The Wood Effect, whereby foliage shows up 'white' in infrared photographs, is a well-known feature of such images, often mistaken for snow.
Leaves are not the only things to exhibit this, as I found once when photographing young pine cones.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiiiIGqNDnJCPNRlv-xcAD2oQ5tMMARnHbYHAR3PZMPT061-OR9z2YqxYbXeaQyPji96ReNgQUDDxnuwUkrRoiN0DWS2XM-XztOpm6qKcv238KZ1_L_WNwabv50i5ptOSiF-BOQCLh0ENLrmcHJ54lH1SiD0FQaIS-WQbrMVl9giVcaZ5m38tGEMonhPg/s1600/atsf-cones.jpg)
I presume that the young pine cones have an outer layer like a leaf with cells that reflect the infrared light, but this was a bit unexpected.
This next photo shows some seaweed (on the coast of Bardsey Island in North Wales) and this also exhibits the effect.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgkZgORox1gHF6Hq2ZQS_-wdb3LfkJ0A_lWLUvlsA8m59O3iHjHz-w9TxCfTlaKJkTOoOwfiFXYpiQfQ_z8eZgPPq5MbfZS_CCDRyjVqlDevw4tiB5KF6M_FN8k21wlTJjU_3qlUB2sS0ehj3SkSIWrEn8VwJ_Wci0LYJzvo1uGab4Q6zOMTQE5DgAy7g/s1600/bardsey-seaweed-b&w.jpg)
The black dots in the water are seals by the way.
A final thing that looks different to what you would expect in infrared photography is red wine, which appears transparent. A photo to demonstrate that is for another post sometime. Cheers.