PEOPLE: ADRIAN BLOOM - With a surname like Bloom, Adrian may have been destined for the plant business from birth. Now the patriarch of the family's plant empire since his father's passing in 2005, Adrian Bloom may just be the world's pre-eminent gardening ambassador. PLACES: TOWER HILL BOTANIC GARDEN - Visit the orangerie at Tower Hill Botanic Garden to learn about the history and function of glass structures. PLANTS: WOODY PLANTS - Roger and Wayne Mezitt of Weston Nurseries teach us about woody plants with winter color. FOOD FOR THOUGHT: WITCHHAZEL - These unusual shrubs flower from late fall to very early spring. They are easily overlooked if you only go shopping in May, but their dramatic blooms are worth their weight in gold when snow is forecast. Roger tours a collection of witchhazels in their glory.