Potted Cultivation Methods and Care Precautions for Ixora (with Pictures)
Ixora is an important potted woody flower, also known as Yingdan, Xiandan flower, and Hundred-day red, etc. It is a shrub plant of the genus Ixora in the family Rubiaceae. People in southern Guangxi province in China habitually call it water hydrangea. It is suitable for courtyards, hotels, and scenic areas, with staggered heights and bright flower colors, offering an excellent landscape effect. It is widely used for potted ornamental display. Let us take a look together at the cultivation methods and precautions for Ixora!
Growth Habits of Ixora
Ixora is relatively suited to high-temperature and sunny environments. It prefers humid and hot climates and is not tolerant of low temperatures. The suitable growth temperature is 23-32°C. When the temperature drops below 20°C, its growth weakens and flowering decreases noticeably, but if there is sufficient sunlight, it will still produce a certain number of flower buds. When the temperature drops below 10°C, its physiological activity decreases and growth slows. When the temperature drops below 0°C, frost damage will occur. It prefers acidic soil, and the most suitable soil pH is 5-5.5. Soil with good drainage and good fertilizer retention will allow it to grow well. The best cultivation soil is sandy loam or humus loam rich in organic matter. If the soil is on the alkaline side, growth will be hindered and development will be poor.
Propagation Methods of Ixora
1. Cuttings: For Ixora cutting propagation, it is best to do it in June-July. Select semi-mature branches 10-15 cm long and insert them into a sand bed. The suitable temperature is 24-30°C. Roots will form 40-50 days after insertion. Soaking the cuttings in a 0.5% indolebutyric acid solution for 3-5 seconds can shorten the rooting period.
2. Sowing: Collect seeds in winter for Ixora and sow in spring. The suitable germination temperature is 22-24°C. They will germinate 20-25 days after sowing. When 3-4 pairs of true leaves have grown, the seedlings can be transplanted into 8 cm pots.
3. Layering: For Ixora layering propagation, choose plants with many and dense branches. Perform ring-barking at 20 cm from the top, wrap with peat and plastic film, and they will heal and root in more than 2 months.
Cultivation Methods for Ixora
1. Soil: For Ixora cultivation, the best soil is fertile, loose, and well-drained acidic sandy loam. For potting, use a mixed soil of culture soil, peat soil, and coarse sand, with a pH of 5-5.5 being suitable.
2. Watering: Ixora prefers moisture and fears dryness. During the stem and leaf growth period, it needs sufficient water. Keeping the pot soil moist is beneficial for shoot sprouting and leaf growth. However, if it remains too wet for a long time, it can easily cause partial root rot, affecting growth and flowering. If the soil is too dry or alternates between dry and wet, and water supply is not timely, leaf drop will occur.
3. Sunlight: Ixora needs sufficient sunlight, especially during the stem and leaf growth period. Under sufficient sunlight, the leaves are emerald green and glossy, which is beneficial for inflorescence formation, neat flowering, and vivid flower colors. It can also grow in semi-shaded environments, but the leaves will be pale green, lack luster, produce fewer flowers, and the flower colors will be lighter. However, proper shading during strong summer light can extend the flower-viewing period.
4. Temperature: The suitable growth temperature for Ixora is 15-25°C, from March to September it is 24-30°C, and from September to the following March it is 13-18°C. The winter temperature should not be lower than 0°C, as too low a temperature makes it susceptible to frost damage. On the contrary, Ixora is tolerant of high temperatures and will continue to grow normally above 32°C. Overall, Ixora has relatively strong adaptability to temperature.
5. Fertilizing: During the growth period of Ixora, apply once every half month a liquid fertilizer made by mixing nitrogen, phosphorus, potassium, ferrous sulfate, and horse hoof slices in a ratio of 1:1:1:2:3, adding water, and undergoing decomposition and fermentation.
6. Pruning: Ixora pruning is mostly done after being moved outdoors in spring, mainly to properly thin out the branches to facilitate ventilation and light penetration. In addition, proper pinching during the flowering period can make it produce more buds and flowers.
Cultivation Value of Ixora
1. Ornamental value: Ixora is an important potted woody flower. Its plant shape is beautiful, flowering is dense, flower colors are rich, flower shapes are unique, and it has flowers to appreciate all year round. It is widely used for potted ornamental display and scenic area viewing.
2. Medicinal value: The roots, stems, and leaves of Ixora can all be used as medicine. It has the effects of regulating menstruation, lowering blood pressure, clearing the liver, and relieving pain. It is widely used in the treatment of hypertension, irregular menstruation, and other diseases. It can also treat pulmonary tuberculosis hemoptysis, stomach pain, rheumatic joint pain, and traumatic injuries.
Precautions for Ixora Cultivation
1. After Ixora is moved outdoors in spring, it should be properly pruned to facilitate ventilation and light penetration. Proper pinching during the flowering period can make it produce more buds and flowers. Do not water on rainy days in summer. If it is exposed to rain, promptly pour out the water in the pot to prevent root rot from excessive moisture.
2. In winter, move Ixora indoors to a sunny place. The temperature should not be lower than 0°C. Water about once a week, just enough to keep the soil slightly moist. During high summer temperatures and strong sunlight, shade should be provided, blocking 40-50% of the light.
3. During the flowering period of Ixora, due to poor ventilation and other reasons, aphids and scale insects often cause damage. Attention should be paid to early prevention and control.
