The electric lights are spaced six feet apart and turned on three to four hours during the daytime until 65 days before the blooms are due, when they must be turned off.
通常在每分地的花田中，裝設電燈約一百盞，每二盞間距離六尺左右。每日在夜間開燈照明三至四小時。在收穫前六十五天左右，即停止燈照。