Ask-a-Dave's-Gardener: Baptisia not blooming, 1 by MegInKS

MegInKS wrote:
My 10 year old Baptisia Austalis hasn\'t bloomed for the last three years. I have done nothing different to it. I don\'t fertilize it, or do anything to it other than leave it be, remove the old foliage in the spring. The first sign I noticed was weak blooming, then the last two years, nothing. SW exposure, plenty of sun, zone 6 (formerly 5b). I haven\'t called my extension office yet. My master gardener friend said perhaps our winters haven\'t been hard enough recently. I\'m thinking of trying to remove it and replace it with Amsonia hubrichtii. Ideas?