The Blenheim apricot is a self-fertile apricot that is probably the world's most popular. Considered by many to be the most flavorful apricot, the Blenheim is sweet, juicy, large, producing earlier in the year than other apricot trees. Besides its outstanding fruit productions, the rounded leaves make this tree a nice addition to the landscape. 400-500 chill hours. Zones 4-8.