American history is rife with tales of heroic gardeners, from Johnny Appleseed's tree-planting quest to Andy Jones's triumphant Connecticut quarter design. Join their ranks with today's Groupon: for $25, you get $50 worth of trees, plants, flowers, and supplies at Armstrong Garden Centers, with two Bay Area locations.

With a verdant variety of shrubs, trees, roses, and vines, the friendly plantologists will help you wade through the veritable ocean of foliage. Beginning green-thumbers can take advantage of a jumbo planting kit, including ample plant food, vitamin B1, and planting compost—everything a person needs to lure an unsuspecting plant into captivity ($15.97 for the regular kit; $29.97 for the jumbo kit). Advanced yard-enhancements abound in the form of trees and shrubs, such as a selection of 5-gallon citrus trees, good for accenting a living space and forming a focal point for the worship of the Lemon Pledge gods ($34.99). Armstrong can also help organic gardeners reach full-flavored nirvana with a bevy of 3-inch container plant varieties ($2.99; selections vary by season and location).