Answer: Moonflowers are available in only one form, and as far as I know all of the climbing morning glories grow at about the same rate. They will grow fastest with warm temperatures, ample water and at least average fertility. The vines grow relatively quickly but unfortunately the flowers generally don't start until mid to late summer no matter what you do. If you need shade you might consider adding trellis in removable panels so you can enjoy the sun during the winter but have shade in the summer.
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