A Detailed Guide to the Growth Habits and Propagation Methods of Jacaranda
Jacaranda blooms from late spring to early autumn, and its leaves all fall when it flowers. The capsule is woody, ovoid, slightly flattened, light brown, about 5 cm in diameter, and the seeds are small and winged. The wood is dark brown.
Growth Habits
It prefers a warm climate and is best planted in a sunny location. It is not demanding about soil conditions and grows well in ordinary neutral and slightly acidic soil.
Propagation Techniques
Jacaranda is propagated by sowing, cuttings, tissue culture and other methods. Its capsules mature in November; after harvesting, they are placed in a windless spot to sun-dry or piled up, then stored after drying until March of the following year, and sown when the temperature is around 20°C, but the seed germination rate is only about 5%.
Jacaranda cutting propagation can be carried out in both spring and autumn; choose moderately mature branches as cuttings for a high rooting rate. Tissue culture of jacaranda is also relatively easy; some scientific research institutions in China have used the stem tips and stem segments of seedlings as explants and propagated a large number of test-tube plantlets.
What are the growth habits of jacaranda? What is its flower language?
Jacaranda, a deciduous tree of the Bignoniaceae family, can grow to about 15 m tall. It is native to Brazil, Bolivia and Argentina in South America. In China it is cultivated for garden ornament in Guangdong (Guangzhou), Hainan, Guangxi, Fujian and southern Yunnan (Xishuangbanna). Jacaranda is a tree valued for its ornamental form, foliage and flowers, and is widely planted as a street tree in tropical and warm subtropical regions. Its wood is yellowish white to gray, soft and light, with straight grain, easy to work, and can be used as furniture timber. It has both ornamental and economic value.
The flower language of jacaranda:
1. Representing tranquility, profundity and melancholy;
2. Profound, cool, quiet and open;
3. Cold, lifeless, steady, deep, elegantly refined;
4. Waiting for love in despair, honorable even in defeat.
A Brief Introduction to Jacaranda:
Jacaranda is a deciduous tree. Its crown is tall, 12-15 m high and up to 20 m at most. It is a beautiful tree valued for its foliage and flowers. It blooms once each in summer and autumn every year, and at full bloom the whole tree is covered with purple-blue flowers, very elegant and delicate. Especially in the tropics, tree species with blue flowers are relatively rare, and moreover all its leaves drop when it blooms, so jacaranda is truly a rare and precious woody flowering plant. In addition, in Grafton, Australia, the Jacaranda Festival is held every year from the second-to-last weekend of October to the first weekend of November.
An Introduction to the Characteristics of Jacaranda:
Deciduous tree, up to 15 m tall. Leaves opposite, bipinnately compound, usually with more than 16 pairs of pinnae, each pinna with 16-24 pairs of leaflets; leaflets elliptic-lanceolate to elliptic-rhombic, 6-12 mm long, 2-7 mm wide, apex acute, base cuneate, entire. Flowers blue, inflorescence up to 30 cm long, about 18 cm in diameter. Calyx tubular, about 5 mm long and wide, with 5 calyx teeth.
Corolla tube slender, blue, slightly curved below and enlarged above, about 18 cm long, corolla lobes round. Stamens 4, didynamous, filaments inserted at the middle of the corolla tube. Ovary cylindrical, hairless.
Capsule woody, flattened ovoid, about 5 cm long and wide, thicker in the middle and gradually thinner toward the edges, not flat. Flowering period May-June.
The Growth Habits of Jacaranda:
It prefers a warm, humid, sunny environment and is not tolerant of frost or snow. It is not demanding about soil conditions and grows well in ordinary neutral and slightly acidic soil.
Cultivation and Care Techniques for Jacaranda:
Propagation Methods
The propagation methods of jacaranda include propagation by sowing, propagation by cuttings and propagation by tissue culture.
Propagation by Sowing:
The fruit of jacaranda matures in November; after picking, it should be placed in a windless spot to sun-dry or piled up, then stored after drying and sown in March of the following year. Because jacaranda is native to tropical regions, the temperature at sowing should be around 20°C.
Propagation by Cuttings:
Jacaranda cutting propagation can be done in both spring and autumn; when taking cuttings, choose moderately mature branches as cuttings for a high rooting rate.
Propagation by Tissue Culture:
Tissue culture is also relatively easy; some scientific research institutions in China have used the stem tips and stem segments of seedlings as explants and propagated a large number of test-tube plantlets.
Jacaranda Jacaranda mimosifolia Jacaranda Illustrated Guide: How to Grow Jacaranda / How to Propagate Jacaranda
Jacaranda ProfileJacaranda Jacaranda mimosifolia
How to Grow Jacaranda and Points to Note: An Introduction to Jacaranda
It blooms from late spring to early autumn, and its leaves all fall when it flowers. The capsule is woody, ovoid, slightly flattened, light brown, about 5 cm in diameter, and the seeds are small and winged. The wood is dark brown.
The jacaranda tree can grow to 5 to 15 m tall. The bark is thin and grayish brown. When young the bark is smooth, and in maturity it becomes finely scaly. The branches are slender and crooked, light reddish brown. It blooms from spring to early summer, with a flowering period of two months. The flowers are 5 cm long and form spikes about 30 cm long. After flowering, seed pods form, about 5 cm in diameter, containing many small black flat winged seeds.
