Very few flowers the year I grew sweet potatoes and they need ciopious feeding and watering as well as heat. Probably better to stick to flowering varieties of ipomea.
"We don't stop playing because we grow old; we grow old because we stop playing." - George Bernard Shaw
I tried it, lots of leaves but the flowers were tiny and not worth waiting for.. the foliage was nice and lush but easily took over a large window box, so unless a hanging basket is really bid I’m not sure you could plant anything with them.
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for the fag ends of the aristocracy.