Bartlett Pear, Pyrus Communis 'Bartlett', 30 Tree Seeds (Fast, Hardy, Fall Color) Bartlett Pear, Pyrus communis 'Bartlett', 30 Tree Seeds Zone: 5 to 9 #Growth Rate: Fast #Plant Type: Deciduous Fruiting Tree #Family: Rosaceae Height: 15 to 20 feet #Spread: 10 to 15 feet #Shape: Dense broadly pyramidal to rounded. #Bloom Color: White #Flower/Fruit: White flowers, 1 to 1.5 inches across with five petals followed by edible fruit. Site Requirements /Soil Tolerances: Pears tolerate heavy, poorly drained soils better than most tree fruits. However, productivity is best on deep, well-drained loams with pH 6-7. Pears have very similar climatic requirements to apples, but are much more prone to fire blight and therefore cannot tolerate humid, wet springs. Pears require 900-1000 chill hours to break dormancy, although many Asian pears have lower chill requirements and can be grown as far south as northern Florida. Pears have similar or slightly lower cold hardiness than apples, tolerating -10 to -20 F. Pears bloom 1-3 weeks before apple, and are therefore prone to frost damage in most regions. Pears mature in as little as 90 days or as long as 200 days. Uses: Group or specimen. Small shade tree. May be used as a street tree. A very good choice for colder climates and very ornamental. May be espaliered or Bonsai.