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 this Groupon.

$15 for $30 Worth of Plants and Garden Goods

A verdant display of seasonal plants and gifts tempts green thumbs with items such as Japanese Maples (starting at $49.99), azaleas ($18.99), pansy hanging baskets ($14.99), large moss hanging baskets ($59.99), and shrubs ($9.99–$199). Other offers include air plants (starting at $4.99), weeping cherry trees ($159.99), and honeysuckle vines ($27.99).

McCue Garden Center

Founded by John McCue in 1933, McCue Garden Center has passed down through three generations of tree tenders and plant whisperers. Now, 79 years later, the family's center has blossomed to include two locations: the garden center in Woburn, and McCue's Flower Outlet in Billerica. Along with a knowledgeable staff, the McCue family helps visitors at each of the locations select healthy flowers, shrubs, and trees from the nursery or organic soils and fertilizer from the store, and oversees an adjoining florist shop, which churns out colorful arrangements and lovely long-stemmed roses daily. They update the store's ample inventory to suit the seasons, with selections such as statuary, flowers, and vegetable plants in the summer and fresh balsam Christmas trees, wreaths, and poinsettia-shaped snow cones in the winter. In addition to celebrating the earth's constant revolution with a rotating array of seasonally appropriate plants, they host a wealth of holiday festivities, from October's corn maze to spring's Easter-egg hunt.