Boison Vine is much more of a challenge for you than his first form was. For Boison Vine, it spits out various gases at you that can cause a whole bunch of Status Ailments to you, so your best bet is to avoid them. It also throws out Blue Seeds at you and a little vine also whips out to cause pathetic damage to you. To take this thing down, first target its stomach like area that opens up and shows you a yellow part to it.