Questions

I have rosemary growing in a big pot plant but its starting to go brown and look like its dieing off,how can i fix this?

I have dug two flower beds in my front lawn and im wondering what would be the best low maintanence flowers that give some colour both in summer and winter to plant, i have dug the flower beds this week and mixed some compost through the soil,but still need to raise the beds a bit,and im wondering what to plant?