Recommendations about sharing raspberry plants from one garden to another vary, according to who is talking.
Educational sites suggest you always start with clean, certified plants obtained in spring. "Purchase dormant, certified plants at a garden store or nursery. Sucker plants dug from an established planting during the winter when plants are dormant often have virus diseases that can survive during transplanting." is the advice from this publication: https://s3.wp.wsu.edu/uploads/sites/2076/2017/06/C116-Raspberries-16.pdf.
I realize this will be disappointing to both you and your friend but, far too often, Master Gardener Offices hear about shared plants that decline due to disease that wasn’t obvious beforehand. And, because some diseases are soilborne, the new planting area can be permanently contaminated. It's not possible to wash the disease organisms off the roots.
If you do share your transplants, it's best to do so before they have any new growth.
You’ll find reliable planting information and more in “Growing Raspberries in Your Home Garden" - https://catalog.extension.oregonstate.edu/sites/catalog/files/project/pdf/ec1306.pdf
thank you. No matter where the plants come from, I will do more research into the climate of the valley and Eastern OR. since I just wanted to know when 'spring' usually arrives east of the mountains.
These plants are very special to me. The original plants were planted by my grandmother over 50 years ago, survived moving to 4 residences, and putting up with my early lack of knowledge and care.