icepick wrote:
Nobody knows about these? Interesting. A flat, or gently sloping roof is a great place to grow these things. But why did they mention sweet potatoes, but not regular potatoes?
I learnt about it in school long ago......   uumm sweet potatoes are healthier.  smiley: smile


"What lies behind us and what lies before us are small matters compared to what lies within us."  ~ Ralph Waldo Emerson ~