Crop Rotation – How to Rotate Your Vegetables Without Losing Track
Tomatoes in the same bed for the third year running – sound familiar? It's one of the most common mistakes in the vegetable garden, leading to depleted soil, build-up of pathogens and progressively weaker harvests. Crop rotation solves it – if you know how to plan it.
Why does crop rotation matter?
Each plant family extracts slightly different nutrients from the soil and leaves behind different root exudates, residues and pathogens. Growing the same group in the same spot year after year:
- Depletes specific nutrients – brassicas, for instance, are heavy users of boron and sulphur; repeated cropping leaves the soil short of both
- Accumulates pathogens – blight, clubroot, fusarium wilt – each disease has its host, and the pathogen builds up in the soil when the same crop returns every year
- Invites the same pests – carrot fly, cabbage root fly, nematodes – pest populations grow when their host plant is always available
Rotation breaks these cycles. When a different plant family occupies the bed, the pathogens and pests specific to the previous group find no host and their numbers decline.
Four main rotation groups
The simplest rotation system divides vegetables into four groups:
Group 1: Solanums & cucurbits
Tomato, pepper, potato, aubergine, cucumber, courgette, squash, melon. Hungry crops – they need rich, fertile soil. Follow them with legumes.
Group 2: Root vegetables & alliums
Carrot, parsley, celeriac, parsnip, beetroot, onion, garlic, leek. Soil should be well broken up without fresh manure (which causes forked roots).
Group 3: Brassicas
Cabbage, broccoli, cauliflower, Brussels sprouts, radish, kale, rocket. Need soil pH above 6.5 – acidity promotes clubroot. Respond well to liming.
Group 4: Legumes & leaf crops
Beans, peas, broad beans, lettuce, spinach, sweetcorn. Legumes fix atmospheric nitrogen – they leave the soil richer for the next group. Ideal before solanums.
A 4-year rotation example
With four beds (A, B, C, D) the rotation looks like this:
| Bed | Year 1 | Year 2 | Year 3 | Year 4 |
|---|---|---|---|---|
| A | Solanums | Legumes | Roots | Brassicas |
| B | Legumes | Roots | Brassicas | Solanums |
| C | Roots | Brassicas | Solanums | Legumes |
| D | Brassicas | Solanums | Legumes | Roots |
The practical problem: how to track it over the years?
The theory is simple; the practice less so. After three seasons without notes, it's hard to remember what grew where. Scraps of paper disappear, phone photos lose their context.
Gardener Planner solves this automatically: each season is saved and linked to specific beds on your layout. When you plan a new year, you can see what grew in each spot in previous seasons and immediately check whether your rotation is on track – no hunting for old notes.
Exception: perennial vegetables
Asparagus, rhubarb and perennial herbs (thyme, tarragon, mint) need a permanent home – they build their root systems over many years and can't be rotated. Give them their own bed outside the rotation system.
Plan your rotation in the app
Gardener Planner saves your planting history automatically. Plan crop rotation without paper and without stress.
Open Planner →