Allen and Ginter came out with a pretty unique set in 2011 with it’s Flora of the World subset. There are only five cards in the set, but each card highlights a plant and also contains actual seeds from that plant that you can plant and watch grow!
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2011 Allen and Ginter Flora of the World Checklist
FOW-1 Black-Eyed Susan
FOW-2 Spurred Snapdragon
FOW-3 Shirley Poppy
FOW-4 Mexican Hat
FOW-5 Sweet Alyssum