If Neil Sperry were a flower, he’d be a perennial. It simply wouldn’t be a planting or blooming season in Dallas without him, and I can’t remember a time when I didn’t hear his voice on the radio talking plants. Sperry’s All Texas Garden Show opens tomorrow, February 29, with some demonstrations, including Growing Orchids and Pet Friendly Gardens. Highlights of the complementary lecture series on March 1 & 2 include area experts discussing Absolutely Fantastic Azelas; Gardens that Work, Gardens that Don’t; Honeybees 101; and Texas Tough Plants.