USE YOUR OWN FOLIAGE TEXTURES
For the plants in the scene you can create your own textures from scratch using photos taken on the location. shoot as many different samples as you can: leaves, bark, flower petals. another way is to gather leaves and scan them, but you probably will not be able to scan the bark of a tree. For both methods you need to edit the images in Photoshop before you can use it in 3ds max. create diffuse texture, cropping your photos if necessary. use the transform tool to align lines and shapes. after that, make textures for reflection, bump and opacity. you will get unique textures for your close-ups renders.