Lannea coromandelica, also known as the Indian ash tree, is a species of tree in the family Anacardiaceae that grows in South and Southeast Asia, ranging from Sri Lanka to Southern China. It is commonly known as Gurjon tree and is used in plywoods for its excellent termite resistance properties. It most commonly grows in exposed dry woodland environments, where the tree is smaller (up to 10 meters tall) and more crooked. In more humid environments it is a larger spreading tree that can become 20 meters tall. In Sri Lanka Lannea coromandelica often grows on rock outcrops or inselbergs.
Indian ash is well resistant to disease and generally not susceptible to illnesses. As for care, this plant is fairly low maintenance. Planted outdoors, it needs only light watering, and larger specimens typically don't require pruning. Smaller specimens, however, should be pruned after they finish blooming. Indian ash is suitable for anyone with an outdoor area, such as a garden or deck, and doesn't need much gardening experience.
How to keep Lannea Coromandelica.
Light
Indian ash is native to open habitats, such as sunlit meadows and forest edges, which provide abundant light. It performs best in Full Sun but can also tolerate Partial Sun, adapting well to different light conditions.
Water
Indian ash, which comes from dry deciduous forests, is highly adaptable to low moisture environments and demonstrates excellent drought tolerance. To care for it, water the plant every 2-3 weeks, ensuring that the soil drains well to replicate its natural arid conditions. It thrives best when grown outdoors in warmer climates.
Temperature
Indian ash comes from tropical areas, where the climate is generally warm and humid. Consequently it is adapted to high temperatures and moisture. It does not tolerate sudden temperature swings and prefers a steady thermal environment, so avoiding temperature fluctuations indoors is important. It typically cannot withstand cold and needs higher temperatures to grow; if the temperature falls too low the plant may stop growing or even die.
Fertilizer
Fertilizing is essential for caring for Indian ash. Consistent feeding during the growing season maintains the energy for its showy foliage and supports overall growth. Failing to fertilize can lead to unhealthy leaves, reduced ornamental value, and stunted or weak growth that is more prone to breakage.
Pruning
To maintain the health and appearance of Indian ash, it's beneficial to prune it in early spring. This involves removing any dead or diseased branches and thinning out dense areas to improve air circulation. Pruning in this way encourages healthy growth and strengthens the plant's structure, setting it up for a vigorous summer. Additionally, it enhances the tree's overall vitality and aesthetic appeal.
Botanical profile.
- Plant Type
- Tree
- Life Cycle
- Perennial
- Genus
- Lannea
- Family
- Anacardiaceae
- Hardiness Zone
- 9-11
- Mature Height
- 4.88 m to 10.06 m
- Mature Spread
- 7.92 m to 11.89 m
- Leaf Color
- Dark Green, Forest Green
- Leaf Type
- Deciduous
- Flower Color
- Yellow
- Flower Size
- 0.76 cm
- Bloom Time
- Early spring, Mid spring
- Planting Time
- Spring, Summer, Autumn
- Harvest Time
- Early summer, Mid summer
- Native Area
- Nepal, Sri Lanka, India, Malaysia, Indonesia, Cambodia, Vietnam, Myanmar, Bhutan, Bangladesh, Pakistan, Laos, Thailand, China
Other names.
Reader questions.
What's the best way to water my Indian ash plant?
To ensure excellent root development, place a garden hose at the base of the plant instead of directly spraying the leaves. If the leaves are outdoors and exposed to direct sunlight, they will need more watering. You can use bubblers or soaker hoses to moisten the roots - the latter is especially useful for covering the entire garden or bed when adding or removing plants. Remember to drain any excess water and allow the soil to dry before watering again. It's best to water at ground level to prevent diseases. On sunny days, it may be beneficial to spray the entire bush with water. Whether the plant is potted or in the ground, deep watering is preferred over light sprinkling for Indian ash.
What are the sunlight requirements for Indian Ash?
Indian Ash (Lannea coromandelica) thrives in environments that provide ample light, originating from open spaces such as sunny meadows and forest edges. It requires full sun, which means it needs more than 6 hours of sunlight daily, but can also tolerate partial sun, about 3-6 hours of sunlight. It's essential to watch how sunlight moves through your garden and choose spots that offer a good balance of light and shade, guaranteeing the plants' well-being under different sunlight conditions.
