Magnolia grandiflora 'MONT BLANC'®

Magnolia grandiflora
Magnolia grandiflora 'MONT BLANC'®
southern magnolia, bull bay
SIZE/TYPE medium-sized tree
USUAL HEIGHT 4-8m
USUAL WIDTH 3-5m
LEAVES evergreen broadleaf
COLOUR OF LEAVES green
FLOWERS showy
COLOUR OF FLOWERS cream
BLOOMING TIME June - September
LOCATION full sun
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 Evergreen broadleaf
Summer blooms
Exotics
Rarities
náhled fotonáhled fotonáhled foto
Evergreen (southern) magnolias are flowering queens among ornamental trees. We choose the hardiest and most beautiful varieties that can live happily in zones 6 and up. Mont Blanc® is a French sensation which received Gold Medal for best novelty during Salon du Végétal in 2011. It was introduced by altogether 3 nurseries: Pépinières d’ENGANDOU, Pépinières RIPOCHE a Pépinières du VAL D’ERDRE. Though, in spite of many words said, the most important information is missing - its origin. According to its rapid growth rate and place of origin it could be a mutation of Nannetensis®, plus it may have caught a chromosome of Exmouth for its undulated foliage.

Southern magnolia Mont Blanc® produces the largest flowers ever measured: 25-40 cm across on older plants. They are creamy white and highly fragrant. Their scent attracts not only bees and other insects, but also most perfume producers and all passersby, especially in late afternoon and early evening when it releases its rich, sweet and citrus fragrance several meters around. Each flower opens for one or two days only but is followed by another so the whole plant produces flowers from June until September. The older and stronger the plant the more flowers appear in continuity.

Its evergreen leaves are unique. They are large, too, 15-18 cm long, and 8-13 cm wide, and resemble those of ficus lyrata for their undulated, widened ends. They are leathery, dark green and very glossy, covered with cinnamon brown, suede-like indumentum underneath which protects them against drying winds. It grows vigorously into a large, oval to rounded shrub, or it can be trained into a mid-sized tree with a rounded canopy. For a denser habit and smaller size it can be pruned when young and later every 3-5 years in late April. As it flowers at the ends of ripe wood its blooming may be shy the year you prune it.

Southern magnolia is very hungry. It needs acidic, fertile, reasonably drained but not purely sandy soil. Clay in lower parts is beneficial. We strongly suggest using mycorrhizal fungi for its roots, they work miracles especially for large plants whom they help establish without any signs of defect. Now bring your attention to fertilizing, most importantly during its first three or four years after transplanting it needs regular feeding in order to keep all its foliage and to produce flowers freely. Use any sort of fertilizer for ericaceous plants and apply it according to instructions from May until late July. Keep the plant’s roots constantly moist during this period and don’t forget to water it also in winter when the ground is not frozen. Then it will fully establish and will not suffer from summer droughts and will not need extra feeding as its roots will be deep enough to find their own food. Choose only sunny locations, possibly with winter shade that may be welcome in areas with long-lasting winters. Mont Blanc® has not yet been trialed under all conditions and its lowest hardiness is expected to reach at least -23°C (USDA zone6).

Last update 26-01-2019
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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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