Jacaranda mimosifolia flowering cultivation method

Abstract

The invention discloses a Jacaranda mimosifolia flowering cultivation method, and relates to the technical field of plant cultivation. Comprising the following steps: (1) fertilization management; (2) water management; (3) illumination management; (4) pruning management; (5) temperature management; (6) hormone spraying management; (7) windproof management. A scientific cultivation management technology is adopted, flowering conditions of the albizia falcata in different growth environments are optimized, the flowering rate is increased, the stability of the flowering phase is ensured, and the ornamental value of the albizia falcata is enhanced.

Description

Technical Field

[0001] The present invention relates to the technical field of plant cultivation, and more specifically to a method for cultivating the flowering of Jacaranda mimosifolia. Background Art

[0002] Jacaranda mimosifolia belongs to the genus Jacaranda of the family Bignoniaceae and is an important garden ornamental tree species. Its flower color is blue-violet, the tree shape is beautiful, and its ecological adaptability is relatively strong, and it is widely used in urban greening and landscape construction. This tree species is native to South America and has been successfully introduced in southern regions of China, such as Guangdong, Guangxi, Yunnan, Fujian, Hainan and other places.

[0003] The flowering of Jacaranda mimosifolia is affected by various factors, including temperature, light, water and nutrient status. Generally, this tree species needs to grow for many years before it can flower. In some introduced regions, due to differences in climate conditions, soil environment and management measures, there are large variations in flowering time, flower quantity and stability, and even the flowering period is postponed or it does not flower. This to a certain extent limits its popularization and application and affects its ornamental value.

[0004] At present, there is little research on the regulation technology for the flowering of Jacaranda mimosifolia, mainly relying on traditional measures such as pruning, water and fertilizer management. There is still a lack of scientific and efficient methods to accurately regulate the flowering time and flower quantity. In addition, existing research has shown that plant hormones (such as gibberellin, cytokinin, etc.), mineral nutrition (such as phosphorus, potassium fertilizers) and environmental regulation (such as drought stress, photoperiod regulation) have a certain promoting effect on the flower bud differentiation and flowering of Jacaranda mimosifolia, but there is no systematic technical system and the application mode is not perfect either.

[0005] Therefore, it is an urgent problem for those skilled in the art to provide a method for cultivating the flowering of Jacaranda mimosifolia, which realizes the accurate regulation of the flowering period and improves the flowering rate and consistency by optimizing hormone treatment, nutrient regulation and environmental management. Summary of the Invention

[0006] In view of this, the present invention provides a method for cultivating the flowering of Jacaranda mimosifolia.

[0007] In order to achieve the above object, the present invention adopts the following technical scheme:

[0008] A method for cultivating the flowering of Jacaranda mimosifolia, comprising the following steps:

[0009] (1) Fertilization management: Plant Jacaranda mimosifolia seedlings in neutral or slightly acidic low-nitrogen soil;

[0010] It grows and flowers best in low-nitrogen soil. Excessive application of nitrogen fertilizer may cause poor flowering or non-flowering;

[0011] After the jacaranda seedlings reach one year old, use No. 1 controlled-release compound fertilizer with an NPK element ratio of 20:20:20, and fertilize twice a year in spring and autumn. After the seedlings reach three years old, use No. 2 controlled-release compound fertilizer with an NPK element ratio of 10:30:20, and fertilize twice a year in spring and autumn to promote the early flowering of jacaranda;

[0012] The fertilization amount is calculated according to the trunk diameter, and 0.3 catties of fertilizer are used for every 1 cm of trunk diameter;

[0013] (2) Water management: When the precipitation reaches 20 to 50 millimeters per week during the growth period of jacaranda, no additional watering is required. During the flowering period, avoid watering and drain immediately; Jacaranda often blooms more during drought and grows better in sandy and well-drained soil;

[0014] (3) Light management: The planting location of jacaranda needs to receive ≥6 hours of sunlight per day;

[0015] (4) Pruning management: Cut off dead or damaged branches, and cut off redundant and crowded branches to enhance air circulation; The best pruning period is at the end of winter or early spring to coincide with the plant's dormancy period and stimulate healthy growth; Pruning can reduce the risk of diseases and promote more vigorous flowering;