What is Indian ash?
Indian ash, scientifically known as Lannea coromandelica, is a plant species recognized by its botanical name but lacks additional details on its essentials and symptoms in the provided data. Despite the limited information, its recognition in botanical circles underlines its significance in certain contexts, possibly including traditional medicine, industrial uses, or as part of various ecosystems.
What should I do if I give too much or too little water to Indian ash?
An overwatered Indian ash can display signs such as yellow leaves, leaf drop, wilting, and a dull, unhealthy appearance with mushy stems. Adjusting watering schedules promptly when these signs emerge is important. Wilting can also indicate under watering, characterized by crispy and dry leaves, while overwatered plants will have soft, wilted leaves. When the soil is dry and simply watering is insufficient, a thorough watering is necessary. Sufficient water will help the Indian ash recover, but the plant may still show dryness and yellowing leaves for a few days due to root damage. Once the plant returns to normal, the yellowing of the leaves will stop. When growing Indian ash indoors, always monitor moisture levels in the pot to avoid overwatering. Look out for signs of black spots, and if present, allow the soil to dry out by refraining from watering for a few days. Overwatering can lead to root rot, which may require transferring the plant into a different pot, especially if discolored and slimy roots are observed. Take measures to prevent root rot by avoiding excessively soggy soil. When planting Indian ash outdoors, dig a little deeper and check the soil with your fingers. If it feels too dry, it may indicate underwatering, and adequate watering is necessary to aid in the plant's recovery.
How can artificial lighting be used for Indian Ash?
When natural sunlight is insufficient, especially during winter or in less sunny areas, artificial lighting becomes crucial for the growth of Indian Ash. Adequate lighting promotes faster, healthier growth. LED lights are recommended because they can be adjusted to provide specific wavelengths needed by the plants. Full sun plants require 30-50W per square foot, partial sun plants need 20-30W per square foot, and full shade plants should have 10-20W per square foot. The light source should be placed 12-36 inches above the plant to mimic natural sunlight, and most plants need 8-12 hours of light per day.
How frequently should I water my Indian ash plant?
The Indian ash plant prefers deep and infrequent watering, particularly when it is planted in pots. Since the water storage in flower pots is limited and the soil dries out faster, it is recommended to soak the plant in a gallon of water each time. In cold regions, watering is necessary every 3 to 5 days. It's best to water the plant early in the morning when the soil is dry, whether it is kept indoors or outdoors. To determine if watering is needed, check the soil inside the pot and if the top 2-3 inches are dry, it's time for a full watering. On hot days, check the moisture daily as the heat can quickly dry out the soil. If you have a garden, irrigation is also necessary. In a hot climate, it is advisable to water the plant once a week. Only water when about 2 to 3 inches of soil become too dry, both indoors and outdoors. Be mindful of rainfall; if there is a lot, additional watering may not be needed to avoid root rot. Indian ash plants usually grow during spring and fall. When outdoors, adding mulch about 3 to 4 inches deep can help conserve more water. In sandy soil, which drains faster, more frequent watering is required. Conversely, in clay soil, watering can be less frequent, allowing the plant to dry out for 2-3 days to prevent root rot. Keeping track of watering dates on a calendar can be helpful, especially if you notice the leaves starting to droop, which may indicate that a watering day has been missed.
What are the symptoms of light deficiency in Indian Ash?
Indian Ash may show several symptoms when exposed to suboptimal lighting, including smaller new leaves, leggy or sparse growth, faster leaf drop, slower or no growth, lighter-colored new leaves, and conditions like chlorosis, sunscald, leaf curling, wilting, and leaf scorching. These symptoms indicate the plant's struggle with insufficient sunlight, highlighting the importance of proper light exposure for its health and development.
How much water should I give my Indian ash plant?
1. The Indian ash generally needs about a gallon of water on a regular schedule. 2. For potted plants, water them deeply until you see water dripping from the bottom of the pot. Wait for the soil to dry before watering again. You can use a water calculator or moisture meter to determine how much water you've given your plant in a week. 3. During the flowering period, provide plenty of water but allow the moisture to evaporate afterward to prevent root rot. 4. If Indian ash is planted outdoors and receives adequate rainfall, it may not need additional watering. 5. When Indian ash is young or newly planted, make sure it receives 1-2 inches of rain per week. As it grows, it can rely solely on rainfall. 6. Only water Indian ash during hot weather or when there has been no rainfall for 2-3 weeks. Water it during cooler times of the day to prevent heat damage. Additional watering may be needed during prolonged dry spells.
