Wholesale Viburnum can be bought in two main varieties - Opulus and Tinus. Opulus us the large head variety that has a resemblance to snowballs. These are sold in bunches of 10 stems at a time and generall have a stem lengh around 75cm. This variety is available for most of the year but can be a little difficult to source in the warmest summer months. Tinus is very different to Opulus as the flower heads are very small and many tiny flowers are on each stem. These are also sold in bunches of 10 stems but are much harder to source and only available for a short time over winter..