[0016] (5) Temperature management: When the temperature is ≤3°C, it is necessary to cover with a film; When the temperature is ≥35°C, it is necessary to water abundantly and provide shade;

[0017] Jacaranda shows significant tolerance to temperature changes; It can withstand low temperatures as low as -5°C and high temperatures as high as 43°C; This adaptability means that minimal protective measures are required in a mild climate;

[0018] (6) Hormone spraying management: When the tree age reaches 2 - 3 years old, flower induction is carried out, and gibberellin or cytokinin at 200 ppm is used for foliar spraying or soil application treatment;

[0019] (7) Wind protection management: The salty sea wind can damage jacaranda and inhibit flowering; Planting jacaranda in places that are not exposed to the sea wind as much as possible can help it bloom.

[0020] Furthermore, when the jacaranda seedlings described in step (1) are grafted seedlings, they can bloom earlier, while it takes longer for seedling-grown plants to bloom.

[0021] Furthermore, in the low-nitrogen soil described in step (1), the total nitrogen content is less than 0.2%, and the pH value is 6 to 7.5; Soil testing is regularly carried out every 2 - 3 years to determine the nutrient content and pH value of the existing soil.

[0022] Furthermore, in step (1), dig trenches around the jacaranda cultivation field to prevent the fertilizer from nearby fields from running off into the cultivation field and inhibiting flowering.

[0023] Furthermore, if the flowering is not good after applying the controlled-release compound fertilizer No. 2 in step (1), the controlled-release compound fertilizer No. 3 with an NPK element ratio of 9:40:25 can be used in the following year, and then switched back to the controlled-release compound fertilizer No. 2 in the second year after the flowering becomes normal.

[0024] Furthermore, in step (2), water is poured around the drip line of the tree crown, not at the bottom of the tree trunk; drainage ditches should be dug during planting, and paying attention to drainage is a powerful measure to ensure the flowering of Jacaranda mimosifolia.

[0025] Furthermore, in step (3), when transplanting Jacaranda mimosifolia, try not to plant it in shady places.

[0026] Furthermore, in step (4), sharp and disinfected tools must be used during pruning to avoid infection.

[0027] As can be seen from the above technical solutions, compared with the prior art, the beneficial effects of the present invention are as follows:

[0028] The present invention adopts scientific cultivation management techniques to optimize the flowering conditions of Jacaranda mimosifolia in different growth environments, improve the flowering rate, ensure the stability of the flowering period, and enhance its ornamental value. It is applicable to the planting management of Jacaranda mimosifolia in various regions and soil types, and has great potential for popularization and application. By improving the flowering effect, its application value in urban greening, landscape architecture and nursery stock industry is enhanced, further promoting the development of the industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts.

[0030] Figure 1 The drawings are of Jacaranda mimosifolia in the experimental group of Embodiment 1 of the present invention;

[0031] Figure 2 The drawings are of Jacaranda mimosifolia in the control group of Embodiment 1 of the present invention;

[0032] Figure 3 The drawings are of Jacaranda mimosifolia before treatment in Embodiment 2 of the present invention;

[0033] Figure 4 The drawings are of Jacaranda mimosifolia after treatment in Embodiment 2 of the present invention;

[0034] Figure 5 The drawings are of Jacaranda mimosifolia in the experimental group of Embodiment 3 of the present invention;

[0035] Figure 6The accompanying drawing shows Jacaranda mimosifolia in the control group of Embodiment 3 of the present invention;

[0036] Figure 7 The accompanying drawing shows Jacaranda mimosifolia in the experimental group of Embodiment 4 of the present invention;

[0037] Figure 8 The accompanying drawing shows Jacaranda mimosifolia in the control group of Embodiment 4 of the present invention. Detailed implementation manners

[0038] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0039] Embodiment 1

[0040] Zhanjiang, Guangdong;

[0041] Experimental group:

[0042] 1. Fertilization management

[0043] Jacaranda mimosifolia is suitable for growing in neutral or slightly acidic soil with total nitrogen content below 0.2% and pH 6.0 - 7.5. Excessive nitrogen application is likely to cause excessive vegetative growth and inhibit flower bud formation. Therefore, fertilization management needs to be precisely regulated according to the growth stage.

