already have cuttings with roots. If I plant now what can I do to help them survive winter in R.I. Should I put in ground or pots?
You should keep them in pots with very little nutrients until they root. I recommend mixing a small amount of honey and an aspirin tab in some water and watering with that. It will help promote rooting. Keep them moist but not wet, or dry. Keeping them covered with plastic can help keep in moisture. Transplant when rooted, or after when it is time. Here is an article that will help: https://www.gardeningknowhow.com/ornamental/shrubs/hydrangea/hydrangea-propagation.htm