[Sew_Sumi]

Damn, stop guessing, and start reading to learn about Arrays.

Jesus... The reason it only puts out one, is that /plantseeds ONLY DOES ONE.

Код:

WeedPlants[playerid][0] = CreateObject(3409, Weedx[playerid], Weedy[playerid], Weedz[playerid] - 1.3, 0.0, 0.0, Weeda[playerid] + 90);

The count isn't going wrong, the error is in you thinking that this code, will do more than what it does.