Lin, my Seet Viburnum is in the ground, it is taller than me, though it doesn't get watered much and our rainfall isn't high, and I've never fertilised it but it is on the line of an old no longer used septic tank trench, so the soils is more fertile there.
Ann, I have till now never pruned mine, because I wanted to let it grow big as a screen from the road in front of our house. That was originally why I chose it, since it is fast growing, dense and evergreen. Since it's part of a shrub border, I intended to prune it when it got close to touching the other shrubs there. Thanks for the pruning info!
In terms of hardiness, it seems ok here at 8a, but I think it suffers a little in winter as it gets some funny looking buckled foliage after winter, with whitish streaks. Unless it's sporting an unattractive variegation. It seems to stop doing this as the weather warms up. It is more tolerant of winter than my sweet Osmanthus, which grows really puckered ugly foliage in the winter.
