Each year I watch people stop along old roadways or in pastures and dig up Indian paintbrush. Please, please do NOT dig it up. I can almost guarantee that you cannot transplant it to your property. Many people do not realize that Indian paintbrush is a hemiparasite and always grows near a “host” plant. It sends out special roots to steal nutrients from other plants such as Oxeye daisy, little bluestem grass, buffalo grass, or blue bonnets. If you dig it up it will die before it can find another host.
You can buy seeds and start them with host plants. Or you can buy plants from a nursery, but make sure they include a host plant. High Country Gardens sends fringed sage with theirs.