[0044] (1) Soil testing

[0045] Conduct soil nutrient and pH tests every 2 - 3 years. It is found that the pH value of the soil with long-term nitrogen fertilizer application drops below 4.5, and the total nitrogen content is between 1.4 - 1.95 (g / kg), resulting in yellowing of some Jacaranda mimosifolia leaves and a decrease in the number of flowers. After adjusting the fertilization plan, the growth state and flower quantity of the trees have been significantly improved.

[0046] (2) Fertilization plan

[0047] For 1 - 2-year-old seedlings: Apply 1st controlled-release compound fertilizer with an NPK element ratio of 20 - 20 - 20 (Flower More 1st controlled-release fertilizer, product number: 23 - 14216823 - 925350, manufacturer: Scotts, USA) once in spring and autumn each year, and apply 150 - 500 g per seedling to promote healthy growth.

[0048] For trees over 3 years old: Switch to the No. 2 controlled-release compound fertilizer with an NPK element ratio of 10:30:20 (Flower Power No. 2 controlled-release fertilizer, product number: 22-278645422-715712, manufacturer: Scotts, USA). Apply it once in spring and once in autumn every year, 600 - 1000 g per tree, to promote flower bud formation.

[0049] Poor flowering: If the number of flowers is small for two consecutive years, additional application of the No. 3 controlled-release compound fertilizer with an NPK ratio of 9:40:25 (Flower Power No. 15 controlled-release fertilizer, product number: 23-18482623-946984, manufacturer: Scotts, USA) can be made in spring, 1000 - 1500 g per tree, to increase the flowering rate.

[0050] Fertilizer application rate: When the trunk diameter reaches over 7 cm, an additional 150 g of fertilizer is added for every 1 cm increase in diameter.

[0051] (3) Fertilization method

[0052] Hole application method: For older trees, dig 4 - 6 fertilization holes (20 cm deep) around the roots and evenly bury the fertilizer to improve fertilizer efficiency.

[0053] 2. Water management

[0054] Jacaranda mimosifolia has relatively strong drought tolerance, and moderate drought can actually promote flowering. Therefore, water management needs to be regulated in combination with the growth cycle.

[0055] (1) Watering frequency

[0056] Growth period (spring): If the weekly precipitation reaches 20 - 50 mm, no additional watering is required; if the precipitation is insufficient, water is supplemented 3 times a week, 5 - 10 L per plant each time.

[0057] Flowering period (summer to autumn): Reduce watering. Moderate drought helps promote flower bud differentiation. For example, in a test area in Nanning, Guangxi, after entering the dry season in October, the flowering amount of Jacaranda mimosifolia increased significantly.

[0058] (2) Watering method

[0059] Drip irrigation: Use a drip irrigation system. Install 3 drippers per tree and irrigate for 2 hours each time to reduce water evaporation and improve utilization rate. (Furrow irrigation: In sandy soil areas such as Haikou, Hainan, furrow irrigation is recommended to reduce water loss and improve the water holding capacity of the soil.)

[0060] 3. Light management

[0061] Jacaranda mimosifolia is a strongly positive plant. Insufficient sunlight will lead to excessive growth of branches and leaves and reduced flowering.

[0062] Example: In Zhanjiang, Guangdong, after being transplanted to an area with insufficient sunlight, there was no obvious flowering for two consecutive years. After being adjusted to a full sunlight environment, the flowering amount increased significantly in the following year.

[0063] Transplanting suggestion: Avoid planting in places shaded by tall buildings or trees, and ensure that it receives at least 6 hours of direct sunlight every day.

[0064] 4. Pruning management

[0065] Reasonable pruning can reduce diseases, improve ventilation and light transmission, and increase the flowering rate.

[0066] (1) Pruning time

[0067] Optimal pruning period: Late winter or early spring (January - March), to avoid affecting flower bud differentiation.

[0068] (2) Pruning methods

[0069] Thinning out: Remove diseased, withered, crossing, and overcrowded branches to improve light and air permeability.

[0070] Heading back: Appropriately shorten the branches to control the tree shape and improve the efficiency of nutrient supply.

