Treatment for Rose Black Spot

This treatment will not harm critters such as earthworms and ladybugs.

For each gallon of distilled or rain water, mix in:
1 aspirin
1/4 cup vinegar (5% sn)
1 Tbsp liquid fertilizer
1tbsp horticultual soap or dishwashing soap

Spray leaves of rose bush and the surface of the soil under the bush.