Mariesii viburnum not blooming or blooming very little #565817

Asked May 30, 2019, 2:54 PM EDT

We have some mariesii viburnum installed in 2015 and they have been very disappointing. Growing just fine, but not flowering. There is a stretch of woods behind them so I don't think it's fertilizer runoff and excess nitrogen. They are on the north side of our property, but basically face south. Any suggestions would be appreciated

Wayne County Michigan

Expert Response

I am wondering if you have pruned this shrub at all? Pruning at any time except right after bloom will remove the buds for the following year’s blooms. If you are sure it is not excess nitrogen and the shrubs are growing fine then it would seem to be a pruning issue or not enough sun. Six to eight hours of sun is what you are looking for. Hope this helps!
An Ask Extension Expert Replied May 30, 2019, 8:46 PM EDT
I really don't remember pruning it at all.  Maybe it's the sun.  Don't think I get 6-8.  Will fertilizing help?  What formula?  How can I test for nitrogen in the soil?

The Question Asker Replied May 30, 2019, 9:00 PM EDT
If the shrub is growing well then fertilizer should not be needed. Nitrogen moves through the soil, it is not tested in the MSU soil test. If your shrubs are growing good foliage then nitrogen could come from turf fertilizing. Nitrogen encourages lush foliage growth. Other than that, I suspect it may be the need for full sun.
An Ask Extension Expert Replied May 30, 2019, 9:10 PM EDT
They are not really near any fertilized areas, but my guess is the sun as well.  

Thanks for the help
The Question Asker Replied May 30, 2019, 9:15 PM EDT

Loading ...