The information below will guide you in purchasing a properly sized wire basket for your evergreens, conifers, spreading trees, and shrubs. Single stem trees Types 1, 2, 3 Caliper, height or spread Minimum diameter ball/basket 1/2″ 10″ 3/4″ 10″ 1″ 12″ 1-1/4″ 14″ 1-1/2″ 16″ 1-3/4″ 18″ 2″ 20″ 2-1/2″ 20″ 3″ 28″ Trees Types 3 and 4, Height up to 6’, Caliper over 6” Caliper, height or spread Minimum diameter ball/basket 2 ft. 10″ 3 ft. 12″ 4 ft. 14″ 5 ft. 16″ 3/4″ 16″ 1″ 18″ 1-1/2″ 20″ 1-3/4″ 22″ 2″ 24″ 2-1/2″ 28″ 3″ 32″ 3-1/2″ 38″ 4″ 42″ 4-1/2″ 48″ 5″ 54″ 5-1/2″ 57″ 6″ 60″ 7″ 70″ 8″ 80″ Small spreading trees Type 4 Caliper, height or spread Minimum diameter ball/basket 2 ft. 10″ 3 ft. 10″ 4 ft. 12″ 5 ft. 12″ 3/4″ 12″ 1″ 14″ 1-1/4″ 14″ 1-1/2″ 14″ 1-3/4″ 18″ Spreading, semi-spreading, and globe or dwarf conifers Types 1, 2, 3 Caliper, height or spread Minimum diameter ball/basket 9″ 8″ 12″ 8″ 15″ 10″ 18″ 10″ 2 ft. 12″ 2-1/2 ft. 14″ 3 ft. 16″ 3-1/2 ft. 18″ 4 ft. 21″ 5 ft. 24″ 6 ft. 28″ 7 ft. 32″ 8 ft. 36″ Cone and broad upright broadleaf evergreens Types 4 & 5 Caliper, height or spread Minimum diameter ball/basket 18″ 10″ 2 ft. 12″ 3 ft. 14″ 4 ft. 16″ 5 ft. 20″ 6 ft. 22″ 7 ft. 24″ 8 ft. 27″ 9 ft. 30″ 10 ft. 34″ 12 ft. 34″ 14 ft. 42″ 16 ft. 46″ 18 ft. 50″ Conical and broad upright conifers Types 4 & 5 Caliper, height or spread Minimum diameter ball/basket 10″ 10″ 18″ 10″ 2 ft. 12″ 3 ft. 14″ 4 ft. 16″ 5 ft. 20″ 6 ft. 22″ 7 ft. 24″ 8 ft. 27″ 9 ft. 30″ 10 ft. 34″ 12 ft. 34″ 14 ft. 42″ 16 ft. 46″ 18 ft. 50″ Columnar conifers Type 6 – REGULAR growing Caliper, height or spread Minimum diameter ball/basket 12″ 10″ 18″ 10″ 2 ft. 12″ 3 ft. 13″ 4 ft. 14″ 5 ft. 16″ 6 ft. 18″ 7 ft. 20″ 8 ft. 22″ 9 ft. 24″ 10 ft. 27″ 12 ft. 30″ 14 ft. 33″ 16 ft. 36″ 18 ft. 40″ Columnar conifers Type 6 – RAPID growing Caliper, height or spread Minimum diameter ball/basket 12″ 8″ 2 ft. 9″ 3 ft. 9″ 3 ft. 11″ 4 ft. 12″ 5 ft. 14″ 6 ft. 16″ Deciduous shrubs Stem or cluster center must be in center of the ball Caliper, height or spread Minimum diameter ball/basket 12″ 8″ 18″ 9″ 2 ft. 10″ 3 ft. 12″ 4 ft. 14″ 5 ft. 16″ 6 ft. 18″ 7 ft. 20″ 8 ft. 22″ 9 ft. 24″ 10 ft. 26″ Share this post: Facebook Twitter Pinterest Linkedin Back to Resources 844-522-1887 150 Bridgepoint Dr, Ste 200 - South St Paul, MN 55075 Hours: 8am to 5pm - Mon. through Fri. Privacy Policy | Site Disclaimer Get A Quote Download Catalog