I AM ALMOST POSITIVE THAT THE EVERGRENN TREE PUTS SOME SORTA ACID IN THE SOIL WHICH MAKES IT NOO GOOD FOR YOUR BABYS SOO MAKE SURE YOU PLANT SOME WAYS AWAY AND DEFF. USE SOME GOOD SOIL AND DIGG DEEP HAHAHAHyes - there is a heat sig. that is more recognizable among most other plants you find in the woods - except one that i know of called an evergreen tree- it gives off about the same signature - plant near them to help mask detection.