Hi everyone! I thought I’d hijack one old topic about budding, but as making a new topic is easy and cheap, I went ahead 
This spring, before the leaves started to push out, I tried my luck in chip budding various white mulberry varieties, as well as a Juglans regia on a J. ailanthifolia rootstock. I ordered the material from abroad during the winter, and kept them in cold storage, and did not use any shriveled up scions.
I used the sharpest knife possible, and tied up the buds with grafting tape. I am a gardener professional, but not a nurseryman specifically (at least not yet), so the terminology and basic biology of a plant is familiar…yet from at least 30 buds maybe three have taken, and even them have not yet pushed up leaves (that might be the apical dominance issue). Not one of the walnuts took.
So I was hoping to get from you the best possible tips specifically for walnut and mulberry budding, and possibly other grafts also, what might work? And did I do it too early/too late? I kept the plants in a half shaded place until the rootstock had fully mature leaves. We have had really hot may here in Finland, but the tape kept the moisture well.
If only one survives from my three, I am overjoyed…but I am afraid next winter I’ll be ordering again scions around the globe 
Sincerely,
Janne
I’m not an expert. I can’t help you with budding. I can say fresh scion is everything. From what I understand don’t you usually take buds from green scion? If you have dormant scion, I thought your only option was to graft the scion? I had dormant mulberry scion, also bought some rootstocks and used whip grafting and they easily took, or at least at this point appear to have taken (green buds appearing). On nut trees I heard they are hard to graft, good luck! Yes rootstock needs to be growing. Hopefully others will chime in and get you going.
I used dormant wood (your White Gold cherry was one) for chip budding cherry and Mirabelle this spring, and some took and are growing branches nicely.
In both species, I did it on trees with leaves fully out and temps above 67-70. I covered the buds with paradigm M. I didn’t do buds on mulberry or nuts, tho.
@Janne.L I did the kind of chip bud where you place the bud a bit diagonally to ensure cambium contact.