Answer: The viburnum (Viburnum opulus 'Sterile') will grow to be quite large, in the range of 12 feet tall and wide. The hydrangea (Hydrangea arborescens "Annabelle") will be about three to four feet tall and wide and will need to be cut back to the ground every spring before it begins to grow for the season. Both will do best in all morning sun with soil that is acidic, humusy, and evenly moist yet well drained. The hydrangea will also do well in bright dappled light all day. Enjoy your shrubs!
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