Plants, mankind’s greatest enemy, are finally on the ropes thanks to global warming. Teach your children how to hunt the last of these enormous nitrogen junkies by observing them in captivity with today's Groupon: for $12, you get a one-year individual membership to The Arboretum, State Botanical Garden of Kentucky (a $25 value).

The Arboretum maintains more than 100 acres of idyllic landscapes, year-round plantings, and educational exhibits. While admission to the garden is free, members receive a subscription to the quarterly newsletter, 10% off regularly priced items at garden centers, members-only events, free or discounted admission to arboretum programs, and more. Earthy enthusiasts can stroll through the perennial, fragrance, herb, and rose gardens, gazing at sunny petals and sniffing scintillating aromas. The Walk Across Kentucky collection boasts two miles of native plant life, illuminating the wild beauty of seven in-state physiographic regions while saving guests the approximately 166 hours required to actually walk across Kentucky. The freshly planted 1.85 acre Children's Garden exposes green thumbs aged 2–10 to the wonders of nature and the basic principles of environmental stewardship (extra admission fee for the children's garden). The gardens bloom for visitors to behold from dawn until dusk every day of the year.