[0071] 5. Temperature management

[0072] Jacaranda mimosifolia can tolerate temperatures from -5°C to 43°C, but extreme weather may affect its normal flowering.

[0073] Low temperature protection: When the temperature drops below 3°C, the tree trunk can be wrapped with non-woven fabric, and straw can be covered at the roots for heat preservation.

[0074] High temperature protection: When the temperature exceeds 35°C, the amount of watering should be increased appropriately, and a sunshade net should be set up to prevent leaf burns.

[0075] 6. Hormone spraying management

[0076] Applying an appropriate amount of plant growth regulators can promote flower bud differentiation of Jacaranda mimosifolia and increase the flowering rate.

[0077] Example: In Zhanjiang, Guangdong, spraying 200 ppm gibberellin (GA 3 ) on 3-year-old Jacaranda mimosifolia advanced flowering by 30 days compared with the control group, and the flower amount increased by 25%.

[0078] (1) Application method

[0079] Foliar spraying: During the vigorous growth period in spring, spray 200 ppm gibberellin (GA) or cytokinin (CK) once every 15 days for 2 - 3 consecutive times.

[0080] Soil application: For each tree, 500 mL of 100 ppm gibberellin (GA) or cytokinin (CK) solution is drip-fed at the roots to promote root absorption, with the same frequency as above.

[0081] 7. Windbreak management

[0082] Jacaranda is sensitive to the salty sea breeze, especially in coastal areas. Affected by the sea breeze for a long time, it is prone to poor growth and reduced flowering. Inland areas do not require special treatment.

[0083] Example: In Zhanjiang, Guangdong, after setting up a windbreak (such as Casuarina equisetifolia), the survival rate and flowering rate of Jacaranda have both increased.

[0084] (1) Windbreak measures

[0085] Select a sheltered location: When planting in coastal areas, it is necessary to give priority to choosing a sheltered environment for planting, such as the leeward side of a building. Plant windbreaks: In coastal areas, windbreaks can be planted in combination, such as Casuarina equisetifolia and Melaleuca leucadendra, etc., to reduce the impact of wind damage.

[0086] Summary

[0087] Figure 1 The results show that through the above scientific management measures, including reasonable fertilization, water regulation, light management, pruning, temperature regulation, hormone treatment and windbreak management, the flowering of Jacaranda can be effectively promoted, the stability of the flowering period can be improved, and technical support can be provided for landscaping and landscape application.

[0088] Control group (conventional management):

[0089] Managed according to the traditional conventional maintenance method, including:

[0090] Fertilization management: Use the slow-release fertilizer of Flower More No. 1 with an NPK ratio of 20:20:20, twice a year in spring and autumn, and the fertilization amount per plant is 1 catty of fertilizer.

[0091] Water management: When the weekly precipitation reaches 20 - 50 mm during the growth period, no additional watering is carried out. Watering is reduced during the flowering period, but strict drainage measures are not taken.

[0092] Light management: Select an area with good light conditions for planting, and the sunshine duration ≥ 6 hours.

[0093] Pruning management: Only dead branches and cross branches are cut off at the end of winter or early spring, and no branch thinning treatment is carried out.

[0094] Temperature management: Cover with a film to keep warm at low temperatures (≤ 3℃), and increase the amount of watering and take sunshade measures at high temperatures (≥ 35℃).

[0095] 3. Observation indicators

[0096] Record the number of flowers in bloom, the length of the flowering period, the color of the flowers, and the growth status of the plants.

[0097] 4. Result Analysis

[0098] The overall growth of the plants in the experimental group was excellent, the number of flower buds increased significantly, the number of flowers in bloom increased by about 30% - 40% compared with the control group, the flowering period was extended by about 10 days, and the flower color was bright.

[0099] Summary

[0100] Figure 2 The results showed that the plants in the control group grew normally, but the number of flowers in bloom was small, some plants did not bloom, and the flowering period was short.

[0101] Example 2

[0102] Zhanjiang, Guangdong;

[0103] In view of the situation that the number of flowers in bloom of Jacaranda mimosifolia has been small for two consecutive years, the flowering performance was improved through reasonable fertilization management. The steps other than those recorded in the example are the same as those in Example 1.

