Blue Reiko

Hydrangea macrophylla ’Blue Reiko'

Flower name
Blue Reiko
Scientific name
Hydrangea macrophylla ’Blue Reiko'
Alias伊豆の踊子, 紫陽花, ガクアジサイ, ガクアジサイ 'イズノオドリコ', 額紫陽花
Place of originJapan
Place of floweringGarden, Botanical Gardens, Potted flower
Flowering seasonJune, July

What is Blue Reiko

Hydrangea macrophylla 'Blue Reiko' (scientific name: Hydrangea macrophylla ’Blue Reiko’) is a hardy deciduous shrub of the Hydrangea genus in the Hydrangeaceae family, commonly known as bigleaf hydrangea or hortensia. Its leaves are large, glossy, and prominently serrated.

The decorative flowers are large and round (single-petaled), numerous, and single-flowered, with petal incisions that form a semi-globe shape. The color of the decorative flowers is a light bluish-purple, while the fertile flowers are blue.

Common Name: 'Blue Reiko'
scientific name: Hydrangea macrophylla ’Blue Reiko’
Height: 1m (large)
Leaf Quality: Thick and glossy; upper leaf surface: dark green, lower leaf surface: yellowish green; leaf shape: rounded with a sudden elongation and pointed tip; leaf margin: large serrations.
Flowering Period: Late June to late July, mid-season.
Inflorescence Form: Scattered inflorescence; inflorescence diameter: 10-20cm; corolla type: lacecap hydrangea; decorative flowers: blue with white margins.
Bloom Type: Single-layered, sterile flowers; decorative flower diameter: 3-8cm; hermaphroditic flowers: blue, flower diameter: 1cm.
Flower Color: Subject to changes based on soil acidity (blue, pink, white, purple).