"I don't think that map is totally accurate, but as you can see, the Caprock is clearly in the short-grass region".
All the CRP pastures are required to be planted to NATIVE grasses , and up on the Caprock, they are ALL tall grass.Some are over head high.
But....no big deal.
Curdog, I'm no geologist nor am I a Botanist, but I think "Tallgrass" simply refers to the height of the grass, mainly due to there being much less rainfall out west. The main grasses, Big and Little Bluestem, Indian Grass, Buffalo Grass...are probably the same, just taller here east of...Wichita, where there is more rainfall.
