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*Rhododendron dauricum var. mucronulatum (Turcz.) Maxim.
*Rhododendron dauricum subsp. mucronulatum (Turcz.) Vorosch
Common Names: Korean rhododendron
Rhododendron mucronulatum is a deciduous Shrub growing to 2.5 m (8ft 2in).
It is in flower from Apr to May. The flowers are hermaphrodite (have both male and female organs) and are pollinated by Insects.
These are deciduous shrubs, often with rather twisting-rambling branches. Autumn leaf colour is often very good in R. mucronulatum. The scales on their leaves and twigs (that can be seen with a good magnifying lens), reveal that they belong to the subgenus Rhododendron (or lepidopes). In comparison to their nearest relative, the semi-evergreen R. dauricum, the leaf-scales are not so dense (2 4 times their diameter apart) and the flowers are larger in this species. However, there is considerable variation in these characters within these two species, and they hybridize to form swarms of intermediate types in nature. The widely, funnel-shaped, flowers are typically rosy-purple in colour, but can be pink and even white. They open successively from clusters of buds at the end of the shoots before the leaves expand. While they can be killed by frosts below -5C, damaged flowers are soon replaced by the next ones to open. We place our plants where they are not too exposed to the night sky in order to protect the flowers from spring frosts.
Succeeds in a most humus-rich lime-free soils except those of a dry arid nature or those that are heavy or clayey. Prefers a peaty or well-drained sandy loam. Succeeds in sun or shade, the warmer the climate the more shade a plant requires. A pH between 4.5 and 5.5 is idea. Hardy to about -25°c. A very ornamental plant. Succeeds in a woodland though, because of its surface-rooting habit, it does not compete well with surface-rooting trees. Plants need to be kept well weeded, they dislike other plants growing over or into their root system, in particular they grow badly with ground cover plants, herbaceous plants and heathers. Plants form a root ball and are very tolerant of being transplanted, even when quite large, so long as the root ball is kept intact. Plants in this genus are notably susceptible to honey fungus.
Seed – best sown in a greenhouse as soon as it is ripe in the autumn and given artificial light. Alternatively sow the seed in a lightly shaded part of the warm greenhouse in late winter or in a cold greenhouse in April. Surface-sow the seed and do not allow the compost to become dry. Pot up the seedlings when they are large enough to handle and grow on in a greenhouse for at least the first winter. Layering in late July. Takes 15 – 24 months. Cuttings of half-ripe wood, August in a frame. Difficult
Edible Uses: ….Flower petals – raw. Some caution is advised, see the notes below on toxicity.
Medicinal Uses: Not yet Known.
Known Hazards: Although no specific mention of toxicity has been seen for this species, it belongs to a genus where many members have poisonous leaves. The pollen of many if not all species of rhododendrons is also probably toxic, being said to cause intoxication when eaten in large quantities.
Disclaimer : The information presented herein is intended for educational purposes only. Individual results may vary, and before using any supplement, it is always advisable to consult with your own health care provider.
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