I live in a zone 5 and I love boxwoods. I have been able to keep 1 alive by putting burlap around it for 2 years. However, I would like a taller boxwood in a raised flower bed (part of my front yard landscaping) and was told by my local garden centre that it's not possible in a flower bed. I was wondering if this was absolutely true or if there is something I can do to help it survive our winters (sometimes up to -25 Celsius). Thank you!
Unfortunately, unless you intend to keep it in container, and bring it in for the winter, this will be almost impossible.
As you have already probably seen, it can be a bit of a task to keep something alive that it right on the edge of where it can survive. Adding another element against you will result in a quicker death than the previous attempt.
You may want to find another similar shrub to replace it with. This article will offer options that are fully hardy in your area: https://www.gardeningknowhow.com/garden-how-to/gardening-by-zone/zone-4/zone-4-evergreen-shrubs.htm
Hello there. I just came back after being gone 6 months. My boxwoods have several brown and yellow leaves on them. I do not want to lose all these pants. Last night I put Ironite all around them, an watered it in. Is there anything else I can do? Thanks so much, Bev
These articles will help you diagnose your shrubs.
https://www.gardeningknowhow.com/ornamental/shrubs/boxwood/trimming-boxwood-bushes.htm
https://www.gardeningknowhow.com/ornamental/shrubs/boxwood/yellow-or-brown-boxwoods.htm
We want to trim it away, is it OK to do it now?
Yes, but you must also treat the underlying problem, or you may lose the shrub with just pruning alone.
This article will help you to correct the issue: https://www.gardeningknowhow.com/ornamental/shrubs/boxwood/yellow-or-brown-boxwoods.htm
What happens to Boxwoods and Arborvitaes if they don't get what is considered full sun? (At least 6 hours each day?)
They can survive, but they will grow at a snails pace, and can become leggy in stature. It, really, isn't the worst thing for a full sun plant, but they do prefer full sun.
We have 4 large leggy boxwoods that have been ignored for the last 3 years. They may have some blight, or simply be under fertilized.
You can trim at any time unless it is late Autumn. It will be too cold to recover.
You will also want to correct the issue before pruning. Doing a heavy prune on top of an issue will almost be guaranteed to cause its death.
If you can include photos, this will help me to see what is going on so that I can recommend the best solution.
In the meantime, this article will give you more information on when to prune these: https://www.gardeningknowhow.com/ornamental/shrubs/boxwood/trimming-boxwood-bushes.htm
Is permethrin an effective agent against spider mites on boxwoods?
No. Permethrin is not appropriate for spider mite control. For chemical control you would need a different class of pesticide, with properties called acaricide or miticide.
This article on boxwood spider mites offers some suggestions or biological control. And it also has a link to information on miticides.
https://www.gardeningknowhow.com/ornamental/shrubs/boxwood/boxwood-spider-mites.htm
I have a box hedge Buxus sempervirens to the front of my house and this was only planted about 12months ago - new build. The leaves are turning a yellow/brown colour with a white tip at the end. Has anyone any advice on what could be the cause?
It is possible that they have received too much water, and have contracted a fungal infection.
It is best to Make sure that you apply a handful of dolomitic lime and a teaspoon of wettable sulfur to each shrub. These will help kill the infection.
This article will help you to use spray fungicides as well, which may also be necessary: https://www.gardeningknowhow.com/garden-how-to/info/using-fungicides-in-garden.htm