Q.purple fountain grass in a large pot
I just planted my purple fountain grass in a large pot. The ends of the grass look dry and dead. Any ideas for me? They were planted a couple of weeks ago. Some of the grass looks brown and dead but the other half is still purple. I’m worried it will die. I live in central Utah.

Did the plant experience a cold spell after watering?
Did the pot receive adequate water?
Watering is most likely the issue for a newly planted pot.
You could try trimming back the part of the plant that appears dry.
If the roots are still alive, your Fountain grass should start to regrow.
Here is a link with more information.