Armando, are both your rootstock and scion from dormant cuttings? In my case, I started with dormant cuttings for both scion and rootstock and let the Florea (rootstock) cutting get to the verge of rooting before grafting on the bud from a CdDN cutting that came straight out of the 'fridge. It seems like there are a lot of factors to play with (lignified vs. green wood, type of graft, semi-dormant vs actively growing etc). What I hope to test is whether a CdDN on Florea behaves differently than an ungrafted CdDN in terms of ripening time and cold hardiness. I'll grow the two side-by-side and see what happens. Another reason for doing this would be to put multiple varieties (like three different CdDs) onto one rootstock and fit more varieties into a small space.