Thank you to those that responded. I did not have any experience that would guide me to answer the question so I flagged it for attention. More questions along this line have come up and I have come to the conclusion with research that grafted or transplanted this family will only thrive in the soil and amount of overstory that the variety is adapted to. For example: "Relationships: There are about 450 species of Vaccinium worldwide, about 40 in North America with about 15 in the Pacific Northwest. The genus Vaccinium includes Blueberries, Huckleberries, Cranberries, Lingonberries, Whortleberries, Bilberries and Cowberries. Other Northwest Vacciniums will be discussed later under the sections on Deciduous Shrubs and Groundcovers." Almost all of the species not native will thrive in my climate but only with the soil and light exposure that matches there species. Most efforts to transplant Evergreen Huckleberry, Vaccinium ovatum that is so prolific here fail because there habitat is so specific that 100 feet from where they came they will die. Even more so "Where do red huckleberries grow?
It grows from southeast Alaska to central California, Oregon, and Washington, It occurs in the lower Cascades to the coast. Habitat: Red huckleberry grows on old decaying stumps or logs in moist coniferous woods, wetlands, or in the transition zone of wetlands. Basically you have to transplant a stump in order to transplant them. I know because I have tried.
So the question is Can you match the habitat the the berries were growing in in Montana? I have come to the conclusion for me: scattered blueberry and huckleberry patches in there niche but blueberry fields forever ? No.