Brown leaf tips on Siberian Iris
In an effort to expand my garden vocabulary, I planted my first Siberian Irises this spring and they did very well except for the brown leaf tips. It doesn't look like disease so much as maybe a culture issue. At least one of them is in a consistantly damp area; the others are not but all have the brown tips. They get about 6 hours of full sun. I haven't tested the soil but they front some hollies that get an annual dressing of HollyTone so I'm guessing it's slighty acidic. I'd appreciate any ideas or suggestions. Thanks.