Comb hair particles that have an object as hair instances

I have an object with hair system applied and I instanced a object to the hair system. Then i go to particle edit, groom it and see nothing changes. Why can’t i groom this? Is there any bug about it?

Because i im traying to build a flower and i need to create these petals the way they look, and i just can’t (or don’t know the way) of making them look the specific way the petals look throught the particle instance options (hair). This way, i just make a couple of petals my self, and instance them as a collection on a hair particles.

Does anyone know any way or suggestion to do this?