Daniellle,
Pear trees are not self-fertile and you would need another pear tree of a different variety. Try Bosc, Seckel or Comice. All these produce good fruit and will pollinate your Bartlett or Kieffer.
Marcos Camargo
fruit-tree.com nursery
Hillsboro, Oregon, USA
Visit us at
http://www.fruit-tree.com
our motto: "Preservation by dissemination"