Allium caesium, light blue garlic, is a species of herbaceous perennial flowering plant native to central Asia (Xinjiang, Kazakhstan, Kyrgyzstan, Tajikistan, Uzbekistan). It grows in deserts and dry fields at elevations of . Allium caesium is typically about tall, and grows best in full sun to partial shade. It produces round bulbs up to 15 mm across. The scapes are up to tall. The leaves are round in cross-section, and slightly shorter than the scapes. The flowers are sky-blue. They typically appear in the summer (June to August in England) and attract pollinators such as bees and butterflies. The Latin specific epithet caesium means “grey-blue”. In cultivation in the UK, this plant has gained the Royal Horticultural Society’s Award of Garden Merit. In the US it is suitable for hardiness zones 4-7. References caesium Onions Flora of China Flora of Xinjiang Flora of Kazakhstan Flora of Kyrgyzstan Flora of Tajikistan Flora of Uzbekistan Plants described in 1844