I also have some viburnum plants turning yellow from green and appear to be dying. Are the black spots a disease and what should I do? How can I stop viburnums from dying?
Yellowing leaves can be an indication of disease or pests along with the black spots you mention.
The black spots could certainly be a disease called Anthracnose Fungus. Anthracnose Fungus is not usually treated with chemicals but will proper care can be corrected.
If pests of other indications of disease are present, Neem Oil is a good treatment.
Inspect the plants carefully for any other indicators of the problem.
Check watering and remove any dead or diseased branches and dispose of.
https://www.gardeningknowhow.com/plant-problems/disease/anthracnose-disease.htm
https://www.gardeningknowhow.com/plant-problems/environmental/plant-leaves-turn-yellow.htm
https://www.gardeningknowhow.com/plant-problems/pests/pesticides/neem-oil-uses.htm
https://www.gardeningknowhow.com/ornamental/shrubs/viburnum/viburnum-shrub.htm
The article on a viburnum hedge shows a picture at the beginning with nice fall foliage but does not identify those viburnums. Does anyone know which ones they are? https://www.gardeningknowhow.com/ornamental/shrubs/viburnum/viburnum-hedge-spacing.htm The picture that I am referring to says "Image By Cranbrook Science". TIA, Luis
That's American Cranberry bush 'Wentworth'(Viburnum trilobum).
Hi there and thank you for the help. I have Viburnum around my pool enclosure and whenever I prune them. I come back later and notice there are holes on each twig i pruned back. Has to be bugs. Is it possible to tell what type of bug? Best way to rid them? I greatly appreciate the help! Andrew
Don't worry, the holes you are seeing are the way a cut branch naturally looks. The type of plant tissue that grows in the center of the branch breaks down quicker than the outer layers, which will naturally cause a hollow tube appearance after a few days.
Also, when pruning a branch, try to remove the branch entirely (cut it back to where it emerges from a larger branch or the trunk) or cut it back to just above a bud that you see emerging from the branch. That will improve the shrub's health and appearance over time. Cutting a branch halfway back as shown in the pictures is not so healthy.
I would like info on replacing Viburnum tinus damaged by beetles. Is it ok to remove the affected plant and replace it with a Photinia Red Robin?
These links will help you determine if Photinia is a good planting choice for you.
http://www.clemson.edu/extension/hgic/plants/landscape/shrubs/hgic1081.html
https://www.gardeningknowhow.com/ornamental/shrubs/photinia/growing-red-tip-photinia.htm
I would also encourage you to visit local garden centers and greenhouses for local availability.
You may want to check with your County Extension Office for a list of suitable shrubs that are good for your region.
Here is a link to help you locate your nearest office.
With the cold weather in December, will the laurustinus grow back? All of mine have turned brown.
It is difficult to predict whether a freeze-damaged plant will recover, but often, a plant will recover well even if it loses all its leaves.
The best option is to wait until spring or summer to see if the plant puts out new leaves and to avoid pruning until then. If leaves grow on only part of the plant, you can then prune back the dead portions.
You can also use this trick to see if it is dead:
https://www.gardeningknowhow.com/ornamental/trees/tgen/tree-scratch-test.htm
I have a Viburnum tree in my garden. It's getting out of shape. When do I prune it?
Late winter or early spring is a good time to prune your shrub.
https://www.gardeningknowhow.com/ornamental/shrubs/viburnum/viburnum-pruning.htm
Can I grow a viburnum carlesii in a tree stump planter with a diameter of about 2 feet?
Yes, this variety should work in a container.
Your size sounds appropriate.
This article will help you.
https://www.gardeningknowhow.com/ornamental/shrubs/viburnum/container-grown-viburnum.htm