This is a great lesson that is interactive for all of the students. The one thing you need to make sure of is if any of the students have allergies they would either need to take medication before hand or that they would not be allowed to partake in that portion of the lesson handling the flowers.
I really liked the coloring the parts of the flower worksheet because the visual students will be able to understand and comprehend things better in this way, as well as those who benefit from writing things down with the descriptions that are on there as well.