overplant

verb

Etymology: From over- + plant.

To plant too many plants (of any particular crop).
“With choice hybrid seeds being so expensive, it pays not to overplant if you can help it; pick your seed plates carefully.”
To plant too many of (some kind of plant), whether by sowing or by transplanting.
“Growers in the region had overplanted their wheat in a desperate attempt to mitigate slim margins by "making it up on volume".”
“He overplanted tobacco in his eagerness for a cash crop with higher margins.”
To plant (a place) with too many plants.
“The entire breadbasket region was overplanted with cultivars that were more disease-prone but had the dubious advantage of lower seed cost.”