Rhododendron 'MADAME MASSON'

Rhododendron
Rhododendron 'MADAME MASSON'
rhododendron
SIZE/TYPE medium-sized shrub
USUAL HEIGHT 1.3-1.8m
USUAL WIDTH 1.5-1.8m
LEAVES evergreen broadleaf
COLOUR OF LEAVES green
FLOWERS showy
COLOUR OF FLOWERS combined:white and yellow
BLOOMING TIME May - June
LOCATION full to partial sun
SOIL TYPE acidic (peaty)
SOIL MOISTURE REQUIREMENTS evenly moist but well-drained
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 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.

Madame Masson is a queen of elegance from 1849. This large-flowered rhododendron boasts 6-7 cm wide, pure white flowers with pale yellow to medium amber orange dotting on the upper petal. They open from pink buds from the second decade of May. Evergreen leaves are leathery, broadly elliptic with conspicuous tips, 10-13 cm long, deep green, and partially glossy. The plant grows moderately into a dense, well-branched shrub about 1.8m tall and wide.

It is a cross between r. catawbiense and r. ponticum bred and introduced by Pierre Bertin (1800-1891). He was a French botanist, perhaps of Belgium origin, who at the age of only 30 years takes over a nursery in Lahaye where he begins his unforgettable career in breeding rhododendrons. There is a written record from 1849 speaking about a visit of Société d'Horticulture de Seine et Oise who counted more than 10 thousand of plants in his nursery. Madame Masson variety was probably named after a wife of a French historian Fréderic Masson. Only 164 (!) years later (in 2013) it receives the AGM award by the RHS.

For a better-looking plant deadhead rhododendrons where possible. The roots are shallow, spreading to sides in search for nutrients. Never plant them too deep. The soil must well-drained, acidic (of pH value 4.5-5.5), rich in humus, cool, and always moist. Ideal soil mixture is peat with lime-free, light garden soil topped with leaf-mould. Hardy to min. -27 °C (USDA zone 5b).

Last update 15-01-2007; 20-12-2021
SIZES and PRICES
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Rhododendron 'MADAME MASSON' height 30-40 cm
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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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