold Gravel Glue · All Garden Products
Tomato Feed Guides & Advice
In-depth guides on getting the best results from Tom-Sol Tomato Feed — what to feed, when to feed, how often, and how to fix the most common problems mid-season.
Plant-by-plant guide covering peppers, chillies, aubergines, roses, hydrangeas, strawberries, lawns, and more — with the potash logic explained.
Read the guide → Timing GuideFirst truss to last harvest — exactly when to start, how often to feed, and how the schedule changes between greenhouse and outdoor growing.
Read the guide → NPK ExplainerN, P, K explained in plain English — what each nutrient does, why potash drives fruiting, and how to read any fertiliser label.
Read the guide → ComparisonA fair comparison of comfrey, banana skins and nettle brews against a bottled concentrate — covering cost, consistency, and convenience.
Read the guide → TroubleshootingDiagnose mid-season problems — blossom end rot, leaf yellowing, leaf curl — and the feeding adjustments that fix each one.
Read the guide → All GuidesThe full library of Mifica product guides, troubleshooting articles, and application advice — organised by product range.
Browse all guides →