World of Wild Flowers is a package with 75 photo-realistic flower props. It comes in 5 different styles, and they range from single flowers to large patches that can be placed on fields.
The textures are in high resolution considering the prop size, but is still quite economical. The poly count is also reasonably low, so you can place quite a lot of them into a scene with no problems.
All the textures are photo sourced, and also come in an obj version.
The package is made in Poser format, and comes with material files for the Daz version.
Software: Poser 6, Poser 7+, Daz Studio 3, Daz Studio 4
Requirements: Any program that can load .obj files and textures