Composting Spent Hops: Great for Soil, But Toxic to Dogs

Spent hops from brewing are nitrogen-rich “greens” that compost well—similar to grass clippings. Mix with ample browns (shredded paper, sawdust, dry leaves) to prevent anaerobic, smelly conditions. Turn regularly; add woody twigs for air pockets. Check moisture: squeeze a handful—should hold together like a damp sponge, not drip.

Critical Warning: Hops Are Highly Toxic to Dogs

Even small amounts can cause malignant hyperthermia (uncontrollable temperature rise), seizures, and death within 6 hours. Cats may also be at risk. If you have pets, do not compost hops. The danger outweighs the benefit.