Succession Planting: Getting a Continuous Harvest from a Few Pots
A container garden planted once in May gives you a burst of food in July and nothing thereafter. Succession planting — clearing and replanting each container as it finishes — is what turns the same six pots into a supply that runs from spring to autumn.
Three ways to succeed
- Same crop, repeated sowing. Sow a new pot of lettuce every three weeks. Simple, predictable, works for anything with a short cycle.
- Different crop in sequence. Peas in spring, then beans, then winter salads in the same container. Requires knowing roughly when each will finish.
- Catch cropping. Sowing a fast crop into gaps — radish between slow-maturing plants, or lettuce under a tomato that has not yet filled out.
Use all three and a modest balcony outperforms a much larger garden planted once.
A working rotation for one 20 L container
| Period | Crop | Why this order |
|---|---|---|
| March–June | Peas or dwarf broad beans | Early, cool-tolerant, and they fix nitrogen in the mix |
| June–August | Dwarf French bean | Warm-season legume, follows on the nitrogen left behind |
| August–October | Lettuce or rocket, then spinach | Fast and shade-tolerant as light declines |
| October–March | Chard, kale or winter salad, or rest | Hardy overwintering, or leave fallow and refresh the mix |
The legume-then-leaf pattern is the useful one: beans and peas leave nitrogen in the mix, which the hungry leafy crop that follows uses well. Avoid following a brassica with another brassica — that is how clubroot and nutrient depletion build up.
Family rotation in containers
Even with only a handful of pots, avoid planting the same family in the same mix twice in a row:
- Solanaceae: tomato, pepper, aubergine, potato
- Fabaceae: beans, peas
- Brassicaceae: cabbage, kale, rocket, radish, mustard
- Asteraceae: lettuce, chicory, endive
- Apiaceae: carrot, parsley, coriander, dill
- Cucurbitaceae: cucumber, courgette, squash
In practice, this is mostly about two rules: do not follow tomato with tomato, and replace the mix entirely after any heavy-feeding solanaceae crop.
Timing the handover
The awkward part of succession is the gap between one crop finishing and the next being ready. Three ways to compress it:
- Sow the next crop before the current one finishes. Start lettuce in small cells while the beans are still producing. When the beans are cleared, the lettuce goes in as a plug already three weeks old.
- Overlap in the same container. Sow quick radish between slow brassicas; they are gone before the brassicas need the space.
- Accept a short fallow. Two weeks with the container topped up with fresh compost and covered is not wasted time — it lets the mix recover and breaks pest cycles.
Every time you clear a container for a new crop, remove the top 5 cm of old mix and replace it with fresh compost, plus a handful of slow-release feed. Roots have stripped the top layer, and this single habit prevents most mid-season decline.
Planning the whole season in one table
A simple layout for six containers in a temperate climate:
| Pot | Spring | Summer | Autumn |
|---|---|---|---|
| 1 — 25 L | Tomato (planted May) | Tomato | Winter salads |
| 2 — 20 L | Peas | Dwarf beans | Spinach |
| 3 — 15 L | Pepper (planted May) | Pepper | Pepper indoors or cleared |
| 4 — 12 L | Chard | Chard | Chard (overwinters) |
| 5 — 6 L | Lettuce | Lettuce, resown ×4 | Winter lettuce |
| 6 — 5 L | Basil | Basil | Coriander or parsley |
Notice that pots 4 and 5 are doing the heavy lifting on continuity. A perennial-ish crop like chard in one container plus a fast-resown salad container is the simplest possible way to guarantee something to pick in every month of the season.
Common succession mistakes
- Sowing the next crop into exhausted mix without refreshing it.
- Leaving a finished crop in place for weeks "until it stops producing" — clear it as soon as yield drops, because the space is worth more than the last few beans.
- Replanting the same family repeatedly because it worked once.
- Sowing too much at each succession — small, frequent sowings beat large occasional ones.
Common questions
How many crops can one container produce in a year?
Three is realistic, sometimes four. A typical sequence is peas in spring, beans in summer, then salads or spinach in autumn, with the mix refreshed between each.
Do I need to replace the mix between crops?
Replace the top 5 cm and add a handful of slow-release feed after every crop. Do a full change after heavy feeders, and never follow a crop with another from the same plant family.
What is a catch crop?
A fast-growing crop sown into the gap left by a slower one — radish between brassicas, or lettuce under a young tomato. It is harvested before the main crop needs the space.
When should I give up on a crop and clear the container?
When harvest drops below a worthwhile amount. A bean plant giving five pods a week is occupying space worth more than the pods; clear it and sow the next crop immediately.