It doesn't have to be an MC plant and afaik it's based on the Alchemy lore too. So if, for example, a herb is described to be found in "cold mountains" and to look like "vines" then you should assume the best drop chance of said herb is in cold biomes by using the sheers on vines (right click btw).
.thumb.png.d3bfe8801fe70f788570cf9990b99a9e.png)
.thumb.jpg.515cb8fe18c5ada45bff5cde0f2c2293.jpg)
.thumb.gif.f363e1e24ec35c023d600bb13f6d2f03.gif)
.thumb.gif.02ff47a8cd4a81211e2f70d6e076f3d4.gif)