[0104] 1. Test Object

[0105] Select Jacaranda mimosifolia plants with significantly insufficient flower bloom in the past two years (see Figure 3 ).

[0106] 2. Fertilization Time

[0107] Topdressing was carried out during the spring flower bud differentiation period (from early March to mid-April).

[0108] 3. Fertilizer Type

[0109] Apply Flower More No. 15 controlled-release fertilizer (NPK ratio 9:40:25), mainly phosphorus and potassium fertilizers, to promote flower bud differentiation.

[0110] 4. Fertilization Dosage

[0111] According to the diameter at breast height of the tree trunk, each tree was applied with 1000 - 1500 g, and the specific application rate was calculated according to the ratio of 100 - 150 g per centimeter of tree trunk diameter.

[0112] 5. Fertilization Method

[0113] The ring application method was adopted. A circular trench (depth 10 - 15 cm) was dug at the position of the tree crown drip line, the fertilizer was evenly spread into the trench, covered with soil and then watered thoroughly to help the fertilizer dissolve and be absorbed.

[0114] 6. Observation and Record

[0115] Monitor the growth status and the number of flowers of the plants after fertilization. The results show that the flower bud differentiation of the plants treated with this fertilizer increases significantly, and the number of flowers increases by about 30% - 40% compared with the control group, and the flowering effect is significantly improved.

[0116] Figure 4 The results show that by reasonably adding high-phosphorus and potassium controlled-release fertilizers in spring, the flowering rate of Jacaranda can be effectively increased, and the poor flowering phenomenon can be improved.

[0117] Example 3

[0118] Kunming, Yunnan experimental base;

[0119] To promote the flower bud differentiation of Jacaranda and improve the flowering rate, in this example, during the flowering period (from summer to autumn), watering is reduced to create a moderately dry growth environment. The steps other than those described in this example are the same as those in Example 1.

[0120] 1. Test objects

[0121] Select healthy Jacaranda plants with a tree age of over 5 years, and divide them into an experimental group and a control group, with no less than 20 plants in each group.

[0122] 2. Treatment measures

[0123] Experimental group: During the flowering period, according to the local precipitation, reduce the watering frequency and amount to ensure that the soil water content is lower than the conventional management level every week. The specific method is as follows:

[0124] Adjust the irrigation plan, reduce the conventional weekly watering frequency from 3 times to 1 time, and control the amount of each watering at 40% - 50% of the original amount. At the same time, ensure that the irrigation is concentrated in the area of the tree crown drip line to avoid affecting flower bud differentiation due to excessive moisture of the tree roots.

[0125] Control group: Continue to water 3 times a week according to the conventional management method without water regulation and irrigation within the drip line area.

[0126] 3. Data collection and evaluation

[0127] Record the soil moisture content and meteorological data every week;

[0128] Count the flower bud differentiation situation, flowering time and the number of flowers of the two groups of plants, and comprehensively evaluate the flower bud quality and flowering effect.

[0129] 4. Test results

[0130] Figure 5-6 The results show that after two consecutive seasons of experiments, the flower bud differentiation of the experimental group accelerates significantly under moderately dry conditions, and the flowering rate and the number of flowers increase by about 20% - 30% on average compared with the control group, and the flowering period is 57 days earlier than that of the control group.

[0131] This example proves that by reducing watering during the flowering period to create a moderately dry environment, the flower bud differentiation of Jacaranda mimosifolia can be significantly promoted, the flowering effect can be improved, providing a scientific basis for the efficient cultivation of Jacaranda mimosifolia.

[0132] Example 4

[0133] Gaoming Experimental Base in Guangdong;

[0134] Regarding the flowering performance of Jacaranda mimosifolia, by lightly pruning to optimize the tree shape structure, improving the ventilation and light transmission conditions, promoting flower bud differentiation and increasing the number of flowers, the steps other than those recorded in the example are the same as those in Example 1.

[0135] 1. Experimental object

[0136] Select 20 Jacaranda mimosifolia plants with strong growth and a tree age of over 3 years, randomly divided into two groups, with 10 plants in each group.

