A great source of trace elements for fertilizing and soil conditioning Alfalfa Meal is loved by roses and earthworms alike. Works very well as a compost bio-activator due to its remarkable nitrogen to carbon ratio and also makes a great mulch for use in the planting and growing stages of your plant's life. Application Rate: Apply 5 to 10 lbs per 100 sq.ft. Additional application rates included on package. Available in 5 lb. boxes and 25 lb. bags.