Cindy from Fort Collins, Co writes
The Bayer Advanced Fungus Control for Lawns is not labeled for Necrotic Ring Spot. When treating Necrotic Ring Spot grass fungus you should first dethatch the lawn vigorously. The thatch is how the fungus spreads. Then you can use a product like the Eagle 20EW which is labeled for this fungus, but it will not help without dethatching regularly.
Answer last updated on: 07/30/2013