I have a Rhododendron ‘Fantastica’ which produces very pretty flowers. It is not a big plant, but it now has one branch that doesn't have flower buds on and can be used as a cutting. I probably will try to root it just to see what happens
.
The Abutilon cuttings have all survived. I have started to see their white roots through the clear cups
. The Viburnum cuttings are not doing well. Quite a few of them have dropped all the leaves
. We will see if at least a few of them can make it.
Sally, tropical milkweed seedlings should do fine staying in the ground over winter. You may want to label them so that you know where they are next spring.