Kitty Barrett Pozer, 93, who wrote a garden column for The Washington Post for nearly 25 years using the first name of Katherine, died of cardiac arrest Saturday at Iliff Nursing Home in Dunn Loring, Va.

Mrs. Pozer was the owner of Earl's Ordinary, a restored inn and stage coach stop in Fairfax City which was built before 1750. She lived there before moving to the nursing home two years ago. She donated the house and its historic contents to the City of Fairfax to be used as a museum after her death.

Born Kitty Barrett in Henderson, Ky., she married Charles H. Pozer, a Canadian civil engineer, in the early 1900s. During World War I, when her husband served overseas with the Canadian Army, she was an ambulance driver in England and France for the Canadian Ambulance Corps.

After she and her husband moved to Virginia in the early 1920s and purchased Earl's Ordinary, Mrs. Pozer was instrumental in restoring the Town Hall of Fairfax. Mr. Pozer died in 1947.

Besides writing her garden column for The Post, Mrs. Pozer was a founding member of the Garden Club of Fairfax and held a number of offices with the Garden Club of Virginia and the Garden Club of America. She also was a judge for flower shows on the East Coast.

She was a member of the National Society of Colonial Dames, a member for more than 50 years of Truro Episcopal Church in Fairfax and a life member of the National Press Club here.

She leaves no immediate survivors.