Yeah, the whites from the leaves. Basicly, whatever reflects the most amount of IR will appear white. For film, you need special IR sensitive film, which is normally B&W. So you will not get the psudo colours that my shots have. Also, I am shooting using a Hoya R72. It blocks off all light below 720nm wavelength. Your eye can see up to 780nm. So the R72 still lets in some visible light and light in the near IR spectrum.
You can check if you cam is sensitive to IR by pointing a remote at it and pressing buttons on the remote. If you can see the light, means your camera is IR sensitive.
What I am shooting is near Infra Red, not far Infra Red. Far Infra Red is the thermal detection stuff, normal CCD cannot detect it. I am just shooting something that is normally not visible to the human eye, but can be detected by my cameras CCD. Post in the IR forum, the people there are quite helpful & might provide better answers then me.