Bell Peppers

Bell peppers take a bit longer than some entries on this list (70-80 days), but they're incredibly low-maintenance once established. They thrive in containers, produce colorful fruit that ripens from green to red, yellow, or orange, and a single plant can yield 6-8 peppers per season. The trick beginners miss: let them ripen fully on the plant for maximum sweetness. Green peppers are just unripe — red bells have twice the vitamin C and three times the sweetness.