Hi, I garden with wildflowers in Australia. I don't know if this thread is intended for US wildflowers, but I'm willing to post pictures of some in my garden. There are quite a few in the garden that are very rare in the wild, and even one that is now considered extinct in the wild (Homoranthus croftianus). Some of them were named and described by my husband, who is a botanist.
I keep my garden divided aproximately into three zones. Around the house I have a mixture of native and exotic plants, including useful food plants. The areas that are a little further away but still have mowed grass have mainly native wildflowers since they don't need watering, but these can be from as far away as Western Australia. The rest of the property is a listed threatened ecological community, and is called Yellow Box/Red Gum grassy woodland. These are species of Eucalyptus that commonly grow together and have a characteristic mainly herbaceous understorey. In this area we do not plant any introduced plants from other areas, let alone exotics, and we manage the weeds as best we can by hand pulling and spraying where necessary. There are many beautiful wildflowers in here too. We don't mow the grass there so we can allow the more delicate forbs to survive and the grasses to self seed. We moniter the progress of the understorey plants towards recovery from its original grazing history with permanent plots. The species richness and diversity is gradually improving.
If anyone would like to see some of our wildflowers, I have plenty of photos.