Why won't my tomatoes ripen? They should be red by now, but they're stuck on green. Why won' they turn red??? Starting in mid to late summer, It's the most common question I get. Fear not because it's nothing you're doing wrong. But Mother Nature is at work, and you'll be rewarded for your patience. In this podcast, Joe Lamp'l demystifies the reasons why tomatoes take their sweet time to ripen.