kasta: Doesn't look like disease. Looks like some kind of stress. Were your plants recently move from a shady area to full sun? Has it been unusually hot? Did it lack water for a period? Maybe thinking in these terms can lead you to the cause.

The Fruitnut

It could be scorch. Some of our shrubs are showing this symptom, as well. This happens when there are many successive days of high heat and full sun. I think that the vascular system including the roots are simply not able to supply enough water to the leaves, and the leaves begin to die back in places. If the shrub has been kept watered, the only solution that I am aware of is to erect a sunshade of some sort, until the weather turns cloudy.

I did some internet searching on "blueberry scorch" disease. It is caused by a virus, and is spread by aphids. There is no treatment, affected plants are removed from the bed, and replaced with virus-free stock. If a blueberry shrub is infected, the flowers will turn brown and die, around the time of bloom. We have some blueberry shrubs, that have healthy looking fruit, and with a few leaves that are turning brown. I am not certain that they are infected with this virus, it could be stress from too much sun and heat during the past two weeks. If they are infected, it will likely be obvious next spring, when the shrubs flower.

It's scorch as in sun scorch. Not a disease, but environmental.

The blueberry scorch disease from a virus looks *very* different.

Thanks for the info everyone. The plant is in shade until about 11:00 am and then full sun the rest of the day. We had an exceptionally cool and rainy June (temps around 70 and almost 5" of rain) up until 1 week ago. Since then it has been sunny with temps in the 80s. I will increase the water & shade and see if that helps.

Thanks again.