as far as I know, it would include the flowers and fruit. I don't know how you could get the fruit to dry good though. I think it would cause the rest of the plant to mold if it wasn't handled correct.; You might pull the fruit off and try to dry it seperate from the leaves and vine. Why powder it? you need an exspensive machine to powder stuff in large amts.
Sticky as the fruit is I doubt it would ever dry. I have seeds from last year that I never cleaned and they are still somewhat sticky. I have used it as a sleep aid. Being able to powder it and capsule it is much more convenient than chopping it and making tea. I also dabble a little with seeds and such on Ebay. Way too much of this stuff to unload on Ebay though. When they say it is invasive they are very correct.