I'd like to ask- my grandfather did a lot of grafting, and I would
watch him. He used to dip the end of the part he was grafting into
some white powdery stuff he got at the nursery. This was in the early
1960's. He told me what it was, but of course, I can't remember. He
used this white powder to graft roses, and made beautiful varigated
carnations with the same method. Anyone have any idea what the
substance was?

Thanks,

Karen