Pearl E. Jensen, 70, who was active in art and garden organizations in Northern Virginia, died of cardio-respiratory arrest March 1 in her home in Falls Church.

She was president of the Neighborhood Garden Club of Arlington from 1968 to 1969, and was founder and first presient of the All Seasons Garden Club of Northern Virginia. She also was a master judge with the Council of Accredited Flower Show Judges.

Mrs. Jensen had studied Oriental brush painting. In addition to eshibiting her work in local art shows she taught brush painting as part of the adult education program in Fairfax County.

She accompanied her husband, retired Air Force Col. Oral Jensen to posts both here and abroad. While in Japan in the early 1950s, she studied Japanese flower arranging under Grandmaster Koha Taira, and became active in the Ikebana International, a flower arrangement organization.

She also studied under Houn Ohara, headmaster of the Ohara School in Kobe, Japan. In recent years she had been active in the Ohara School in Washington.

While living in Hawaii in 1961, Mrs. Jensen helped found and was first president of Chapter No. 56 of the Ykebana International.

In May 1979, she completed the second degree of the master's course of the Ohara School of Ikebana.

Mrs. Jensen was a native of Winchester and a 1930 graduate of the Strayer Business College.She worked with the Federal Trade Commission and then the Air Force Department until 1950.

Her first husband, Chester Naylor Veach, died in 1945.

In addition to her husband of 28 years, of Falls Church, Mrs. Jensen is survived by a son, William N. Veach of Arlington; three sisters, Kathryn Bruton of Silver Spring, Blanche Boger of Front Royal, and Grace Rudy of Martinsburg W.Va.; two brothers, Thomas R. Dove of Sharpsburg, Md., and Jacob P. Dove of Fairfax, and two grandchildren.