google REJUVENATION PRUNING OF FLOWERING SHRUBS ....

15 years.. is a long time to rely on tag descriptions..

basically .. you are suggesting that grandpa isnt looking like the young stud he once was ...

fortunately.. we can rejuvenate him ...

and this would start.. right after flowering ....

in the extreme... most viburnum.. in my experience [which is not great, and i would defer to the local pro, viburnum-man .. lol ..] .. could be cut to 6 inches to the ground ... and with no insult to the root system ... be back to 3 or 4 feet by fall .... but you would have to get really angry at it.. to go to that extreme ...

ken

Thanks for the reply. I am a very experienced gardener and do a lot of research before adding a plant to my garden. 15 years is not old for most shrubs and rejuvenation is not what this viburnum needs.

My question is for others who have Shasta viburnums ten or more years old. Has your Shasta maintained its highly touted horizontal branching habit? This shrub has been extremely popular the last 20 years or so, so I'm hoping others with experience can share.

Mine is about ten years old, and yes, it does still have a very noticable horizontal branching habit. It looks like it always has, just bigger.

Thanks for that info, mg. We'll see how this shrub looks when it stops blooming. Maybe the weight of the flowers is adding to the issue--tho I'm definitely not complaining about that.