by bpgreen on January 9th, 2009, 2:40 pm
Starbucks has a corporate policy to make their used coffee grounds (UCG) available for free to anybody who wants them. This only applies to the stand alone stores, not the ones in places like bookstores airports, etc. Some stores don't save them if nobody is picking them up because they start to smell, but if you start stopping in and asking for them, they'll probably start saving them.
If I get them in the silver bags (repacked in the bags they came in), I walk around the yard backward, shaking the bag and moving it back and forth. If I get the big trash bags, I dump them in a bucket and use a scoop to fling them around. I spread them until I run out, then when I get more, I pick up where I left off. When I finish the lawn, I start over again. You don't need to worry too much about getting them distributed completely evenly as you do with synthetic fertilizers, because they won't produce the flush of growth that you see with synthetics. Don't spread them more than about 1/4 to 1/4 inch thick because they can repel water if they get too thick and dry out.
One thing to keep in mind is that if you have a large lawn it might not be practical to use only coffee grounds. I've got about 4000 sq ft, and really only use the UCG on half of the lawn (I let the dog fertilize the back). UCG are about 2% N, so to get 1 lb of actual N per 1000 sq ft, you need to spread 50 lbs per 1000 sq ft. To get 3 lbs of N per 1k sq ft per year, that means I need to spread about 300 lbs a year in total. That's not all that tough to do the way I do it. If you have a larger lawn, it might become impractical to try to use only UCG.