Rhododendron 'SEPTEMBER BLUES'

Rhododendron
Rhododendron 'SEPTEMBER BLUES'
rhododendron
SIZE/TYPE medium-sized shrub
USUAL HEIGHT 1-1.3m
USUAL WIDTH 1-1.5m
LEAVES evergreen broadleaf
COLOUR OF LEAVES green
FLOWERS showy
COLOUR OF FLOWERS combined:purple red and orange
BLOOMING TIME May
LOCATION full sun to shade
SOIL TYPE acidic (peaty)
SOIL MOISTURE REQUIREMENTS evenly moist but well-drained
USDA zone (lowest) 6   (down to -23°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 Rhododendrons, azaleas, and mountain laurels
Evergreen broadleaf
náhled fotonáhled fotonáhled foto
Rhododendrons are reliable, beautifully flowering, evergreen shrubs of variable origin: S.W. China, Himalayas, Northern America, and even Europe. The original species were hybridized several times for better performance so in the 1950's there were more than 10,000 cultivars registered, and the number keeps increasing. An interesting group of rhododendrons are those which open their flowers again in late summer. Hans Hachmann and his son Holger breed them in their nursery in Barmstedt, Germany.

September Blues is repeat flowering rhododendron hybrid which blooms profusely from late April until mid May for the first time, and from late summer as a second flush. The flowers are dark magenta purple with a large, deep golden orange blotch on the upper petal. Evergreen leaves are leathery, dark green, medium glossy, narrowly elongated. The plant forms a compact shrub which in 10 years gets only about half a meter tall but almost twice as wide.

Autumn flowering takes longer (5-6 weeks) and begins in early September. The flowers in the truss open individually, one by one, and are best removed when faded in order to keep the rest of the truss nice for the newly opening ones.

For a better-looking shrub deadhead where possible. The roots are shallow, spreading to sides in search for nutrients. Never plant them too deep. The soil has to be acidic (pH 4.5-5.5), rich in humus, cool and always moist. Ideal soil mixture is peat with lime-free, light garden soil topped with leave-mould. Its hardiness has not been tested in extremes yet but has so far withstood -24 °C (USDA zone 6) and is expected to take also deeper frost.

Last update 09-06-2022
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Rhododendron 'SEPTEMBER BLUES' height 30-40 cm
STANDARD
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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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