I dunno who decided to kill the spice tree in Onto Parada and put a gas tree in instead, but I'm really curious about your motivations - is there anything in Glitch as useless as a gas tree?
(Seriously - once you do the first quest, then get the trophy for having all of them and the achievement for fiddling with all of them, do gases have any purpose at all? I store up lots of White Gas because it sells for the most and then just vendor it.)