No, its not too late. You can pretty much transplant an azalea any time. Summer, in my opinion is the worst time, however.

If the ground isn't frozen, it is not too late. Cold weather is good because the plant is dormant. Warm weather adds more moisture demands which is the main problem when transplanting. Be sure to mulch and water about once per month if it doesn't rain or snow and the ground isn't frozen. Don't put the mulch against the trunk to prevent rodents from girdling the trunk.

Thank you StevieD and rhodyman! We transplanted two azaleas today, thanks to your advice. Is it OK to water them after transplanting them when temperatures are freezing during night? Can this water in soil freeze if it is too cold???
Thanks again for your help.
Dragana

I have always been told that watering just prior to a freeze is good, because the frozen water forms an insulating coating which keeps the encased stem or root form getting below freezing and suffering worse from the colder below freezing air temps.

In a way that sounds reasonable to me, but I also wonder how good of a rule of thumb that suggestion presents.

After all, doesn't ice even vary in below freezing temps. Is it just a thicker and more denser ice, during zero F. degrees or below freezes, where the ice still stays at a constant 32F. degrees; or am I wrong?

Don't water when the ground is frozen or when it is just about to freeze. However, if the ground is not frozen, water in the early AM so that it can soak in before it freezes. Make sure you have a good mulch layer so that once it freezes it doesn't thaw out.

Ice freezes at 32F but once it is frozen will get as cold as the air around it. It can get as cold as anything else. When it freezes it expands causing damage and heaving. That is why it is best not to have things soaking wet when they freeze. It is not an insulator, in fact it can conduct heat and cold much better than mulch or drained soil.

Thanks, those instructions and explainations seem reasonable.

I too have some Azalea's that need transplanting, it's April 14th and I'm in north Florida. Can I transplant now?