Experts and BHG readers answer.
viburnum opulus roseum and thuya occidentalis - pro or con for near foundation?
Neither Viburnum nor Thuja have particularly invasive roots, so they are fine for planting near a foundation. It is advisable to give them enough space to reach their full size without having the branches rub against the house, however. The viburnum can reach a spread of 12 to 14 feet, so it should be planted about half that distance from the house. Thuja occidentalis has many cultivars, so it depends on which one you have as to how large it will grow.