First frost, again

Sweet potatoes: in the ground... This year, the spring in southern Indiana was very early, with shirtsleeves weather by mid-March. The first frost also came a bit earlier (around Oct 9) than the last year. Just a light patchy frost, completely killing only the "subtropical" type plants, such as the silk melon (AKA loofah 丝瓜), bitter melon (苦瓜), winter melon (冬瓜), the vines of sweet potatoes (山芋). This of course is a signal to harvest your
... and out.