The silvery-white undersides of the needles can be seen as they curl around the branches of this ‘Silver Show’ Korean fir. Photo courtesy Buffalo and Erie County Botanical Gardens by Connie Oswald Stofko Three interesting dwarf shrubs are among the new offerings at the Great Plant Sale to be held this week in the Administration Building at the Buffalo and Erie County Botanical Gardens, 2655 South Park Ave., Buffalo. Also new this year is a checkout process that should speed…