For years, I've been trying to clone my late grandfather's northern highbush blueberries (pair of unknown varieties). He planted the bushes back in the 1970s. They are at least 7 feet high (after pruning). One bush is sweet; the other is sour.
Past attempts have failed: the cuttings placed in a mix of peat & perlite inside a plastic bin would eventually mold over.
I spoke to a woman at a local farmers market. She says she has successfully rooted bloobs by taking cuttings; peeling back a leaf (or scraping down to cambium with a knife); cutting it back to a few buds; and sticking the piece down into an open bin of SAND. She says sand is the key.
Presently, I am trying to replicate her success. The only difference: I am using hardwood cuttings taken this past late winter/early spring instead of the softwood cuttings she takes in May/June. My cuttings were taken sometime around March. Last week, I scraped them with a knife, and set them in the sand. This time, it looks like they have a fighting chance.
Here is "Orville Sweet:"
Here is "Orville Sour:"