Headway G Fungicide is labeled for treatment of red thread. You would use 2-2.5 lbs. per 1000 sq. ft. at 14 day intervals or 3.5-4 lbs. at 28 day intervals, and you should apply when conditions for the disease are favorable. Headway G Granules can be used as a preventative treatment and as a curative treatment since it has two active ingredients. One of the active ingredients in Headway G is Azoxystrobin, which is the same active ingredient in Heritage G granules. If you would like to rotate fungicides, you should look for one with a different active ingredient. Honor Guard PPZ Fungicide is also labeled for red thread and can be shipped to New York. Honor Guard is best applied as a preventative treatment. Be sure to follow the application instructions on the product label.