In those plants with a single reproductive episode, called monocarpics, the onset of reproduction is marked by the formation of the first flowers. The signals that control the start of flowering are highly studied (light, seasonal changes, temperature, age of the plant, etc.). However, there is another critical event for reproduction: its end. In many species, flower production stops after the production of a certain number of fruits. This stoppage is marked by the cessation of the activity of meristems, the stem cell reserves that maintain the growth and production of plant organs.
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Source: Phys.org