What are the solutions for light deficiency in Indian Ash?
To address light deficiency in Indian Ash, gradually move plants to sunnier locations to ensure at least 6 hours of direct sunlight daily. For indoor plants, use a south-facing window or consider artificial light if the plant is large. Keep a desk or ceiling lamp on for at least 8 hours daily, or invest in professional grow lights. For outdoor plants, avoid sudden changes in light intensity to prevent sunburn. Reduce obstructions like trees by pruning, and for smaller plants, consider transplanting during their dormant period to a location with more sunlight and good drainage. Note that parts of the plant affected by insufficient light may not recover, but new growth will be healthy with increased light exposure.
Should I change how often I water my Indian ash tree depending on the time of year or the weather?
To care for an Indian ash plant, it is important to consider its watering needs throughout different seasons. During the spring and fall, the soil should be kept moist but not overly saturated. Alternating between dry and moist soil conditions promotes healthy growth. In the summer, hot weather can cause water to evaporate quickly, so additional watering may be necessary if there is a lack of rainfall. During the winter, the plant needs less water as it goes dormant and drops its leaves. Using a well-draining but moisture-retentive soil mixture, such as terracotta, can help with water evaporation. Once the plant begins to leaf out in the spring, you can rely on natural rainfall to provide the necessary moisture. Good drainage is essential for the Indian ash, particularly in pots. Proper watering involves deep soaking once or twice a week, avoiding shallow sprinkles that may encourage fungal growth. However, it is crucial not to let the plant dry out completely, even during dormancy in the fall and winter. Excess water should be avoided, as the Indian ash does not tolerate prolonged sitting in water. Applying mulch can help reduce stress, preserve water, and promote healthy blooms.
What do I need to watch out for when watering my Indian ash tree in different seasons, climates, or during different growth periods?
Indian ash plants primarily rely on rainfall if planted in the ground. However, if there is no rain for 2-3 weeks, you should consider watering the plants deeply. When watering Indian ash in the summer, it is best to do so in the morning to avoid stressing the roots due to a large temperature difference between the water and the root system. It is important to avoid watering the bushes when it is too hot outside. During the spring, when the ground is not too cold, start mulching the plants. The age of the plants is a factor to consider, as newly planted ones often fail to grow due to lack of water. Once the plants are established, reduce the watering schedule. In the fall and winter, especially if there is a water-retaining material in the soil, it is advisable to water the plants less as dry winds can cause them to dry out and the risk of drought increases. Windy seasons usually require more watering. When the Indian ash plants are potted, they tend to dry out faster and thus need more frequent watering. Look out for signs such as decreased blooming and drying leaves, which indicates they need more water. Watering potted plants can be more complex and the frequency varies. Make sure not to leave the potted plants sitting in water and avoid using containers with saucers, bowls, and trays. Overwatering in the fall can result in mottled or yellowish foliage. It is always better to prevent overwatering regardless of the current climate or season. During the flowering months, you may increase the watering frequency, but reduce it once the plants are fully grown. Water them adequately every 3 to 5 days, but avoid following a strict watering schedule. To determine the right time to water, check if the soil is dry by inserting your finger into the pot, or use a moisture meter if you're unsure. Overwatering or underwatering can lead to root rot and cause the plants to die, so be cautious regardless of your climate or season.
Why is it necessary to water my Indian ash?
Watering the Indian ash is important for transporting nutrients from the soil to the rest of the plant. To keep this species healthy, it is crucial to know the appropriate amount of water to give. The watering requirements will vary depending on the weather and soil conditions in your area. While the Indian ash thrives on moist soil, it cannot tolerate waterlogging. Therefore, it is essential to provide enough mulch when planting it in the ground and avoid watering too little. When planting in a pot, it is recommended to water the Indian ash with a full can, ensuring that the water is moist at the base to promote the best blooms. If growing as foliage, watering should be done up to a depth of 10 to 20 inches to support growth. During rainy periods, it is advisable to refrain from watering as the plant can obtain necessary nutrients from the rainwater.