User blog comment:Xilinoc/Ch. 636 - Sensitive Monster/@comment-25931707-20150723202142/@comment-24531362-20150724084844

Trees do have ways to detect changes in the temperature of their environments, which is what our nerves do (every bit of feeling we perceive as the senses of touch and pain reception links directly to temperature inequalities). So, while they might not have nerves in the precise sense, they have something analogous to it.