I was hoping u could tell me what is the best type of weed killer to get for a grave,my dad passed b4 xmas so its almost 8 months now and the earth has settled,i want to put down weed killer as although ive raked and weeded the grave regulary they keep coming back,i suppose all the rain we have had hasnt helped!! also after weed killer whats the best gap to leave before peat moss and then grass seed.