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Fertiliser for apple trees in UK gardens

Updated: October 2026

An established Bramley in grass and a compact dessert apple in a mulched bed should not receive the same automatic handful. Choosing fertiliser for apple trees starts with whether the variety is culinary or dessert, whether grass competes around it and whether growth or cropping shows a genuine need. Potash is also a separate decision rather than proof that a general feed has failed. Our [fruit tree fertiliser comparison](/hub/fertiliser-soil-and-bark-mulch/fruit-tree-fertiliser) covers products for several kinds of top fruit; this guide keeps the advice specifically on garden apples in open ground.

An established Bramley in grass and a compact dessert apple in a mulched bed should not receive the same automatic handful.

Our top picks

UK GROW UK GROW fruiting plants 1 L

Best overall

UK GROW UK GROW fruiting plants 1 L
9.6/10about £10.99
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Miracle-Gro Miracle-Gro Performance Organics fruit & veg 1 kg

Preis-Tipp

Miracle-Gro Miracle-Gro Performance Organics fruit & veg 1 kg
9.2/10about £7.99
View offer
Topline Topline Grownmore 8 kg

Alternative

Topline Topline Grownmore 8 kg
9.0/10about £23.99
View offer
On this page
  1. 1.Dessert apple or culinary apple?
  2. 2.Calculate the late-winter dressing
  3. 3.Potash is a separate apple-tree job
  4. 4.Which products here fit an apple tree?

Dessert apple or culinary apple?

Culinary apples generally need more nitrogen than dessert varieties. RHS guidance reflects that difference by recommending 50 per cent more of its Growmore-type rate for cookers. A Bramley grown for large cooking fruit therefore follows a different calculation from a Cox or Discovery grown for eating. Do not identify the rate from tree size alone. More nitrogen is not always beneficial. A garden tree producing long soft shoots but little balanced cropping does not need an extra dose simply because spring has arrived. A regularly mulched dessert apple in healthy soil may need no additional fertiliser. If you are still choosing the product format, use the fruit tree fertiliser buying guide.

Calculate the late-winter dressing

For its Growmore method, RHS guidance gives dessert apples 100 g per square metre in bare soil and 140 g per square metre where grass surrounds the tree. Culinary apples receive 50 per cent more: 150 g per square metre in bare soil and 210 g per square metre in grass. These are RHS method rates for a suitable Growmore-type feed, not universal doses for every granular product. If your bag states another apple rate, follow that label. A circle 1 metre across has a radius of 0.5 metre and covers about 0.79 square metres. At the RHS dessert-apple grass rate, that area would take about 111 g, not 140 g; the rate is per square metre rather than per tree. Scatter granules on moist soil in late winter or early spring, over the rooting area and beyond the drip line, with a gap beside the trunk. The full placement sequence is in how to feed fruit trees.
UK GROW UK GROW fruiting plants 1 L

Testsieger

UK GROW UK GROW fruiting plants 1 L
9.6/10about £10.99
View offer

Potash is a separate apple-tree job

RHS guidance gives dessert apples sulphate of potash at 25 g per square metre every three years. This is distinct from the balanced Growmore-type dressing and should not be silently added to the dose of an all-purpose product. Sulphate of potash is a concentrated potassium fertiliser, so accurate measurement matters. No sulphate-of-potash bag is included among the five products in this comparison. Yellow tissue between greener veins may indicate magnesium deficiency, which the RHS treats with Epsom salts rather than additional nitrogen.

Which products here fit an apple tree?

Topline Grownmore 8 kg names fruit trees and is the bulk granular match. It costs £23.99 and shows 4.5 from 136 reviews, but the listing does not display a statutory NPK. A 20:20:20 field in the product data does not prove standard 7-7-7 Growmore. In the Amazon reviews, several UK buyers report split tubs. Miracle-Gro Performance Organics fruit and veg 1 kg costs £7.99 and is the more proportionate pack for one or two trees. It has 4.6 from 1,284 ratings, and in the Amazon reviews one UK buyer mentions fruit trees. The listing omits both NPK and the application rate, so the packet must establish the dose. UK GROW fruiting plants 1 litre names apples and costs £10.99. Its liquid form suits a container routine more than an orchard tree. The 4.8 average rests on only 11 ratings, and the listing gives neither NPK nor a cap dose. Farmer's Secret names fruit trees and gives a weekly teaspoon-per-US-gallon routine, but the Amazon reviews are from the United States. Vitax bone meal is a planting product, not a cooker's annual top-dressing. If you already own a balanced feed, Growmore or fruit tree fertiliser helps decide whether another bottle adds anything. Do not apply the open-ground grams-per-square-metre calculation to a pot.

Common questions

Do dessert and cooking apples need the same feed?
No. Under the RHS Growmore method, culinary apples receive 50 per cent more than dessert apples. First identify the variety, then calculate the treated area and use the rate for that setting. Do not increase a different proprietary product unless its label permits it.
How much Growmore should an apple in grass receive?
RHS guidance gives dessert apples 140 g per square metre and culinary apples 210 g per square metre in grass. These are area rates, not amounts per tree. Calculate the grass-free feeding area, then follow your actual product label if its formulation or instructions differ.
Must I feed a mulched dessert apple every March?
No. A regularly mulched dessert apple growing and cropping normally may need no extra fertiliser. Feed when poor harvests, grass competition, thin soil or a diagnosed deficiency justify it. An annual date in the calendar does not establish a nutrient need.
When should I add sulphate of potash?
RHS guidance gives dessert apples 25 g per square metre every three years. Treat that as a separate measured application, not an automatic addition to every balanced feed. The sulphate-of-potash product is not part of this five-listing comparison.
Which product here actually names apples?
UK GROW's listing explicitly names apples, but it is a liquid with only 11 ratings and no cap dose on the listing. Topline names fruit trees, and Miracle-Gro has a UK review on Amazon mentioning them. Crop wording is one criterion; format, analysis, instructions and sample size still matter.
Can I use the same rate for a potted apple?
No. The open-ground rate is measured per square metre of rooting area and does not transfer to restricted compost. Use a product with explicit container directions, often a suitably diluted liquid during active growth, and account for the pot's watering regime.

Related pages

Best fruit tree fertiliser

Fruit tree fertiliser

Fruit tree fertiliser buying guide: form and label

How to feed fruit trees in the UK: rate and the ring

Growmore or fruit tree fertiliser for trees in soil

Sources

Public UK sources from the research digest, used for this page in October 2026. Prices, stars and review counts are from the five amazon.co.uk listings in this comparison. There is no laboratory test. Topline is not confirmed as statutory 7-7-7. Farmer's Secret review texts in the file are from the United States. No listing here is claimed to double a crop.

  1. RHS, Fruit trees: feeding and mulching (retrieved 23 October 2026)
  2. RHS, How to grow apples (retrieved 23 October 2026)
  3. RHS, How to grow pears (retrieved 23 October 2026)
  4. RHS, Fertilisers: types and uses (retrieved 23 October 2026)
  5. GOV.UK, Manufacturing and marketing fertilisers (retrieved 23 October 2026)
  6. Fertilisers Regulations 1991, Schedule 2, paragraph 6 (retrieved 23 October 2026)
  7. GOV.UK, Nitrogen fertilisers in nitrate vulnerable zones (retrieved 23 October 2026)
  8. Gardeners' World, Essential apple care (retrieved 23 October 2026)