I'm starting to notice a pattern here. At first, I didn't refrigerate my persimmon scions for whip and tongue grafting. Success rate: 0%.
Then I refrigerated them. Success rate: 100%.
This year, I forgot to refrigerate them. Success rate: 0 %.
Are you noticing a pattern here? I hope I remember to refrigerate them next year.
I think it is more important to refrigerate them because they are grafted so late.
They have more chances to get old and dried out.