What's the name of that TV show? Do you remember? Please tell me if you know?

It was a TV show that I watched around the late nineties.A spaceship crashes on another planet and the crew members get separated(some of them but not all).The original inhabitants of the planet are big,bulky%26amp;dark sort of creatures that live(if I remember correctly)underground%26amp;if I remember correctly also that the creatures communicated through telekenisis.The show was maybe Australian or maybe from the US. In one episode one of the humans smelt a flower but the flower released some sort of powder%26amp;it caused the person to unwillingly run to an unknown destination.So one day that person would disappear in the middle of the night. Finally at the end of the episode,the other crew members track him%26amp;one of them gets to him. they find out that he is about to jump to the base of a deep gorge on that planet,they try to prevent him but fail to do so.In the end he doesnt jump but lies down near the gorge%26amp;the same powder comes out of his mouth%26amp;goes into the gorge to bring spring season on planet!!
What's the name of that TV show? Do you remember? Please tell me if you know?
Earth2
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