Our semi-dwarf Apricot trees grow 12 - 18 feet in height and about as wide as the amount of space provided, which is usually about 10-15 feet wide. Plant Apricot trees closer together or further apart to 

 

In commercial orchards Apricot trees planted in rows might have 20 feet of space between rows for farm equiptment. In home orchards this is not needed, and trees are often incorporated in the landscape or rows are planted close together only allowing space for walkways.