Roses can be pruned in fall or spring—fall helps with shaping, while spring pruning supports fresh growth. In cold zones, stick to light fall pruning to avoid frost damage; in mild zones, heavier cuts ... Yahoo: These 4 simple steps for pruning a snowball bush viburnum can give you the best blooms, plus we reveal the pitfall to avoid that will ruin any display These 4 simple steps for pruning a snowball bush viburnum can give you the best blooms, plus we reveal the pitfall to avoid that will ruin any display