How can I make Pink Petals (or Wildflowers) like flowers (New types of Wildflowers)

So, I want to create 3 new types of Wildflowers, Magic Wildflowers, Red Wildflowers, and Blue Wildflowers, but no matter how hard I try, it just doesn't work. I've tried different block bases, copying vanilla properties, and jsons of the wildflower, crop model, nothing worked. I found no tutorials, no forum posts. I saw an MCreator mod that adds wildflower like plants: Herios' Floral Expansion. 

Does someone know how to make a flower like a wildflower (or Pink Petals)