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- Q.What To Do About Rhododendron Die Back - What I thought was winter damage appears to be more than that. Leaves from top of plant down lost their ...
- Q.Keeping A Rhody In A Container - We are in the process of down-sizing to a smaller condo where I will not have a private yard/garden space. ...
- Q.Sickly Rhododendrons - Why does my rhododendron look sickly? Yellow leaves and sparse growth?
- Q.Rhododendron And Azalea Disease - My rhododendron and azaleas seem to have a disease. On the branches there are little white dots. If you press ...
- Q.Pruning Back A Large Rhododendron - (Virginia) We have a large rhododendron which has a number of sizable, vertical branches that are leafless below 4 to ...
- Q.Wind Resistant Plants - I need plants resistant to wind (area with air coming from the side of the building). Are rhododendrons resistant? I ...
- Q.Black Soot On Rhododendrons - My beautiful, healthy, prolific 22-year-old rhododendrons, in the past month or two, suddenly developed this thick black soot on the ...
Asked by
iy on
May 15, 2011Q.What to Do About Rhododendron Die Back
What I thought was winter damage appears to be more than that. Leaves from top of plant down lost their color and dry up and fall off.
Answered by
Heather on
May 15, 2011
Certified ExpertA.Without knowing exactly how the disease looks on the leaves, it would be hard for me to diagnose it. This article may be helpful though in helping you match what is causing the plant's problems: http://www.ppath.cas.psu.edu/EXTENSION/PLANT_DISEASE/pdf%20Flowers/Azalea_RhododendronDiseases.pdf
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- Asked by
Anonymous on
May 17, 2011Q.Keeping a Rhody in a Container
We are in the process of down-sizing to a smaller condo where I will not have a private yard/garden space. I have a small Nova Zembla rhody that I'd love to take with me. If I plant this rhody in a large container to keep outside on the patio of our new home and prune most of the new growth after it blooms, can I keep the plant compact enough to live in the container forever, or will I just end up killing it?
- Answered by
Nikki on
May 18, 2011
Certified ExpertA.As long as you provide enough water and nutrients, it should do fine. I would not prune only new growth, but rather selectively remove some older growth each year. This will keep the plant from getting too scraggly.
Was this answer useful?00 - Asked by
andy on
May 19, 2011Q.Sickly Rhododendrons
Why does my rhododendron look sickly? Yellow leaves and sparse growth?
- Answered by
Heather on
May 22, 2011
Certified ExpertA.It sounds like it may be a nutrient issue. I would give the plant balanced fertilizer.
Was this answer useful?00 - Asked by
Anonymous on
May 23, 2011Q.Rhododendron and Azalea Disease
My rhododendron and azaleas seem to have a disease. On the branches there are little white dots. If you press on them, they bleed red. It started on the rhody first and now is on my azaleas. It looks like my azaleas are dying. Any help would be greatly appreciated.
- Answered by
Nikki on
May 23, 2011
Certified ExpertA.It could be mealy worms, but there are several it could be. All of them can be treated with neem oil. These articles will help:
https://www.gardeningknowhow.com/plant-problems/pests/mealybugs-white-residue-on-plants-leaves.htm
https://www.gardeningknowhow.com/plant-problems/pests/pesticides/neem-oil-uses.htmWas this answer useful?00 - Asked by
Anonymous on
May 24, 2011Q.Pruning Back a Large Rhododendron
(Virginia) We have a large rhododendron which has a number of sizable, vertical branches that are leafless below 4 to 5 feet; above this there is lots of foliage, which has just finished blooming. There is some new growth pushing up from the bottom of the plant. If I cut the main branches back to 12-15 inches, should the plant survive the shock of being cut back?
- Answered by
Nikki on
May 25, 2011
Certified ExpertA.You should be ok cutting back by 12-15". The general rule of thumb is not to cut back by more than 1/3 in one season.
Was this answer useful?00 - Asked by
cleiton1 on
May 27, 2011Q.Wind Resistant Plants
I need plants resistant to wind (area with air coming from the side of the building). Are rhododendrons resistant? I tried pine tree and it started to die.
- Answered by
Heather on
June 3, 2011
Certified ExpertA.Rhododendrons are not really wind resistant. They are use to being near trees, which act as windbreaks. This article has some suggestions for wind resistant plants:
https://www.gardeningknowhow.com/special/spaces/wind-resistant-plants-for-your-windy-garden.htmWas this answer useful?00 - Asked by
Anonymous on
May 28, 2011Q.Black Soot on Rhododendrons
My beautiful, healthy, prolific 22-year-old rhododendrons, in the past month or two, suddenly developed this thick black soot on the branches. The leaves turned brown and fell off and the buds never developed into flowers. It may be too late to save one of them, but this blight seems to be spreading to all of my rhododendrons. Any idea of what this is and how I can get rid of it?
- Answered by
Nikki on
May 29, 2011
Certified ExpertA.This is sooty mold, usually an indication of pests like aphids. Treat the shrubs with neem oil, which will take care of both the sooty mold and whatever pest may be affecting them. Here is more information:
https://www.gardeningknowhow.com/plant-problems/disease/how-to-get-rid-of-sooty-mold.htm
https://www.gardeningknowhow.com/plant-problems/pests/pesticides/neem-oil-uses.htmWas this answer useful?00
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