Japanese azalea

Rhododendron molle subsp. japonicum

  • Japanese azalea
  • Japanese azalea
  • Japanese azalea
  • Japanese azalea
  • Flower name
    Japanese azalea
  • Scientific name
    Rhododendron molle subsp. japonicum
  • Aliasオニツツジ, 蓮華躑躅, 鬼躑躅, Japanese azalea
  • Place of originJapan
  • Place of floweringGarden, Botanical Gardens
  • Flowering seasonApril, May, June

What is Japanese azalea

Japanese azalea (Scientific name:Rhododendron molle subsp. japonicum) is native to Japan and is a cold-resistant deciduous shrub of the family Ericaceae. It grows wild on plateaus and grasslands. It does not like the heat and humidity, it prefers a cool and sunny environment. The largest flower blooms in the moss found in Japan. At spring to rainy season, several scarlet five-petaled flowers are brought together in a large flower at the branch tip. There is honey in the flowers. The fruit that comes after the flower is a long spherical fruit with strong hair. There are fine hairs on the leaf edge. It is not suitable for cultivation in places where summer summer sun falls. The flower name is based on the resemblance of a rose like a lotus flower. There is a convulsive poison that causes respiratory arrest in the whole tree. As it is toxic even if it eats livestock such as horses and cows, it is also known as horse azalea. Lotus flower buds include yellow flower buds that bloom yellow flowers and white flower varieties grown from lotus flower buds.

Common name: Japanese azalea, Scientific name: Rhododendron molle subsp. japonicum, Place of Origin: Japan, Habitat distribution: Southern Hokkaido to Kyushu, Environment: grassland, Tree height: 1 to 3 m, Living type: Deciduous Shrub, Phylogeny: Reciprocal, Leaf Length: 5 to 12 cm, Leaf Shape: Falling Needle, Flowering stage: April to June, flower shape: funnel-shaped, with 5 tips at the tip, flower color: reddish red, yellow, white, flower diameter: 5 to 6 cm, fruiting stage: October to November, fruit: Spheroid fruit, Usage: Garden trees, flowers, Caution: Toxic plants.


  • Order
    Ericales
  • Family
    Ericaceae
  • Genus
    Rhododendron
  • Species
    R. molle subsp. japonicum
  • Type of flower
    Radial symmetrical flower
  • Array of flower
  • Petal shape
    Funnel/trumpet shaped
  • Leaf type
    Inverted lanceolate
  • Edge of the leaf
    All edges
  • Life type cold-resistant deciduous shrub
  • Flower colorsYellow
  • Colors of the leavesGreen
  • Fruit colorGreen
  • Height100.0 ~ 200.0 cm
  • Diameter of flower5.0 ~ 6.0 cm

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