Repeating a sowing every fortnight does not guarantee uninterrupted harvests. Continuity depends on how long each batch takes to reach its harvest window and how long that window lasts.
The Succession Sowing Planner lays out batch sowing dates, first harvest dates and inclusive window ends. It also compares the sowing interval with the entered window length to show a simple gap or overlap between consecutive batches.
Six fortnightly batches
Start on 15 October 2026 with six batches, 14 days between sowings, 35 days from sowing to first harvest and a 14 day harvest window. At 20 plants per batch, the plan contains 120 plants altogether.
The first batch's harvest window starts on 19 November and ends on 2 December. The second starts on 3 December and ends on 16 December. Under these entered durations, the windows meet without a day between them and without overlap.
That zero gap comes from equal 14 day intervals and 14 day windows. It is not evidence that each plant will produce a steady amount on every day in those ranges.
What a gap or overlap means here
Change the interval to 20 days while keeping the window at 14 days, and the tool reports a six day gap. Change the interval to ten days and the windows overlap by four days.
The calculation compares adjacent batches with identical durations. It does not shift later batches for seasonal temperature, delayed germination or a different harvest pattern. Each sowing advances by the same interval from the first start date.
Maturity in this planner is counted from sowing. If your packet states days from transplanting, convert that to an appropriate total from sowing before using it here. Sowing and Harvest Date Planner can help keep those stages distinct for an individual crop plan.
Count plants across time carefully
The total plant count is the sum over all batches. It is not necessarily the maximum number of plants occupying the bed on one date, because this worksheet does not calculate clearing dates or available bed capacity between crops.
Check the physical growing space separately with Plant Spacing Calculator and decide when an earlier batch is removed. Harvest windows alone do not show when its roots and stems stop occupying the ground.
Save the schedule with the maturity basis and window assumptions. Later observations can tell you whether to adjust the interval or use different durations for a new sequence. If changing the plan produces an overlap, consider the extra harvest handling and space involved rather than treating every overlap as an automatic improvement.