[0137] 2. Treatment method

[0138] Experimental group (lightly pruned): During the dormant period of the plants (from late winter to early spring, January to March), cut off diseased and withered branches, cross branches, drooping branches and over-dense branches, and retain the branches with good tree shape and uniform distribution. The pruning amount is controlled at 10% - 15% of the total amount of branches and leaves.

[0139] Control group (not pruned): Keep the natural growth state without any pruning.

[0140] 3. Observation indicators

[0141] Continuously observe and record the growth status and the number of flowers of the two groups of plants for 2 years.

[0142] 4. Result analysis

[0143] Figure 7 The results show that the plants in the lightly pruned group grow vigorously, the branches and leaves are evenly distributed, and the number of flower buds increases significantly.

[0144] The number of flowers in the second spring is 35% higher than that in the non-pruned group, the flower color is bright, and the flowering period is extended by about 7 - 10 days.

[0145] Figure 8 The results show that the branches and leaves of the plants in the non-pruned group are dense, the ventilation and light transmission are poor, and some branches do not flower.

[0146] 5. Conclusion

[0147] Light pruning can effectively improve the crown structure of Jacaranda mimosifolia, enhance the ventilation and light transmission, promote flower bud formation and significantly increase the number of flowers. This example proves that scientific pruning management is an important measure to improve the ornamental value and flowering quality of Jacaranda mimosifolia.

[0148] The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for cultivating flowering jacaranda, characterized in that: The following steps are involved: (1) Fertilization management: Jacaranda seedlings are planted in neutral or slightly acidic low-nitrogen soil; When the Jacaranda seedlings are one year old, use No. 1 controlled-release compound fertilizer with an NPK element ratio of 20:20:20, and fertilize twice a year in spring and autumn. When they are three years old, use No. 2 controlled-release compound fertilizer with an NPK element ratio of 10:30:20, and fertilize twice a year in spring and autumn to promote early flowering of Jacaranda seedlings. The amount of fertilizer is calculated based on the trunk diameter, using 0.3 catties of fertilizer for every cm of trunk diameter; (2) Water management: Jacaranda does not need additional watering when it receives 20 to 50 mm of rainfall per week during the growing season. Avoid watering during the flowering period and drain water immediately. (3) Light management: The location where the jacaranda is planted must receive at least 6 hours of sunlight per day; (4) Pruning management: Prune dead or damaged branches and remove excess crowded branches to enhance air circulation; pruning should be done in late winter or early spring to coincide with the plant's dormancy period and stimulate healthy growth; (5) Temperature management: When the temperature is ≤3°C, it needs to be covered with film; when the temperature is ≥35°C, it needs to be adequately watered and shaded; (6) Hormone spraying management: When the tree is 2-3 years old, promote flowering by spraying 200 ppm of gibberellin or cytokinin on the leaves or applying it to the soil; (7) Wind protection management: The Jacaranda planting area should avoid being directly exposed to the sea breeze.

2. The cultivation method according to claim 1, characterized in that The Jacaranda seedlings in step (1) are preferably grafted seedlings.

3. The cultivation method according to claim 1, characterized in that The total nitrogen content of the low-nitrogen soil in step (1) is less than 0.2%, and the pH value is 6 to 7.5; soil testing is regularly carried out every 2-3 years to determine the nutrient content and pH value of the existing soil.

4. The cultivation method according to claim 1, characterized in that Step (1) digging trenches around the Jacaranda cultivation field to prevent fertilizer runoff from nearby fields from entering the cultivation field and inhibiting flowering.

5. The cultivation method according to claim 1, characterized in that: Step (1) If flowering is poor after application of controlled-release compound fertilizer No. 2, controlled-release compound fertilizer No. 3 with an NPK element ratio of 9:40:25 can be used in the next year, and then switched back to controlled-release compound fertilizer No. 2 in the second year after normal flowering.

6. The cultivation method according to claim 1, characterized in that: Step (2) Water around the drip line of the crown, not at the base of the trunk; dig drainage ditches when planting, and pay attention to drainage to ensure that the jacaranda blooms effectively.

7. The cultivation method according to claim 1, characterized in that: Step (3) When transplanting Jacaranda, try not to plant it in a shady place.

8. The cultivation method according to claim 1, characterized in that: Step (4) When pruning, sharp, sterile tools must be used to avoid infection.

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