In trinity combat routine under barb tab you will find a bunch of sliders area - this is where avoidance is configured - or in other words how the bot will behave when he encounters arcane molten desecrator etc. Here you will look for posion tree line. You can configure both hp and radius. As far as i remember the radius should not be changed - i believe the default is set to the radius of the poison tree circle - but you can configure at what hp the avodiance should be activated. So if you ding it to 50%, the bot will try to avoid posion tree only while under 50%. You most definitely dont wanna leave this at 100% because it is bad for efficiency to have your bot just running around trying to avoid when he can actually fight through it.