Hibiscus syriacus 'Minsyroi5' SUP'BLUE®

Hibiscus syriacus 'Minsyroi5'
Hibiscus syriacus 'Minsyroi5' SUP'BLUE®
Rose-of-Sharon
SIZE/TYPE medium-sized shrub
 taller shrub
USUAL HEIGHT 1.5-3m
USUAL WIDTH 1-1.5m
LEAVES deciduous broadleaf
COLOUR OF LEAVES green
FLOWERS showy
COLOUR OF FLOWERS violet
BLOOMING TIME July - September
LOCATION full sun
SOIL TYPE neutral to alkaline
SOIL MOISTURE REQUIREMENTS evenly moist (dislikes drought)
USDA zone (lowest) 5   (down to -29°C)
WINTER PROTECTION  
FOR ZONE 5+6 Code of winter protection zone 5+6
FOR ZONE 7 Code of winter protection zone 7
BELONGS TO CATEGORIES Deciduous broadleaf
Summer blooms
náhled fotonáhled foto
Rose-of-Sharon deserves more attention for its abundant flowering in summer. These maintenance-free shrubs come from eastern Asia and are the inevitable ingredient of every summer garden which they highlight with a wide range of coloured flowers. There has been a number of cultivars available since its discovery. They have various bloom colours, shapes and sizes, as well as variegated leaves. SUP‘BLUE® is an improvement over an older variety Oiseau Bleu selected by French nursery Pepinieres Minier. It was granted an EU patent 57848 in 2021.

SUP‘BLUE® Rose-of-Sharon boasts large, 11-12 cm wide, violet blue flowers with deep maroon eye in the centre. They are single and come out reliably every year in July and don’t stop blooming until all buds have gone - sometimes by end September. The plant grows into a densely branched, upright shrub.

It has very decorative leaves that are unique. They are shalowly lobed, palmate, mid to dark green and coarsely toothed. If they turn yellow in summer the plant manifests too much water at the roots. They are either over-watered or planted in too heavy soil where it has not established yet.

Pruning is an issue that always gets me started here. Hard pruning leads to larger flowers, that's true, but also production of long, immature, flexible twigs. The only cut I recommend is such that rejuvenates old plans – prune it hard in early spring by 50-75 % and let it grow for another 10 years or so.

Rose-of-Sharon is quite adaptable of soil type. It can take drought but does not look good if dry for too long. It loves moisture fully established plants thrive on occasional flooding in summer, but you cannot transplant it into standing water. Old plants dislike peat. Selective fertilizers enhancing flowering are convenient but not crucial. Place it in full sun only. Fully hardy to min. -27 °C (USDA zone 5) and not suitable for pots.

Last update 14-09-2021
SIZES and PRICES
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Hibiscus syriacus 'Minsyroi5' height 50-70 cm, width 30-40 cm
De Luxe
CHLUMEC BY POST
Hibiscus syriacus 'Minsyroi5' height 50-70 cm, width 30-40 cm
De Luxe
PRAGUE BY POST

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GLOSSARY
  • STANDARD QUALITY - Plants of this group are 1st class quality with number of branches and overall density adequate to their size and age, considering they were container grown.
  • DE LUXE QUALITY - This label guarantees a luxurious quality of manually selected plants that, compared to their height and age, are exceptionally dense and beautiful.
  • EXTRA - These plants are usually mature and bigger specimens with exceptional overall appearance.
  • STANDARD (as described in the plant form) means a tree with a trunk of 190-210 cm and a crown at the top, unless specified differently. The commercial size for trees is their girth measured in the height of 1m from ground.
  • HOBBY - These plants are of the same quality as our standard-quality plants but younger and therefore cheaper.
  • SHRUB - a woody plant with branches growing bushy from the ground level.
  • HALF-STANDARD or MINI-STANDARD - a small tree with shorter trunk, its size is usually specified.
  • FEATHERED - These are trees with branches growing already from the base of the trunk and up along the stem.
  • GRASSES and PERENNIALS - Sizes given usually read the diameter of the pot or the clump, as specified.
LARGE PLANTS over 150 cmspecimens, screening and hedging shrubs

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