I Have Ornamental Grasses Around My Patio That Are Damaged By Snow Fall.

Question

I wind up with rot and I lose half the plant

Answer 1

Unfortunately, your photos did not come through. I am unable to see the damage. Be sure that your grasses are rated for your USDA zone, first and foremost. If you know that they are within zone, then you may need to consider using fungicides in a preventative manner during this time.

https://www.gardeningknowhow.com/garden-how-to/info/using-fungicides-in-garden.htm