The Real Cost of Growing Your Own Vegetables (UK 2026 Breakdown)
Is growing your own actually cheaper than Tesco? We ran a full year of receipts on a real 10m² UK veg patch — here's exactly what it costs, what you save, and the crops that pay you back the fastest.
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Quick Summary
Is growing your own actually cheaper than Tesco? We ran a full year of receipts on a real 10m² UK veg patch — here's exactly what it costs, what you save, and the crops that pay you back the fastest. We tracked a full year of receipts on a real 10m² UK veg patch and compared every crop to Tesco prices — here is exactly what it costs to set up, what it costs to run, and the crops that pay for the whole plot in a single summer.
The Quick Answer
- ✓ Year 1 total setup cost (bed, compost, tools, seed): £185 for a 10m² plot
- ✓ Year 1 harvest at Tesco prices: £312 — a £127 net saving in year one
- ✓ Year 2+ ongoing cost: £45/year (compost, seed, feed)
- ✓ Year 2+ average annual saving: £267
- ✓ Fastest payback crops: salad leaves, courgettes, French beans, tomatoes, herbs
- ✓ Slowest payback: potatoes, onions, brassicas (cheap at supermarkets)
What You Actually Spend in Year 1
Raised bed or dug patch — £0 to £120
A no-dig patch costs nothing to make (see our no-dig guide). A 1.2m × 2.4m timber raised bed costs £70–£120. Free pallets or scaffold boards drop this to zero.
Compost or soil improver — £45
10cm of peat-free multipurpose to top the bed costs roughly £45 for a 10m² area. This is year one only — after that you top up with 2–3cm each spring.
Seed and small plants — £20
£15 of seed packets and £5 of plug plants sows the whole plot. Save your own seed from year two.
One quality trowel, hand fork, secateurs — £45
Buy once, use for a decade. Cheap tools break and cost you twice. See our best garden tools for beginners.
Watering can and small hose — £25
Total year 1: £185 with a bought raised bed, or £90 no-dig style.
The Best-Value Crops (Ranked)
1. Salad leaves — £42 saved per m²
Cut-and-come-again mixes crop for 12 weeks from an £2.50 seed packet. Bagged salad is £1.80 per 100g at Tesco.
2. Herbs — £38 saved per m²
Basil, coriander, parsley cost £0.85 a supermarket pot but grow for months from a £2 packet.
3. Courgettes — £34 per plant
Two plants crop 12kg over a summer at £3/kg supermarket.
4. Cherry tomatoes — £28 per plant
Sungold or Tumbling Tom crop 4kg at Tesco's £6.50/kg.
5. French beans — £22 per m²
Sow direct in June, crop until October. Beat frozen prices in weeks.
6. Chard & kale — £18 per m²
Winter crops when supermarket veg spikes in price.
Crops That Don't Pay You Back
- ✗ Maincrop potatoes — £8 space for £3 of supermarket spuds
- ✗ Onions & garlic — cheap year-round, take space for 9 months
- ✗ Full-size cabbages & cauliflower — huge space, low retail value
- ✗ Sweetcorn — needs a block of 12+ plants for pollination in short UK summers
- ✗ Anything you don't actually eat — biggest hidden cost of a veg patch
How to Halve Your Costs from Year 2
- ✓ Compost your own kitchen scraps — free soil improver forever (see our composting guide)
- ✓ Save seed from the best plants (tomatoes, beans, salad)
- ✓ Take cuttings of herbs — one rosemary becomes ten in a year
- ✓ Buy plug plants from local Facebook Marketplace in April
- ✓ Use rainwater from a butt — free, and better for plants
The Kit That Pays for Itself
After a decade of tracking receipts, these are the products that consistently earn their keep in a UK productive garden: a solid 1.2m × 2.4m raised bed kit (Forest Garden or VegTrug), Tomorite high-potash feed for fruiting crops, a decent Burgon & Ball hand fork and trowel, and a 100L water butt to cut mains water use to almost zero. Everything else is optional.
Shop Grow-Your-Own Essentials on AmazonRecommended Buying Guides
Looking for the right products? These guides have you covered:
- Best Raised Garden Beds for Vegetables
- Best Compost Bin UK (2026): Tumblers, Hot Bins & Budget Picks
- Best Small Greenhouses UK 2026: 7 Picks Under £500
"Growing your own only saves you money if you grow what's expensive at the shop — not what's cheap. Focus on herbs, salad, tomatoes and courgettes and you'll pay for the whole plot every summer. Fill it with potatoes and you're gardening for love, not for savings."
— Sarah Mitchell, Home Gardening Pedia
Frequently Asked Questions
Is it actually cheaper to grow your own vegetables in the UK?
Yes, once you're past year one. A 10m² UK veg patch typically saves around £267 per year in supermarket veg from year two onwards, based on 2026 Tesco prices for cherry tomatoes, courgettes, salad, herbs and beans.
How much does it cost to start a UK vegetable garden?
Around £185 for a 10m² plot in year one, dropping to about £45/year afterwards. A no-dig approach on existing ground can cut year-one costs to under £90.
Which vegetables give the best return in the UK?
Salad leaves, herbs, cherry tomatoes, courgettes, French beans, and cut-and-come-again chard — all save £20+ per square metre versus UK supermarket prices.
How long before a vegetable garden pays for itself?
The plot itself typically pays back within a single summer if you prioritise high-value crops (herbs, salad, tomatoes) over cheap staples (potatoes, onions).
Is growing your own vegetables worth it if you only have a small garden?
Absolutely — a 3m² patch of herbs and salad alone typically saves £120 per year. Smaller UK spaces actually see better ROI per square metre than large plots.
Do you need a greenhouse to save money growing vegetables?
No. An unheated greenhouse boosts yield by 30–40% but isn't necessary. Most of the £267 annual saving is achievable outdoors in a sunny UK garden.
Written by
Sarah Mitchell
Senior Gardening Editor
Sarah has been gardening for over 15 years and holds an RHS Level 3 qualification. She specialises in organic growing methods and small-space gardening.
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