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Incandescent light bulbs are officially banned in the U.S.
(www.digitaljournal.com)
This is a most excellent place for technology news and articles.
Plants don't need much, if any, green light (they reflect it). LEDs can be made to be full spectrum. I can think of no reason why anyone would want incandescent lights for plants. Even before cheap high power LEDs were a thing, people usually used high pressure sodium lights.