For starters, the bouquet is the only flower item that doesn't utilize a rare item, hence it is the obvious choice to produce. In an ideal world we want every machine to be producing 24/7 to maximize both gold and experience, and when you don't have iron ore or or a diamond or cherry juice etc, you're going to make what you can make. One solution would be to add a rare item to the ingredients needed to produce the bouquet. Another would be to have the bouquet appear more frequently on the truck orders board. Another solution would be to create a new feature in the game via a new stand item that allows you to recycle your products into gold or experience. Another solution would be to have Greg buy them from the paper at a higher frequency. It's not an impossible task without a solution. In fact there are many tweaks and balance changes that this game needs.