The Morphological Characteristics of Jacaranda
Jacaranda is a deciduous tree. Its crown is tall, 12-15 m high and up to 20 m at most. The bipinnately compound leaves are opposite and large, usually with more than 15 pairs of pinnae, and each pinna has 10-24 pairs of leaflets, pinnate, closely set. The leaflets are long elliptic, about 1 cm long, entire, with a sharp apex and slightly covered with fine soft hairs. The panicle is terminal or axillary, the flowers bell-shaped, the corolla two-lipped and 5-lobed, about 5 cm long, blue-purple, with didynamous stamens.
The Ecological Habits of Jacaranda
It prefers a warm climate and is best planted in a sunny location. It is not demanding about soil conditions and grows well in ordinary neutral and slightly acidic soil.
The Distribution Range of Jacaranda
Overseas distribution: Brazil; Bolivia; Argentina
Domestic distribution: Guangdong; Hainan; Guangxi; Fujian; Yunnan
[Common domestic locations] Xichang: in Xichang City, the seat of the Liangshan Prefecture in Sichuan, jacaranda can be seen used for street landscaping, and there are also many on the North Campus of Xichang College, a garden-style campus, and along Hangtian North Road (the road where the Tengyunlou Hotel, formerly the Weixing Hotel, is located). During the flowering period they are very beautiful, distributed on both sides of the Administrative Building, the Pomegranate Garden and beside the Garden Park, attracting many students and tourists to come and see them. It has now been introduced and cultivated artificially.
The Uses and Purposes of Jacaranda: Timber
Jacaranda wood is grayish white, with straight grain, relatively soft, and free of knots. It dries easily and is often used while still wet for woodturning and carving bowls. The wood is relatively soft and is a good material for making carved wooden handicrafts.
The Landscape Uses of Jacaranda
This species is a beautiful tree valued for its foliage and flowers. It is widely planted as a street tree, shade tree and landscape tree in tropical and warm subtropical regions of the world. It is cultivated in South China. The wood can be made into furniture.
It blooms once each in summer and autumn every year, and at full bloom the whole tree is covered with purple-blue flowers, very elegant and delicate. Especially in the tropics, tree species with blue flowers are relatively rare, so jacaranda is truly a rare and precious woody flowering plant.
Cultivation Techniques for Jacaranda: Cultivation Management
Temperature and Light
Jacaranda is native to tropical America and prefers a warm, humid, sunny environment; it is not tolerant of frost or snow. The suitable growth temperature is 22 to 30°C. If the winter temperature is below 15°C, growth stops, and if it is below 3 to 5°C there is cold damage; if the summer temperature is above 32°C, growth is also inhibited. It likes light and can tolerate partial shade.
Soil and Fertilization
It prefers fertile, moist sandy loam or loam. When planting, apply sufficient base fertilizer; after it becomes established, topdressing is needed once each in spring and autumn, and pruning and shaping should be done once every early spring; aged plants need heavy pruning. When grown in pots, the trunk can be cut back or grafted for dwarfing, and watering and nitrogen fertilizer application should be controlled.
The Propagation Methods of Jacaranda
Jacaranda is propagated by sowing, cuttings, tissue culture and other methods. Its capsules mature in November; after harvesting, they are placed in a windless spot to sun-dry or piled up, then stored after drying until March of the following year, and sown when the temperature is around 20°C, but the seed germination rate is only about 5%. Jacaranda cutting propagation can be carried out in both spring and autumn; choose moderately mature branches as cuttings for a high rooting rate. Tissue culture of jacaranda is also relatively easy; some scientific research institutions in China have used the stem tips and stem segments of seedlings as explants and propagated a large number of test-tube plantlets.
Pest and Disease Control for Jacaranda
Jacaranda has relatively few diseases. The main pest is the longhorn beetle. If reddish-brown frass is found at the base of the trunk, a small knife can be used to pry open the bark to catch the larvae; alternatively, before the adults emerge, apply a mixture of 10 parts quicklime, 1 part sulfur and salt below 80 cm on the trunk base to prevent the adults from laying eggs.
The Cultural Background of Jacaranda: Modern Culture
Pretoria, the administrative capital of South Africa, has the reputation of "Jacaranda City" (English: Jacaranda City; Afrikaans: Jakarandastad), because whenever spring comes, the many jacarandas in the city bloom and turn the whole city blue. The name "Jacaranda City" often appears in Afrikaans songs.
In Australia there is a Christmas song about jacaranda, Christmas where gum trees grow. This is because the summer when jacaranda blooms is exactly Christmas in Australia - just as the song says, "when the bloom of the Jacaranda tree is here, Christmas time is near..." In Grafton, Australia, the Jacaranda Festival is held every year from the second-to-last weekend of October to the first weekend of November.
In Argentina, the writer Alejandro Dolina recounted a legend about a huge jacarandá tree in his book Crónicas del ángel Gris (Chronicles of the Gray Angel). The tree is located in Plaza Flores (Flores Square) in Buenos Aires and can play tango tunes on request. The writer and musician María Elena Walsh dedicated one of her songs, titled "Canción del Jacarandá", to this tree.
British singer Steve Tilson praised this beautiful tree, which he encountered in Australia, in his song "Jacaranda". (This song is track 11 on his album Ziggurat released in 2008.)
The Flower Language of Jacaranda
(1) Representing tranquility, profundity and melancholy.
(2) Waiting for love in despair.
(3) Profound, cool, quiet and open
(4) Cold, lifeless, steady, deep, elegantly refined
(5) Waiting for love in despair, honorable even in defeat.
Jacaranda Pictures