Thanks @instudiocity . Seems like it could work, but a lot of efforts for most likely failure. I already find it hard to keep alive a pot plant indoors. I am gonna stick with technology solutions (either chemical or electronic, or a combination of both)
And @mike carey , I am not surprised, Canberra weather is just like Provence, where lavender thrives (even seen what they sell in “l’occitane” shops? Mostly lavender based products). But here in NY, we often have -20 deg C for several days.
There are a few places in the world that have what is sometimes called “Mediterranean climate”. California, coast of South Africa, south east of Australia, parts of Argentina, and of course, most of the Mediterranean Sea’s coastal land.