RGH Rooms
![RGH114Image.jpg](/growth-facilities/sites/files/growth-facilities/styles/full_width_m/public/2023-11/RGH114Image_1.jpg.webp?itok=iKxlvNNF)
In the Research greenhouse, we primarily rely on the sun and we use high pressure sodium (HPS) as supplementary light to extend daylength or increase light intensity.
![RGH114_AfternoonHPSMH_Graph.png](/growth-facilities/sites/files/growth-facilities/styles/full_width_m/public/2023-10/RGH114_AfternoonHPSMH_Graph.png.webp?itok=YjJPDFzK)
RGH using HPS Light + Cloudy Afternoon Sunlight (2:40pm on October 30, 2023)
![RGH114_AfternoonHPSMH_Table.png](/growth-facilities/sites/files/growth-facilities/styles/full_width_m/public/2023-11/RGH114_AfternoonHPSMH_Table_0.png.webp?itok=HfaG0IJo)
![RGH114_EveningHPSMH_Graph.png](/growth-facilities/sites/files/growth-facilities/styles/full_width_m/public/2023-10/RGH114_EveningHPSMH_Graph.png.webp?itok=AKdXaZgg)
RGH using HPS Light + Cloudy Evening Sunlight (6:05 pm on October 30, 2023)
![RGH114_EveningHPSMH_Table.png](/growth-facilities/sites/files/growth-facilities/styles/full_width_m/public/2023-11/RGH114_EveningHPSMH_Table_0.png.webp?itok=EyWG5eM-)
![CloudyAfternoonSun_Graph.png](/growth-facilities/sites/files/growth-facilities/styles/full_width_m/public/2023-10/CloudyAfternoonSun_Graph_1.png.webp?itok=ikSPXOlt)
RGH Cloudy Afternoon Sunlight(4:46pm on October 23, 2023)
![CloudyAfternoonSun_Table.png](/growth-facilities/sites/files/growth-facilities/styles/full_width_m/public/2023-11/CloudyAfternoonSun_Table.png.webp?itok=nXPZYbKE)
![CloudyEveningSun_Graph.png](/growth-facilities/sites/files/growth-facilities/styles/full_width_m/public/2023-10/CloudyEveningSun_Graph_1.png.webp?itok=XX4r-hsI)
Cloudy Evening Sunlight Spectrum (6:40pm on October 23, 2023)
![CloudyEveningSun_Table.png](/growth-facilities/sites/files/growth-facilities/styles/full_width_m/public/2023-11/CloudyEveningSun_Table_0.png.webp?itok=YJ_37pRu)