Chefs, gardeners and gourmets are passionate about organic heirloom tomatoes. Now, anyone can successfully grow them with hardy plants, a growing kit and just the right amount of guidance.

Windowbox.com is shipping organic heirloom tomato plants nationwide, with complete directions and a 100% guarantee. A single plant costs less than a pound of store-bought heirloom tomatoes and can produce 30 lbs. of tomatoes over the entire summer ($25.99 per 6-plant pack).

“Those mealy red things in the supermarket aren’t tomatoes,” says Windowbox CEO Ben Swett, a dedicated gardener. “Real tomatoes have full flavor and can look really weird, with their unusual colors and shapes.”

If you’re new to organic gardening, you may struggle when deciding which varieties to plant. Windowbox.com attempts to make life easy by offering three flagship collections:

• Flavor Kings (the best-tasting heirlooms)
• Windowbox Wonders (which thrive in containers)
• Candy Box (bright-colored and extra-sweet cherry tomatoes, which are fun to grow with children)

These all-in-one kits include extra-hardy plants, special tomato food, plant markers, and printed and online care instructions to ensure customer satisfaction.

To be considered an heirloom variety, a tomato must have been available for at least 50 years and must have a distinctive quality and traceable heritage. Heirlooms have other benefits: They’re good for you. Tomatoes are high in vitamins A and C, calcium, potassium and the powerful antioxidant lycopene, which has been linked to a reduced risk for gastric, prostate, ovarian and pancreatic cancer.