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.

John S
PDX OR