Ulcers and Sores, Carrots will heal

"Boil carrots until soft and mash them to a pulp, add lard or sweet oil sufficient to keep it from getting hard. Spread and apply; excellent for offensive sores. Onion poultice made the same way is good for slow boils and indolent sores." This makes a very soothing poultice and has great healing properties.

Source: Mother's Remedies: Over One Thousand Tried and Tested Remidies from Mothers of the United States and Canada, T. J. Ritter