Successional Sowing Explained

Sow a whole packet of lettuce in one go and you get thirty heads in the same fortnight, then nothing. Successional sowing is the simple fix: sow a little, often, so the harvest arrives in a steady trickle rather than one overwhelming wave.

What it is and why it works

Successional sowing means making several small sowings of the same crop a few weeks apart, instead of one big sowing. Each batch matures a little after the last, so you pick a fresh handful every week across the season rather than facing a glut you can't possibly eat.

It matters most for fast crops that don't store well. A row of radishes goes from peppery and perfect to woody in a matter of days, and bagged salad wilts fast. Spreading the sowings out means you're always cutting young, tender leaves and pulling crisp roots — and you waste far less.

There's a bonus, too: small frequent sowings spread your risk. If a cold snap, slugs or a forgotten watering can wipe out one batch, you've still got others coming on behind.

The crops that suit it

Anything quick, leafy or pull-as-you-go is a good candidate. The slow, space-hungry crops — leeks, parsnips, winter squash — are not; you sow those once and wait.

• Salad and lettuce — the classic. Cut-and-come-again loose-leaf types and small gem lettuces are ideal sown little and often from March to September. A short row or a window box every two to three weeks keeps the salad bowl full.
• Radishes — the fastest of the lot, often ready in four to six weeks. Sow a pinch fortnightly from March onwards; they're brilliant for filling gaps between slower crops.
• Carrots — sow small batches from late March through to July for a long pulling season, taking the youngest, sweetest roots first.
• Beetroot — sow a short row every three or four weeks from April. You can pull baby beets young or leave some to size up.
• Peas — early, second-early and maincrop sowings from March to June stretch the picking season for weeks. They don't store fresh, so a steady supply is exactly what you want.

Spinach, chard, dwarf French beans, rocket, spring onions and pak choi all reward the same little-and-often treatment.

A simple schedule

The rule of thumb is to sow a new short batch every two to three weeks through the growing season. You don't need a complicated chart — keep it loose and let the plants guide you.

The most reliable trick: sow the next batch when the previous one has germinated and is showing its first proper leaves. That naturally adjusts your spacing to the weather. In a cold spring everything grows slowly, so the gaps stretch out; by warm June, crops race away and you can sow more often.

A rough season looks like this:

The planting calendar helps you pin down UK sowing windows for each crop. For the bigger picture of fitting these batches around everything else, see the grow-your-own year plan.

Two ways to do it

There are two routes to a continuous harvest, and the best gardeners use both.

1. Stagger the sowings. Take one variety and sow it repeatedly at intervals, as above. Simple, flexible, and perfect for salad, radish and beetroot. The only catch is remembering to keep going — pop a recurring note in your diary, or sow each batch the moment the last one comes up.

2. Sow early, maincrop and late varieties together. Many crops come in versions bred to mature at different speeds. Sow them on the same day and they ripen in sequence on their own. Peas are the textbook example: an early like 'Meteor', a maincrop like 'Hurst Green Shaft' and a late variety sown together hand you weeks of pods from a single sowing session. The same thinking works for early, second-early and maincrop potatoes, and for early versus maincrop carrots.

For most beginners, staggering one or two reliable salad crops is the easiest place to start. Once that habit sticks, layer in a few sequential varieties — and you'll find the easiest crops for beginners take to little-and-often sowing beautifully.

Keep your seed packets dry and labelled between sowings so they're ready to grab, and you'll soon be picking something fresh most weeks of the season.