Reply To: Yellow color at the base of cutting Home › Forums › Cactus and Succulent Care › Yellow color at the base of cutting › Reply To: Yellow color at the base of cutting July 29, 2018 at 1:12 pm #278 AnonymousInactive not really. Only about 10% organic and the rest mineral. Not sure about bone and blood meal. Perlite is a substitute for pumice but will float when watered.