So I'm trying to figure out why my mulch calculations are off this year....

Saturday, I had 60 cubic feet (a little more than 2 cubic yards) of mulch delivered to my house so I could tidy up the flower beds, around the trees, and create a new flower bed in the back yard. I calculated 60 cubic feet based on the fact that last year, I used 45 cubic feet and it was just right, but that this year, I had one less tree to mulch around (the county took the tree out - BGE installed the street light too close to the tree and the tree got to leave [no pun intended]), which should have meant 3 cubic feet less, and the area of the new flower bed was about the size of the side flower bed, which takes generally about 12 cubic feet. Net gain of 9 cubic feet, so adding 15 cubic feet should have been plenty, right? Wrong. I'm going to be short at least 12 cubic feet.

Another cubic yard over last year...

My math has got to be faulty somewhere. Probably the same reason the yard isn't greening up - I probably have a fertilizer miscalculation....