palram harmony 6×8 polycarbonate greenhouse. how to choose the siding for your greenhouse. azrom is israel\u0027s leader in the design, engineering and production of greenhouses for all crop. roof blinds – 1 closed, 1 open. citrus fruits are the country\u0027s main export crops israel\u0027s soil and climate give the fruit. greenhouse from old windows gotta remember to hinge the roof windows for ventilation. greenhouse 021.