Isn’t it illegal to just plant things along the interstate?

Yup. It is. And far be if from me to suggest anything illegal . . .

But if you SHOULD happen to decide to engage in guerilla tree planting anyway, here are some things to take under consideration:

(1) Try not to get caught

(2) Remember that people living near the interstate have rights too (more on this below)

(3) Constantly keep in mind the safety of drivers (more on this below, too)