Ehretia acuminata
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Ehretia acuminata

Kodo Wood · Oboval-leaf ehretia · Brown-cedar · Koda · Silky-ash

Tier 1 Difficulty: easy Water: low Light: full_sun
Temperature
10–35 °C
Soil pH
6–7
Hardiness
Zone 6–9
Click count
301
Observations
45

Description

Source: leafsnap

Ehretia acuminata is a deciduous tree found in Japan, China, Bhutan, Nepal, Laos, Vietnam, New Guinea and Australia. Fossil evidence suggests an ancient Laurasian origin. This group of plants spread to Australia and South America via Africa, when these continents were still joined. Commonly known as Koda in Australia, Ehretia acuminata is a common tree found from near Bega in south east New South Wales to Cape York in far north eastern Australia. The Australian habitat are different forms of rainforest, particularly near the margins or in disturbed areas.

Care Guide

💧 Water

Puna is native to subtropical regions and thrives in moderately humid environments, though it also exhibits drought tolerance. Water it every 2-3 weeks, allowing the soil to partially dry between waterings. It grows well outdoors, adapting to seasonal rainfall and balancing its growth during both wet and dry periods.

FAQ
What is the best way to water my Puna?

To ensure excellent root development, consider placing a garden hose at the base of your plants. It's important to avoid spraying water directly onto the leaves. If your plants are outdoors and exposed to direct sunlight, keep in mind that the leaves will need more watering. To moisten the roots effectively, you can use bubblers or soaker hoses. When adding or removing plants, consider using soaker hoses that cover the entire garden or bed to encourage deep root growth. Afterward, make sure to drain any excess water and wait for the soil to dry before watering again. It's recommended to water at ground level to prevent diseases. On a sunny day, it may be beneficial to spray the entire bush with water. Whether your plant is in a pot or in the ground, remember that Puna prefers deep watering instead of light sprinkling.

What should I do if I give Puna too much or too little water?

Overwatering can have negative effects on Puna plants. It can cause yellowing and dropping of leaves, as well as wilting. Mushy stems and a generally unhealthy appearance are also indicators of overwatering. If you notice these signs, try to adjust your watering schedule. On the other hand, wilting can also be a sign of under watering. In this case, leaves may become dry and crispy. To determine if your plant needs water, check the soil for dryness. If it is dry, give the plant a thorough watering. However, be aware that even after receiving enough water, the Puna may still exhibit dryness and yellowing leaves due to damage to its root system. Once the plant returns to normal, the yellowing of leaves will cease. When keeping Puna plants indoors, be sure to check the moisture levels in the pot. Avoid overwatering and look out for black spots, as they indicate excessive moisture. If black spots are present, allow the soil to dry out by refraining from watering for a few days. Overwatering can result in root rot, which is characterized by discolored and slimy roots. If you notice root rot, consider transferring the plant to a different pot. Always take measures to prevent root rot and avoid excessively soggy soil. When planting Puna outdoors, dig slightly deeper and assess the soil's moisture content. If the soil feels too dry, it may indicate under watering. Provide adequate watering to help the plant recover.

How often do I need to give water to my Puna?

The Puna plant prefers deep, infrequent watering, especially when in pots. Potted plants have limited water storage and the soil dries out quickly. If you live in a cold region, water every 3 to 5 days. Water in the morning when the soil is dry, whether indoors or outdoors. Check the soil moisture by feeling the top 2-3 inches. If dry, give the plant a full watering. On hot days, check moisture daily as the soil can dry out fast. For gardens, water once a week in hot climates. Only water when the top 2-3 inches of soil are dry. Consider rainfall and avoid overwatering to prevent root rot. Puna plants typically grow in spring and fall. Add 3-4 inches of mulch outdoors to conserve water. Sandy soil needs more frequent watering, while clay soil requires less frequent watering to avoid root rot. Mark watering dates on the calendar and watch for drooping leaves as a sign of needing water.

How much water does my Puna need?

