Broadstemmed onion (Allium platycaule)

Broadstemmed onion

Allium platycaule grows from a gray bulb 1.9 to 3 cm wide. Scape is thin and strongly flattened, up to 25 cm long but rarely more than 6 mm across. The long, flat leaves are sickle-shaped. Atop the stem is an umbel which may have as many as 90 flowers in it. Each flower may be up to 1 cm and 5 mm wide but the tepals are quite narrow so as to be almost threadlike. The flowers are generally bright pink to magenta with yellow anthers.

Scientific classification

Species

Broadstemmed onion (Allium platycaule)

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Perennial

Lifespan

Herb

Plant Type

10 cm

Plant Height

Deciduous

Leaf type

5 - 32 ℃

Ideal Temperature

Images of Broadstemmed onion

Care Guide for Broadstemmed onion

Every week

Water

Full sun

Sunlight

5 - 32 ℃

Ideal Temperature

Water: Thriving in dry, rocky environments, broadstemmed onion prefers infrequent moisture and shows moderate drought tolerance. Cultivated outdoors, it requires weekly watering without oversaturation, thriving in well-draining soil to prevent root rot.

Pruning: Broadstemmed onion has broad leaves and star-shaped flowers. Prune in early spring to shape and eliminate dead growth. Cutting back spent flowers boosts health and blooms. Use clean tools, cutting above a leaf node for best results. Regular pruning enhances growth density and visual appeal.

Propagation: Broadstemmed onion is propagated through careful excavation of tubers from mature plants. Handle tubers gently to maintain viability, then plant in well-prepared, organic-rich soil with adequate spacing. Consistent moisture, without waterlogging, is essential for healthy root development and establishment.

Repotting: Broadstemmed onion requires excellent drainage in pots to thrive and prevent waterlogging, ensuring optimal growth conditions.

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