What It Really Costs to Start Growing Your Own

The biggest myth about growing your own is that it costs a fortune to begin. Glossy gardening magazines push timber raised beds, fancy tools, hand thrown terracotta and walk in greenhouses that cost more than a fortnight's holiday.

You do not need any of it.

Here is what it actually costs to get started in 2026, broken down honestly.

The bare minimum

If you have a sunny windowsill, a back step or a balcony, you can grow your own food for under £20. A few plastic pots from a pound shop, a small bag of multipurpose compost from B&M or The Range for around £4, and a couple of seed packets at £2 each. That is it. You will be eating salad leaves, herbs and cherry tomatoes within weeks.

Total starter cost: around £15 to £20.

The small back garden setup

For anyone with a patch of grass or a patio, the spend goes up a little but stays sensible. Six to eight larger pots or a couple of grow bags. A 50 litre bag of decent compost. A small hand fork and trowel set, often around £5 from Wilko or B&M. A watering can. A wider range of seeds covering tomatoes, cucumbers, peppers, salad leaves, runner beans, courgettes and herbs.

Total starter cost: around £40 to £60.

Adding a mini greenhouse

This is where it gets interesting. The plastic four tier mini greenhouses you see on patios across the country can be picked up from £15 to £25 in 2026. VonHaus sells one at £24.99. Outsunny does a four tier model on Amazon for £18.99. Argos and The Range stock similar units in the same range. They take ten minutes to assemble, fold flat for winter storage, and turn a small back garden into a proper growing space. They protect early seedlings, extend the season at both ends, and let you start tomatoes, peppers and cucumbers in March instead of May.

A walk in plastic greenhouse, the bigger version you can stand inside, comes in at around £30 to £60 from B&M, Tesco or Amazon. Outsunny's walk in model with zipped roll up doors was £28.83 on Amazon at the last check.

Total starter cost with a mini greenhouse: around £55 to £80.
Total starter cost with a walk in greenhouse: around £80 to £120.

What about ongoing costs?

Once you are set up, the running costs drop sharply. Compost can be topped up with kitchen peelings and grass clippings if you start a small compost bin. Seeds, properly stored in the fridge, will last several seasons, so a single £2 packet covers years of growing. Most established growers spend £30 to £80 a year on consumables once their setup is in place.

The honest comparison

Set the numbers side by side. The average UK family spends £475 a year on fresh fruit and vegetables. Getting started in growing your own, even with a mini greenhouse included, costs less than two months of that supermarket bill.

You will recoup the entire startup cost in your first growing season. Everything after that is profit, on your plate.

The next obvious question is the one most people are too cautious to ask out loud. Just how much money could you actually save?



*Sources: Current UK retail prices from VonHaus, Outsunny, Argos, B&M, The Range and Amazon UK, April 2026.*