Answer: Joshua tree is really a yucca (Yucca brevifolia), and it is a striking plant. It's found growing naturally in very few places. There's a Joshua Tree National Monument (or perhaps Park?) outside of Palm Springs, CA. I've also seen them growing in the desert outside of Las Vegas and on a highway between Phoenix, AZ and Las Vegas. You can probably tell from these places that it's a native of arid, desert conditions in the Southwest. It doesn't seem to do that well transplanted in a landscape environment here in Phoenix. I don't see it used very often (also because they are very slow growers and expensive!). It must have dry, gravelly, well-drained soil--not garden soil. I don't want to discourage you, but I'm not very optimistic about it in your state's high humidity, but then you might be the person with the amazing green thumb who could get it to thrive! I hope this information helps and thanks for writing!
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