Sirius Star Symbolizes Autumn Onset and Agricultural Shift in Saudi Arabia’s Asir Region

The celestial event of Sirius, known locally as “Alb,” marked the official start of the traditional autumn season in Asir, a mountainous region in southwestern Saudi Arabia, on July 16. This astronomical phenomenon signals a critical transition in the area’s agricultural calendar, affecting planting and harvesting cycles for generations.

According to Dr. Abdullah Al-Mousa, a researcher in the region, the star’s appearance coincides with the northward movement of the Indian seasonal low-pressure system over the highlands. This atmospheric shift fosters the formation of cumulonimbus clouds, leading to essential summer rainfall that sustains local farming practices.

The period is also characterized by “Ghusmat Alb,” a local phenomenon where dust storms from the Tihama lowlands sweep across the region. This seasonal change is intertwined with cultural traditions, including the emergence of fledgling crows and specific flora and fauna, reflecting a harmony between natural cycles and human activity.

Asir’s unique geography—spanning from the Sarawat Mountains to the Tihama plains—creates a cooler climate compared to the rest of Saudi Arabia. This environment supports year-round cultivation of rain-fed crops, such as sorghum, pearl millet, and sesame, which are particularly suited to the region’s arid conditions when managed with traditional terraced farming methods.

Modern agricultural practices in Asir blend ancient knowledge with contemporary technology. Farmers utilize efficient irrigation systems and greenhouse cultivation to maximize water use while preserving soil quality. The region is renowned for producing a diverse array of crops, including wheat, corn, barley, and temperate fruits like apples, pears, and pomegranates, which thrive at higher altitudes.

In recent years, Asir has emerged as a leader in specialty coffee cultivation, capitalizing on its mountainous terrain and climate. Meanwhile, the Bisha governorate remains a key date producer. Though Asir contributes only about 2 percent of Saudi Arabia’s total raw crop volume, its agricultural significance lies in its specialization and high-value products.

The region is also a hub for beekeeping, accounting for 20 percent of the Kingdom’s honey production in 2024. Additionally, Asir’s million-hectare forested areas host 70 percent of Saudi Arabia’s vegetation diversity, underscoring its ecological and economic importance in the country’s agricultural landscape.

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