Have a look at Kents expectations for the flowers in Daphne’s WIP thread
https://blog.cgcookie.com/forums/topic/rigs/
So,
no sculpting
do try to keep the Vertex count low (using whatever methods you can think of)
work on how to distribute the flowers
the poppy seeds seem a bit overkill to model, but painting them or even just a suggestion of them would be fine
as for the types of flower; look at the artwork and give your own interpretation of what you see, or what you think might fit well in the scene (very vague, I know, but you shouldn’t feel too restricted in your choices)