Not sure if this post belongs in Fertilizer or lawn renovation so I just put it here. I've got about 7000 sq/ft of yard space that's in pretty bad condition. The results from the soil test confirm this. I have mostly sunny areas with about 600-1000 ft' of mostly shady areas. Two large spruce trees contribute to my acid problem. Soil is pretty clay rich and not a whole lot of healthy grass. I have a lot of crabgrass and broadleafs that I sprayed a few weeks back with 2-4D with pretty decent results. Most of the crabgrass is brown and dead but most of the broadleaves still exist. The majority of what turf I have is KBB with some fine fescue in the shadier areas. I do also have some moss growing I believe due to the low pH. I cut the grass all summer long at a pretty high setting which kept it green. But before spraying a few weeks back I began a process of shortening my cuttings. I'm not scalping it but I am cutting pretty short in anticipation of overseeding soon. My original plan was to rent a slit seeder early september and dry run it a few times to dethatch and then seed heavily. I plan to topdress to some degree with top soil and compost. Then come spring I planned on aerating, and applying a pre-emergent to revent the crabgrass from coming back. By that time I hope my lawn is much thicker and can better defend itself against broadleaves and crabgrass. Anyway, I got the results back from the lab and they read as follows: pH = 4.8 !!! P = 33 lbs/acre MED K = 190 lbs/acre HIGH CA = 1490 lbs/acre MED MG = 153 lbs/acre MED Here are their recommendations: Aglime = 170lbs/1000 sqft !!! (~1200lbs for my lawn?) Nitrogen (N) = 3 lbs/1000 sqft Phosphate (P205) = 1 lbs/1000 sqft Potash (K20) = 0 lbs/1000 sqft You can use any fertilizer that supplies the plant nutrients recommended. Apply all of the P205 and K20 and approximately 2/3 of the N in the fall and the rest of the N in the spring after the flush of spring growth. AS you can tell the soil is in bad shape. With all of my ambitious plans what should I do now? Do I seriously need to put down 1170lbs of aglime all at once? Can I do this right now and then seed in 2-3 weeks? Will this in any way hamper seed germination? As you can probably guess the spruce trees might have something to do with the pH problem. This is my first summer in the house so I'm not sure what type of lawn maintainance the previous owner performed. Obviously he never added lime Whats my game plan fellas?