How do I do this? I have the lagoon, master scientists builders, and farmers. I've taken the all to the field in the upper right hand corner of the screen (next to the cave) and the all say additional research may be necessary. What am I missing??

Thats the wrong field for the flowers the field by the cave thats sort of brown looking is for another puzzle - the field for the flowers is pretty much right underneath that one looks like a patch of green grass its also pretty much right above the stone ruins too. Hope i helped