Hey Bart, I live in S. Carolina, and I have 3 pear trees in my backyard. They are 4 y.o., they have lots green leaves and branches, but as of yet, they bear no fruit. I use a fertilizer, 6-10-10 mixture, is this the correct one to use to get pears? Or should i just pick some up at the grocery.My husband wants a pear tart, and he's getting impatient. Please help!