We don't have synonyms for overseed yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are overhead, overset and overseas.
(v) :
To replenish (a pasture, lawn, or field) by adding more seeds over top of the existing vegetation (as opposed to tilling and replanting the land).
(v) :
(rare) To sow excessively, at overdensity of seeds per unit area.
(v) :
To replenish (a pasture, lawn, or field) by adding more seeds over top of the existing vegetation (as opposed to tilling and replanting the land).
(v) :
(rare) To sow excessively, at overdensity of seeds per unit area.