Technical Abstract: Vegetative growth management is essential in a modern high density apple planting to reduce pruning costs and prevent excessive vegetative growth that reduces light and spray penetration into the canopy, lowering fruit quality and return bloom. Plant growth regulators have been used since the 1960's to inhibit shoot elongation and help maintain apple tree canopies within the allotted planting space. This study examines the effect of multiple spray applications of Apogee on shoot growth and whole-canopy photosynthesis (WCPn) rate in young, bearing apple trees. Apogee increased fruit numbers and reduced shoot growth and inconsistently reduced leaf area; however, the reduction in photosynthetic area did not result in reduced WCPn or a detrimental effect on the fruit number:fruit size relationship. The use of Apogee for canopy management may produce a side-effect of increasing fruit set, which may be managed through a crop thinning program.