The complete development of the growing tip of the lateral fruit spur of the Wagener apple, from the time of its initiation until it produces mature fruit, requires four seasons. These are referred to as years I, II, III, and IV. The development during years I, II, and III may be divided into six typical phases. The growth during each of these phases is characteristic and different from that of any other stage. The phase just before initiation of the flower extends through June and the first half of July of year III ("off"). During this period the crown broadens and flattens, the pro-meristematic tissue becomes shallow, the scale and leaf primordium bases remain level with the crown and the pro-vascular strands and pith become broadly hemispherical. This phase is followed by flower formation, which is initiated during the last part of July, by the triangular, horizontal, upper surface of the crown becoming circular and developing five sepal primordia for the terminal flower. The flower cluster as a whole is "determinate", but its lateral flowers are axillary in origin and appear in acropetal succession. It is suggested that the changes occurring in the tip of the "off" spur during June, namely, the broadening and flattening of the crown, etc., may be an indication that physiological differentiation of the crown into flower-forming tissue is taking place.