Recede or recede means to withdraw or move away --
We'll know the extent of the damage when the floodwaters recede.
His hairline is beginning to recede; did you notice?
Recede may also mean to give something back, usually a piece of land, to someone who owned it before --
We are making arrangements to recede the valley to their ambassador.
Reseed or reseed ( rhymes with recede ) means to sow the propagating parts of a plant ( seed ) again ( re- ) --
The grass is dying; we'll have to reseed this patch.
We can reseed it in the Fall.
Now that you know that, you can say --
"If the new grass starts to recede, we will reseed it next year."
