You have the perfect tropical scene, or jungle, greenhouse or even room setting. But you need something to add a bit of exotic beauty in the background that won't break your poly count! 

This set of 15 Low poly ( perfect for background and mid to far distance use as well as instancing!) Wild Dendrobium Orchid plants will do the job perfectly, whether its in a plant pot on a surface away from the camera (the rootless ones are great for this (though you could have the roots trailing down the sides of the pots too!) or growing along branches or tree trunks as they do in the wild.

The airy arching sprays of flowers look wonderful at a distance and add that tropical feel to your background scenery! 

As always a little goes a long way and one plant and its instances can look like many with slight variations in scale and the y rotation values - also remember that many of the plants in this bundle come with areal roots or low hanging flower stems which will bisect the ground plane when loaded, to use simply place in an elevated position such as a plant pot or growing out of a rock face or tree trunk or sitting on a branch. Note that these are (reasonably) low resolution models which look great at a distance but are not suited for close up or detail images and are intended to be used en mass as a filler in mid to far distance.