How to measure fertilizer?
I had a soil test done by my extension office. The recommendation came back to "Apply 4 lbs (8 cups) of 5-10-5 per 100 square feet.
Does 8 cups actually weight 4 lbs? Do they literally mean use something akin to a measuring cup and spread out 8 cups? Or distribute 4 lbs? Those are equivalent measures?
I have a 20x20 garden, or 400 sq ft. Do I go shopping for a 20 lb bag of 5-10-5 and spread 75% of it evenly over my garden?
Thanks- real rookie here!