Bartlett Pear Tree, 15 x 15. #1 pear in the world with juicy white flesh. This delicious large pear has a round bell shape on the bottom and a short neck on the top half. Bartlett is a self-fertile variety however it produces much better when planted with a partner. These famous fruits ripen in August. Amazing spring white bloom. Fruit trees need a minimum of 6-8 hours sunlight daily, and need water. They are not drought tolerant.