Any watering issues? Any underground pests in your area? Can you check for azalea bark split?

Thank you for your reply. They weren't watered all winter but we had snow and rain, the rest of the healthy ones in that area weren't watered as well, not sure if that matters though. About the pests, do you mean moles or grubs? I haven't seen either of those ever in the yard. I just looked at some pics of bark split and that doesn't look like the problem. I am somewhat hopeful because there is green under the bark but then again, could it be dying a slow death...leaves dying first then stems? Thanks again!

When testing the soil for moisture, always check areas near the root ball because once the root ball begins to dry out, it becomes difficult for it to absorb water. In cases where the root ball area actually begins to repel water, you may need drastic measures such as extracting the plant and dumping the root ball in water for about an hours or so; or you can turn on the water to drip on top of the root ball for about an hour as well. Extracting the plant also allows you to check if the plants' roots are rootbound.

Yes, I was wondering about underground pests. Some pests dig underground and can damage the tiny roots. Moles burrow around, for example, and damage the roots.

Do you know if water poodles form around the unhealthy shrubs when it rains. I am wondering if they could have developed root rot.

Can you look under the dried out leaves for signs of insect damage?

I take it that this shrub stays evergreen and that is why you are now concerned? Do you know the name of this variety? Just wondering...

Can you post any pictures? A picture that shows the area where the affected shrubs are would be good. A close up of one of the shrubs that is partly alive would also be nice so we can tell how the leaves dry out. And pictures of the top/bottom of affected leaves.

Luis