I recently ran into an article that was interesting. There is research on getting plants to send you a message when they get dry. Can you picture being on a vacation in Greece and having to call you houseplant sitter and telling them your Pothos is too dry?

 check it out here.

http://www.sciencedaily.com/videos/2009/0101-thirsty_plants_text_for_help.htm

  cut and paste in your browser

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