Question: what are ashes from the fireplace good for?
Answer: Add it to your compost. Compost is naturally acidic so wood ash is a great addition, plus it adds calcium. ... 
Use it to de-ice instead of salt. ... 
Fight algae. ... 
Feed your tomatoes. ... 
Use the ashes to clean. ... 
Make soap. ... 
Wood ash makes a great repellent for snails and slugs.