Well, we made it about two or three weeks further into the fall this year before having to dig up the tomatoes. Not bad for Colorado. The watermelon was a surprise, as I was no longer watering that box, covering it at night, or tending it in any way, shape, or form. I thought there were no other watermelons, but here was this lone melon hiding out at the back of the box, just growing merrily along. Sadly, it still wasn't ripe enough, so it didn't have much flavor.