no issue with rooting this season. Calvert and Ischia White were fastest. Kathleen's Black and VdB were also relatively fast.
Ischia Green wasn't so bad, but not as fast as others.
Col de Dame Blanche was good rooter also. However, it's also growing the top slowly. leaves are coming out fine, but the branch is short and not extending.
Black Madeira rooted fast also, however, it's just not moving fast enough. it will put out roots.. then sit for awhile just taking it's time before new roots will come out. same with top. it will put out leaves, but it won't grow as fast as others.
Ronde dB.. now.. this thing grows like a weed, both hard and green cutting. putting out roots in less then 1.5 weeks.
pete