"Adam Schwartz" wrote in message news:04IOa.11456$N7.1689@sccrnsc03...
My sunflower has developed brown blotches surrounded by black borders. What
is this? Is it detrimental to the health of my sunflower? How do I treat
it?

Thanks,
Adam

What shape are the blotches
What has the weather been
What fertilizers have been applied
What is your watering practice
Do the blotches cross leaf veins

Treatment is unlikely, prevention might be possible.