6. Rose Mallow 'Oiseau Bleu' (Hibiscus syriacus 'Oiseau Bleu')
6. Rose Mallow 'Oiseau Bleu' (Hibiscus syriacus 'Oiseau Bleu') (Image 6 of 11)
Height x Spread: 2.5m x 2.5m
Prefers: Full sun; moist but well-drained soil of any type; west or south-facing; sheltered spot.
Hibiscus syriacus 'Oiseau Bleu' is a medium-sized, upright deciduous shrub with lobed, dark green leaves. The flowers, which appear in late summer and autumn, are a striking violet-blue with a maroon centre, up to 8cm in width.
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