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Giedi Prime had a day length of approximately 31.27 standard hours and a local year lasting 2.6 standard years. The planet was of average temperatures and maintained a low level of photosynthesis. This low level of photosynthesis was largely due to the heavy industrialisation of the planet under the Harkonnens. However, the Harkonnens did maintain some of the planet's original forests, mainly of pilingitam trees for logging and export.

During the time of the Padishah empire, the planet sported factories, arenas, and many cities. The arenas were used to hold spectacles for the populace, including gladiatorial events. During the rule of the Baron Vladimir Harkonnen, his nephew Feyd-Rautha would often perform in these arenas as a means of gaining popularity among the civilian population as well as the Houses Minor. The main climate was harsh, industrial volcanic wasteland.