I have several immature rose bushes, including some native Washington roses, that must be removed from my property. Are there any organizations, or individuals, who would be interested in transplanting them to another site?
You might want to check out the Seattle Rose Society website, which has lots of good information about roses.
You could also post your information about the roses, or reply to those seeking rose bushes, on the Pacific Northwest Garden Exchange on Houzz.
Another place that might have an interest in helping to find a new home for your roses is the adopt-a-plant list on the website of Plant Amnesty.