I echo Ray. Prehistoric people bloomed orchids with plain fluorescent tubes way back in the 1960s and 70s.
The Duke of Devonshire in the mid 1800s, after spending more than the modern equivalent of a million dollars on greenhouse glass, and building a railroad spur to bring coal to his greenhouse furnace, decided electric lighting to flower just one plant in the winter would be too expensive. We are quite lucky.
Last edited by estación seca; 12-31-2017 at 01:15 PM..
|