My question is should I deadhead the rose bush or let it form the hips? Will I have more use for petals or hips?

I am new to herbalism and would like to keep the more beneficial form.

ALso, rose petals, should I put them into oil or water to keep for future use?

I appreciate any and all help you can provide.
Thanks,
Carrie

You can have both. As the flowers fade, gently collect the petals by knocking them from the flower, leaving the flower stem intact. The hips will form if you do not cut the flower but simply pick the petals.