My Viburnum mariesii was thriving for years, but now is not doing so well. Is in full sun and well drained soil. I feed once per year with pelleted chicken fertilizer. In last two years, the plant is not thriving and leaves are now predominently a reddish color.
How long does a Viburnum, Ninebark and Lilac flower?
These are all pretty much spring flowering species, although there is some variation among cultivars. To have the most successful planting outcome, you'll need to start by considering the light where you want to plant and the soil type, as well as what plants grow well in your area. Find plants that are well adapted to your growing zone. You can get such advice from the county extension service, as well as the local botanical garden. https://www.gardeningknowhow.com/garden-how-to/info/what-is-extension-service.htm
http://powellgardens.blogspot.com/2008/07/powell-gardens-spectacular-summer.html
Once you decide on what plants to use, spend some time learning about transplanting and preparing the site: https://www.gardeningknowhow.com/plant-problems/environmental/learn-how-to-avoid-and-repair-transplant-shock-in-plants.htm
Then all you have to do is google "where to buy...(whatever you've decided on)", purchase your plants, and you're on your way.
Lantana viburnum, can I cut back this plant two feet?
I would not prune off more than a third of its overall growth in any one given year. Here is more info on pruning viburnums: https://www.gardeningknowhow.com/ornamental/shrubs/viburnum/viburnum-pruning.htm
Recently planted a viburnum shrub which was growing quite well until now. I have noticed that a lot of the leaves have turned really dark brown. Could this be through lack of water or maybe too much watering? Could you please advise where we are going wrong?
It is likely too little water and a bit of transplant shock. Increase water for a few weeks and follow the directions in this article to help with the transplant shock:
https://www.gardeningknowhow.com/plant-problems/environmental/learn-how-to-avoid-and-repair-transplant-shock-in-plants.htm
I planted a viburnum in the summer and have just noticed that it is starting to go brown in patches. What can I do to save if from dying?
Thank you very much! You have been very helpful :)
The first thing is to try to figure out what's causing the brown spots - there are many possibilities. Examine the brown areas for damage to the branches. If nothing is broken, check for insects and/or sticky areas.
There could be tiny aphids or scale attached to the branches and underneath the leaves, or spider mites, which spin tiny webs on the leaves; you can see this if you spray some water on the leaves with a spray bottle. This article has info on these common pests (I know the article in about houseplants, but the bugs are the same inside or out:) https://www.gardeningknowhow.com/houseplants/hpgen/common-bugs-and-pests-on-houseplants.htm
If not bugs, consider the cultural requirements of the viburnum and how they are being met. Is it too wet? too dry? too much sun? too little? Also, since you planted it only last summer, perhaps there was a problem in transplanting. These articles will give you some things to consider: https://www.gardeningknowhow.com/ornamental/shrubs/viburnum/viburnum-shrub.htm
https://www.gardeningknowhow.com/plant-problems/environmental/learn-how-to-avoid-and-repair-transplant-shock-in-plants.htm
You can also get help and advice through your master gardeners assoc. This link will help you find the nearest group:
http://mastergardeners.org.uk/get-involved/find-your-nearest-master-gardener/
I've been agonizing over my Double File viburnums for years. They simply do not, and have never, looked the way they are supposed to look. I can send a photo or video of them. I trim them every year based on advice I've read online. I cannot seem to control the vertical branches from forming on the horizontal branches. It seems like every time I prune a vertical branch, it causes new verticals to grow from the pruned horizontal branch. My viburnums look like big messy shrubs. I am at my wits end with these bushes, but they are major elements in my landscape. I can't afford to have a landscape designer/horticulturalist look at them, so I really need your help. I believe sending you a photo or a video will give you more of an idea on the problem.
I will say that sometimes plants, like people, just don't react the way they are suppose to. It is ok to experiment as little (or a lot) to see if you can find a pruning technique that works for you. We will be happy to help you with that.
My viburnum opulus is being destroyed by small greenish coloured worms. They are definitely not a beetle. How can I eradicate them and save my tree? Thanks.
They can be treated with products containing Bacillus thuringiensis (Bt), a natural bacteria that kill worms without harming plants. Neem oil may be helpful as well. Here is more information: https://www.gardeningknowhow.com/plant-problems/pests/pesticides/using-bacillus-thuringiensis.htm
https://www.gardeningknowhow.com/problems/pests/neem-oil-uses.htm