overplant

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.