Like most gardeners, I have favorite plants I’ve been growing for years and will continue to grow, like fragrant and tasty Big Boy tomatoes, wide Romano-type Italian flat beans, climbing zucchini and Queen Lime Mix zinnias. But I also like to try new plants. So, it’s helpful to know that each year, the independent, non-profit All-America Selections organization enlists more than 80 horticulture professionals from around the U.S. and in Canada to serve as plant-trial judges.