US National Arboretum


Azalea Questions and Answers

picture of path through the azalea collection
I planted a new azalea and it died. What did I do wrong?

Can you tell me how to plant an azalea?

An old, established azalea died in my garden. What might have caused its death?

What should I use to mulch my azaleas? Should I amend the soil at the time of planting?

How and when should I prune my azaleas?

What is the difference between a rhododendron and an azalea?

When should I fertilize my azaleas? What fertilizer should I use?

Why isn't my azalea blooming?

My azaleas always turn yellow or purple in winter. What's wrong?

My azalea foliage looks white, and there are black bugs underneath the leaves. How can I get rid of them?

All the leaves on my azaleas are notched, and they are growing poorly. I don't see any insect or pest causing this damage. What's going on?

My azalea flowers never last more than a few days in spring. Then they cling to the plants and turn brown. Why?

Can I transplant a large azalea? If so, how should I do this?

I'd like to see the azaleas in full bloom. When should I come to the U.S. National Arboretum?

Where can I find more information about azaleas?

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Last Updated April 20, 2009
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