The tech executive caught wind of the campaign Monday, replying to Donaldson's tweet calling the campaign "cool" and inquiring "where are the trees being planted" and "what kind of trees."

YouTube is also planning on matching the next million dollars donated to TeamTrees through the YouTube donate button, Donaldson wrote in a tweet.

According to the campaign's website, one dollar is equivalent to one tree, and the trees will be "planted in a variety of forests on public and private lands in areas of great need."

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Tesla CEO Elon Musk casually promised a massive contribution to a YouTuber's tree-planting campaign, announcing the donation via tweet.

Donaldson replied to Musk's tweet, calling him "Treelon Musk," which prompted the Tesla CEO to change his Twitter name to "Treelon" and make his profile picture an image of a forest.

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