The Warren pear doesn't have a cool tag like the other trees. It's supposed to be similar to a Bosc; but it will produce in the Southern San Joaquin Valley climate. Good. Pear trees are especially good to prune in espalier. Dang, I feel so French even though the pear is from Mississippi. That gets you 1/2 way through the espalier line of trees. It's quite an orchard don't you think?