Grasses Advice

In Kansas they have very tall grasses (clump type) that they refer to as Indian Grass that were around 8-10 feet tall, is this available?
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We do have Indiangrass available. It may not quite reach 10 feet tall, but once established they should regularly grow to at least 6-7 feet. 

I would like to plant a variety of grasses in clumps for ornamental/edging purposes. What species would you suggest I order for zone 4 or 5 with this purpose?
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Some of the more popular native grasses for ornamental uses are Prairie Dropseed, Sideoats Grama, Little Bluestem, and Blue Grama. These grasses will all have heights of 3 feet tall or less. If you would like taller grasses, Big Bluestem and Indiangrass are very attractive in ornamental seetings as well.