How to identify Persian onion (Allium aflatunense)
Persian onion reaches a stature of 24-36 inches (60-90 cm) tall with striking spherical clusters of flowers perched atop sturdy, leafless stems. These floral umbels, with numerous individual blooms, appear in a synchronous display after the spring bulbs have retreated, signaling the onset of early summer. The bloom period persists for 2-3 weeks, with flowers emanating a distinct aroma akin to onions or garlic. Persian onion's blossoms are a popular choice for cutting, contributing their unique scent and spherical form to floral arrangements.
Lifespan: Perennial
Plant Type: Herb
Leaf Type: Deciduous
Basal rosette of strap-like green leaves, up to 12 inches (30 cm) long.
Erect leafless stems, 2-3 feet (60-90 cm) tall, smooth and hollow with distinct ribbing.
Striking spherical clusters of small purple star-shaped flowers with onion-like aroma.
Flowers in clusters 4-5 inches (10-13 cm) across, vibrant for 2-3 weeks.
Distinctive scent resembling garlic or onions, popular cut flower for unique aroma.
The leaves of persian onion are basal, strap-like, and green. They typically emerge from the base of the plant, forming a rosette. The leaves can grow up to 12 inches (30 cm) in length and 1 inch (2.5 cm) in width. They have a smooth texture and a bright, vibrant green color, with parallel veins running their length. The margins are smooth and entire, offering a neatly edged appearance. The overall shape of the leaves is elongated and somewhat linear.
Persian onion features small, star-shaped, purple flowers, each with six distinct petals. These flowers are arranged in spherical clusters measuring 4-5 inches (10-13 cm) across. Blooming in May, the flowers release a garlic or onion-like aroma and stay vibrant for 2-3 weeks. They make excellent cut flowers due to their striking appearance and lasting freshness. The naked stem enhances the visual impact of the dense flower clusters, making persian onion easily identifiable.
The stem of persian onion features hollow, slightly ribbed, green scapes that stand erect and are leafless. These cylindrical stems are smooth to the touch and typically measure about 2-3 feet (60-90 cm) in height. Each stem lacks branching, resulting in a solitary, clean line. The texture is firm and robust, making it suitable to support the plant’s large inflorescence. The distinct ribbing and hollow nature are key identifying features.
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Scientific Classification of Persian onion