4. Ixora can withstand short periods of low temperature around 0°C, but it is not tolerant of frost. Before frost, it should be moved to a sunny balcony for cultivation. If the temperature in autumn and winter is kept above 15°C, when the outdoor temperature drops to 15°C, it should be moved to a sunny place on the balcony for cultivation, which can extend the flowering time.
5. As long as the humidity is suitable and certain light, water, and fertilizer management are ensured, Ixora can bloom all year round. Therefore, if the winter temperature is kept above 15°C, Ixora can still grow slowly. Management can refer to spring, but do not fertilize.
Pest and Disease Control for Ixora
1. Leaf spot disease
[Damage characteristics] Leaf spot disease is caused by Fusarium. The pathogen overwinters on diseased flowers or falls into the soil with diseased leaves, and spreads through wind, rain, or watering the following year.
[Horticultural control] Meet Ixora's growth conditions of liking light, a warm and humid climate, and loose, fertile acidic soil.
[Chemical control] Start spraying at the early stage of the disease. The agents can be 50% thiophanate-methyl · sulfur suspension concentrate at 800 times dilution, or 50% carbendazim wettable powder at 500 times dilution, or 10% antibacterial agent 401 acetic acid at 1000 times dilution.
2. Anthracnose
[Damage characteristics] Anthracnose mainly damages leaves. The pathogen overwinters on diseased parts or diseased leaf residues. When conditions are suitable, it spreads through wind and rain, invading through wounds and causing initial infection.
[Horticultural control] Remove diseased leaves to reduce the source of infection. Keep appropriate spacing between flower pots or plants to ensure good ventilation and light penetration.
[Chemical control] Spray before the disease occurs. The agents can be 1:1:200 Bordeaux mixture, or 50% carbendazim wettable powder plus 75% chlorothalonil wettable powder at 800 times dilution, or 25% antitrac wettable powder at 500 times dilution. Spray the above agents once every 10 days or so, for 3-4 consecutive treatments.
3. Scale insects
[Damage characteristics] Once scale insects occur, the damage is severe. Prevention should be the main approach. Once scale insects are found, timely control should be carried out without delay. Scale insects not only hinder plant growth and trigger other diseases but also affect ornamental value.
[Horticultural control] Prohibit bringing in or taking out seedlings carrying insects. Apply organic fertilizer and compound fertilizer at appropriate times to strengthen seedling vigor and improve insect resistance.
[Chemical control] Apply systemic granular agents to the roots, such as 3% carbofuran granules, etc. The dosage is 0.5-1 gram buried in flower pots within 20 cm in diameter, increased as appropriate for larger pots. The effective period can reach 40-60 days. Spray in time at the peak hatching stage of eggs. The agents can be 40% omethoate emulsifiable concentrate at 1500 times dilution plus 50% menazon emulsifiable concentrate at 1000-1500 times dilution.
[Ixora Pictures] Cultivation Methods and Precautions for Ixora
First of all, if you want to understand the cultivation methods of Ixora, you need to master its growth habits. Only by understanding Ixora thoroughly can you grow it well. Never cultivate and breed it blindly and carelessly. So, let us first start with a rough understanding of Ixora. After understanding it, let us then look at its growing environment, cultivation methods, and precautions.
❀ Morphological Characteristics
Ixora is a relatively short plant. Its shape is very elegant, and its flower colors are also very rich, including red, yellow, orange, white, and bicolor, etc. The plant shape of Ixora is also very beautiful, and the flowers it produces are dense and clustered together very attractively. Ixora is not only a traditional Chinese medicinal potted woody flower but is also the national flower of Myanmar. This flower is very suitable for planting in courtyards and scenic areas, etc., with an excellent landscape effect.
❀ Growth Habits
Ixora likes to grow in high-temperature and sunny environments. It likes humid and hot climates and is not tolerant of low temperatures. The suitable growth temperature is 23-32°C. When the ambient temperature is lower than 20°C, flowering will decrease noticeably; when the temperature is lower than 10°C, its physiological activity decreases and growth slows; when the temperature is lower than 0°C, frost damage will occur. Ixora likes acidic soil with good drainage and good fertilizer retention. If the soil is on the alkaline side, Ixora's growth will be hindered and development will be poor.
❀ Cultivation Methods
· Sowing method
This sowing method requires collecting seeds in winter and sowing in spring. Seeds collected in winter need to be stored well and not be damaged by freezing. After sowing, the suitable germination temperature is 22-24°C. They will germinate 20-25 days after sowing. When 3-4 pairs of true leaves have grown, the seedlings can be transplanted into 8 cm flower pots.
· Layering method
The layering method is to choose many and dense plants, preferably healthy and robust plants, perform ring-barking at 20 cm from the top, wrap separately with plastic film and peat, and they will heal and root in more than 2 months. After rooting, they can be transplanted.
· Cutting method
In spring and summer, select healthy and disease-free young branches 8-12 cm long for cutting, insert them into an acidic sand bed with good permeability. The suitable temperature is 24-30°C. They will root about 40-50 days after insertion.
❀ Precautions
In the process of cultivating Ixora, not only should attention be paid to its growing environment temperature and the acidity and alkalinity of the soil, but also constant attention should be paid to preventing Ixora from being troubled by diseases and pests. Common diseases include leaf spot disease and anthracnose, and the main pests are scale insects and aphids. When diseases and pests occur, timely chemical control and pesticide spraying should be carried out.
Conclusion:In short, Ixora is not that difficult to keep alive. The key is whether the individual is careful. In the process of cultivating Ixora, one must follow the key points of Ixora's growth habits. Never violate them, otherwise the final result will be unsatisfactory.