Without trees to generate oxygen, humans would have to retrieve it from scuba tanks and the minty breath of local supermen. Keep the air alive with today's Groupon at Knox Nursery Inc. in Winter Garden. Choose between the following options:

• For $10, you get one flat of SunPatiens (a $29 value).
• For $20, you get $40 worth of flowers and plants.

Act fast as the SunPatiens option expires August 15, 2011.

Beautifying gardens and backyards since 1962, Knox Nursery houses more than 5,000 varieties of plants throughout its expansive 23 acres of production. Chlorophyll cultivators can enhance even sun-drenched terraces and garden patches exposed to the most abrasive heat with a flat (16) of SunPatiens. With their thicker leaf walls, New Guinea flowers, and robotic misters affixed to each pedal, SunPatiens thrive in the excessively warm and humid temperatures that typically wilt less hardy greenery. The sun-loving SunPatiens can grow to a height of about 18–30 inches and can bloom through the summer and even endure a light frost. Alternately, flora fawners can also opt to vivify conservatories by choosing from the nursery's expansive menu of plants and flowers, including 3-gallon selections of lorapetalums ($9.99), hibiscus ($9.99), and knockout roses ($19.99).

The staff at Knox Nursery cradle each of their precious seedlings in the eco-friendly embrace of Ellepots. Composed of degradable paper that promotes more air exchange than plastic pots, Ellepots facilitate healthier root systems, faster growth, and well-adjusted blooms less likely to experiment with discarded cigarette butts during turbulent teen years.