Planting & Harvest Dates

Succession Planting Calculator

Pick a crop, your first and last planting dates, and an interval to generate a staggered sowing schedule for a continuous harvest all season long.

How to use the succession planting calculator

Choose your crop, set the date of your first planting, and tell the tool when your growing season ends. Pick how often you want to sow a new batch, then press Generate Planting Schedule. You will get a dated table of every planting and its expected harvest, plus a summary of how many weeks of continuous harvest to expect. It turns the idea of “plant a little, often” into a concrete calendar.

Why succession planting works

Most quick crops mature all at once and then decline fast. Sow a whole packet of lettuce on the same day and you will face a wall of heads that bolt before you can eat them. Succession planting solves this by breaking that single sowing into several smaller ones spaced a couple of weeks apart. The result is a steady trickle of fresh produce over many weeks instead of a brief glut followed by an empty bed. It also spreads your risk, so a single bad germination or pest attack does not wipe out your entire crop.

Choosing your interval and crops

The ideal interval depends on how fast the crop grows and how long you can keep eating it. A two-week gap suits speedy, quick-to-bolt crops like radishes, arugula, and loose-leaf lettuce, while three to four weeks works for beans, beets, and carrots. Pick crops that mature quickly and that you eat often, so the continuous supply actually gets used. Herbs like cilantro and dill, which bolt rapidly in heat, are classic succession crops that reward frequent small sowings.

Timing the start and end of the season

Begin as soon as your soil is workable in spring for cool-season crops, and keep sowing until a new planting would run out of season. For fall harvests, count the days to maturity back from your first frost, then add a little buffer because cool autumn weather slows growth. This calculator automatically stops scheduling once a sowing could not mature in time, so you avoid wasting seed on plantings that will not finish.

Tips for continuous harvests

  • Sow short rows or small blocks, not whole packets, at each interval.
  • Keep a few cells or pots started so a replacement is ready the moment a bed clears.
  • Tighten the spacing of late-season sowings, since cool weather slows maturity.
  • Rotate where each succession goes to reduce pest and disease buildup.
  • Harvest young and often to keep plants productive and beds turning over.

Frequently Asked Questions

What is succession planting?

Succession planting is the practice of sowing small amounts of a crop at regular intervals instead of all at once. Rather than harvesting twenty heads of lettuce in a single week and watching the rest bolt, you sow a short row every couple of weeks so a few are always ready. It spreads the harvest over many weeks and keeps your kitchen supplied without waste.

Which crops are best for succession planting?

Fast-growing crops that mature quickly and do not store well on the plant are the best candidates. Lettuce, radishes, spinach, arugula, cilantro, dill, beets, baby carrots, and bush beans all shine. Slower or once-and-done crops like tomatoes, winter squash, and onions are usually planted once, though even tomatoes can be staggered a little in long seasons.

How often should I plant a new succession?

A common rhythm is every two to three weeks for quick crops and every three to four weeks for slightly slower ones. The right interval keeps a steady supply without overlap. In practice, many gardeners simply sow the next batch when the previous one has germinated and put out its first true leaves, which naturally adjusts for the weather.

When should I stop planting for the season?

Stop once a new sowing would not have time to mature before cold weather or summer heat shuts it down. This calculator handles that for you: it stops scheduling plantings whose harvest would fall more than two weeks past the season end date you enter. For fall crops, count back the days to maturity from your first fall frost to find the last useful sowing date.

Does cooler weather change the timing?

Yes. Days to maturity are measured in good conditions, and growth slows noticeably in the cool, short days of early spring and fall. Late-season sowings can take considerably longer than the listed days, so it helps to space your final plantings a little closer together and to start fall crops earlier than the raw numbers suggest.

Can I succession plant in a small garden or containers?

Absolutely. Succession planting is ideal for small spaces because you use each patch of soil several times in a season instead of letting a single big harvest tie it up. As soon as one short row or container finishes, replant it. Pairing succession sowing with quick crops is one of the most productive ways to use limited space.

What is the difference between succession planting and intercropping?

Succession planting staggers the same crop over time for a continuous harvest. Intercropping grows different crops together in the same space at the same time, such as quick radishes between slow carrots. They work beautifully together: you can intercrop while also succession sowing each crop, squeezing the most out of every bed.

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GardenCalc Editorial Team

Horticulture Writers & Master Gardeners

Our calculators and guides are written and fact-checked by gardeners with hands-on experience in vegetable production, soil management, and home landscaping.