We grew this thai bottle gourd called Nam Tao Klom on a trellis on the deck with very little soil and in extremely hot weather. The plant was very tolerant of drying out. There were many small gourds that started to form but only one grew to this size. There would have been many more to pick if growing conditions were better. I believe this is the gourd that I had eaten in a curry in a vegetarian restaurant in Thailand that was the most amazing texture and flavor mashup with the vegetarian curry. It was truly amazing. Other names for this might be white flowered gourd or Upo or Opo in the Philippines.