Will these grow from cuttings?
Nova,
I got my first yellow twig dogwood from John free with one of my orders from him. I believe this is pretty much a color variation of ROD. With John's guidance, I successfully rooted them with no problem. I'm not using them at the farm, but my wife likes them as landscape plants around the house. I started my first set in RM18 but found the buds are so far apart that it is easy to bump the tops and tear delicate roots when they are first starting. Each year, I've taken cuttings from them and planted more around the house. Here is what works best for me:
1) Make sure the cutting has 2 buds above and 2 below the medium.
2) I use rooting hormone #3 on them. I cut them at an angle just below the lower two buds and dip that end in the hormone powder.
3) I put them in 5" root trapper bags. Since there is no tap root to prune, these work well for cuttings. I use promix as a medium. I keep them watered and in a cold room with no artificial light for a month or so. For the first couple weeks, I'll place the bags on heating pads (set on low) to warm the soil. This helps encourage roots to begin without letting them break dormancy. After a couple weeks I turn off the heating pads.
4) Next, I bring them indoors, warm them up and put them under artificial lights. (I'll be taking this step soon with mine). Before long they will break dormancy and begin actively growing. I will acclimate them to natural light in the spring like any other tree after our last threat of frost passes. I then plant them from the 5" bags.
This has worked very well for me. Once mine break dormancy, I'll start posting some pictures. I'm learning that the key with most dormant cuttings is getting root growth to begin before the scion breaks dormancy and drains the scion of energy leafing out. Warming the soil without warming the air temperature keeps them dormant while letting some root development begin.
Thanks,
Jack