It can be said that this blooming golden flower tree of summer is followed with apricot tree of spring, making the natural scenery more beautiful. One of the golden flowering trees in bloom of clusters, which is as beautiful as apricot tree and grown as ornamental, is Osaka, also known as Hoang Yen or Hoang Lan flower.
Osaka tree is originally imported from Japan. You will be interested to see the trees with golden flowers grown in thick clusters, full and very beautiful bloom.
Hoang Yen flower is the national flower of Thailand and called dok khuen here. The golden flowers symbolize the Thai royal family.
Hoang Yen flower symbolizes the State of Kerala in India. Hoang Yen flower has a ritual importance in Vishu festival. In India, 20-rupee stamp has the picture of Hoang Yen flower.
Morphological features of Osaka flowers:
Tree-trunk, leaf canopy, leaves: medium-sized tree, 10–20 m in height, smooth and round tree-trunk, long and soft tree branch; pinnate leaf with three to eight pairs of thick and light green leaflets, slightly musty in the underside
Flower, fruits and seeds: flowers produced in pendulous racemes 30–50 cm with many long-stemmed flowers; medium-sized flower with lemon yellow color, soft petals expanded and spread slowly from the root to the top; Large fruit, 30 - 40cm in length; flattened and think seeds. Flowering season: dry season (about March to July).
Physiological, ecological features of Osaka flowers:
Speed of growth: Fast.
Living conditions: This kind of tree is easy to adapt to different living conditions. However, growth for this tree is best in porosity soil, well-drained soil and full sun. It’s planted with seeds.
Osaka is one of trees flowering all year round. It has the bright yellow blossoms with a special shape called Hoang Yen. Osaka flower trees are planted as an ornamental in many countries around the world and have been recorded for a long time in Indian Pharmacopoeia. It is called the “disease elimination method”.
This kind of tree is used to treat the symptoms such as high fever, arthritis, constipation, hemorrhage or bleeding, cardiovascular disorders, neurological diseases and excess stomach acid.
Effects in medicine: all parts of the tree have medicinal effects, but fruits are the main components of this medicine.
1. Laxative effect:
2. Cold cure:
3. Antipyretic effect:
4. Treatment of intestinal disorders:
5. Cure chills intoxicated by drugs:
6. Treatment of skin diseases:
7. Leaves used for edema, joint pain or mild paralysis treatment:
Because the trees have a lot of beautiful flowers, wide leaf canopy, fast growing, not too high tree-trunk, horizontal and adhesive roots, many people like to plant them as ornamental in gardens, parks, villas, houses and to adorn the other buildings.
If this plant is potted ornamental, it’s difficult to control the flowering time in the Lunar New Year.