I talked to one of the scientists in the Extension plant diagnostic lab and he told me that when trees are fertilized in a ring that coincides with their feeder roots, which is generally the recommendation for fertilizing trees, the grass will often decline within a year or so as a reaction to the heavy application of fertilizer. Its the only situation where he has seen a ring appear like the one I described. Due to the stress on the grass, fungal diseases will often show up as well in that ring. I am taking a sample of grass in this week for diagnosis and recommended treatment. Jeannine Kantz jkantz@tca.net ************************************* Yesterday is the past, Tomorrow is the future, Today is a gift, That's why we call it the present. *************************************