The variety I have is Hibiscus syriacus ‘Oiseau Bleu’ which has amazing large deep purple/blue coloured flowers with a bright magenta centre. It is a deciduous shrub but has lovely dark green foliage during late spring and summer.
They like to be in full sun and planted in a rich, moist, well-drained soil, they are fully hardy and flower between August to October.
Prune young plants in late spring to encourage a bushy habit but once established they need little care except to mulch well in autumn to help retain moisture and keep down weeds.
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