i want to overseed a small portion of my lawn, roughly 550 square feet.  there are a lot of bare spots, and some grass blades have these weird buds on the tips of them.  i adjusted my lawn mower to the lowest setting and once i was down mowing, the lawn looked a lot cleaner.  
my question is, do i have to rake the existing grass with a rake or dethatch rake? some areas are bare, and some areas are fine. if i don't, is the next step to spread the seed and fertilizer, or do i apply the topsoil first to the lawn? or seed/fertilizer first, then topsoil?
	
		
			
		
		
	
			
			my question is, do i have to rake the existing grass with a rake or dethatch rake? some areas are bare, and some areas are fine. if i don't, is the next step to spread the seed and fertilizer, or do i apply the topsoil first to the lawn? or seed/fertilizer first, then topsoil?
