Ornamental Grasses

In general, how and where do you grow black and blue grass? I had black grass in my last garden and forgot to dig it up and bring it.. I would like to grow that again and also maybe that lovely blue grass as well. What does it like?

 

The black grass would be Ophiopogon planiscapus Nigrescens? It's not really a grass, more an asparagus relative IME, it will grow anywhere, even in claggy clay.
The blue one would be Festuca glauca perhaps? A dry, sunny spot in light soil is the ideal for that.

 

Awesome, thanks everybody!