The Puna generally needs about a gallon of water on a regular basis. For potted plants, water them deeply until water is dripping out of the bottom, then 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. During the flowering period, provide plenty of water, but allow the moisture to evaporate afterwards to avoid root rot. If Puna is planted outside with sufficient rainfall, it may not need extra watering. When Puna is young or newly planted, ensure it receives 1-2 inches of rain per week. As Puna grows, it can rely solely on rainfall. Only when the weather is extremely hot or there is no rainfall for 2-3 weeks should you consider giving Puna a full watering during the cooler parts of the day to prevent heat damage. Additional watering is necessary during prolonged dry periods.

Should I change how often I water my Puna depending on the time of year or the weather?

The Puna plant needs rainwater to grow, but only needs to be watered if there is persistent dry weather. During the spring and fall, the soil should be kept moist but not soggy, and alternating dry and moist conditions are ideal for growth. In summer, hot weather can cause water to evaporate quickly, so if there is a lack of rainfall, more frequent watering is necessary to keep the soil moist. Generally, less water is needed during the winter when the plant goes dormant. Using well-draining soil like terracotta can help water evaporate quicker during this period. Once the Puna plant begins to leaf out and go dormant, watering can be skipped as it can rely on fall and winter rains to survive. After spring, when the temperature warms up, you can encourage growth and blooming. The Puna plant prefers well-drained soil and good drainage is important, especially in winter. When the plant is in a pot, its root growth is limited, so it should be kept well-watered, especially in summer. Avoid cold and wet roots by providing adequate drainage, particularly during the growing phase. It is best to water the Puna plant deeply once or twice a week, depending on the weather, and avoid shallow sprinkles that only reach the leaves as they can encourage fungal growth and do not reach the roots. Even during dormancy in fall and winter, the plant should not be allowed to dry out completely. It is important to avoid overwatering the plant, as it does not like to sit in water for too long and may die if the soil does not drain well. Additionally, applying mulch can help reduce stress, conserve water, and promote healthy blooms.

☀️ Light Full sun

Puna comes from open environments, such as sunny meadows and forest edges, where plenty of light is available. It thrives in Full Sun but can also tolerate Partial Sun, adapting well to a range of sunlight conditions.

Ideal: Full sun
FAQ
What are the sunlight requirements for Puna?

Puna, scientifically known as Ehretia acuminata, thrives best in full sun conditions, which means it requires more than 6 hours of sunlight daily. However, it can also adapt and grow in partial sun, defined as about 3-6 hours of sunlight a day. When planning your garden, it's crucial to observe how sunlight travels through the space to ensure you place your plants in areas that offer the right balance of light for their needs, ensuring they grow healthy and strong.

What essentials are needed for Puna's growth?

Originating from open environments like sunny meadows and forest edges, Puna is accustomed to ample light and prefers full sun but can tolerate partial sun, showing versatility in different lighting conditions. For indoor plants, adequate lighting is essential, especially when natural sunlight is scarce, like in winter or less sunny spaces. Artificial lighting, such as LED lights, can supplement growth. These lights should be tailored to provide specific wavelengths needed by your plants, with full sun plants requiring 30-50W/sq ft, partial sun plants 20-30W/sq ft, and shade plants 10-20W/sq ft of artificial light. The proper distance (12-36 inches) and duration (8-12 hours per day) of light exposure are also important factors to mimic natural sunlight conditions.

What are some common symptoms of insufficient light in Puna?

Under suboptimal lighting, Puna may show several symptoms. Newer leaves might be smaller, and the plant may exhibit leggy or sparse growth due to longer spaces between leaves or stems, leading to a weak appearance. Early leaf drop can occur as the plant conserves resources for new leaves. Growth can slow down or halt entirely as the plant enters survival mode. Pale or irregularly colored new leaves point to a lack of chlorophyll and essential nutrients, while chlorosis causes leaves to lose their green color, turning them yellow. Sunscald, leaf curling, wilting, and leaf scorching are other symptoms indicating excessive sunlight exposure, which can be just as detrimental as insufficient light.

How can I mitigate symptoms of poor lighting for Puna?

To address lighting issues, gradually increase Puna's sunlight exposure until it receives at least 6 hours of direct light daily, especially for indoor plants. Use south-facing windows and keep curtains open during the day. If moving the plant or providing natural light is challenging, consider artificial lighting solutions like desk lamps or professional grow lights, keeping them on for at least 8 hours a day. For outdoor plants, ensure a gradual adaptation to sunlight to prevent sunburn. Minimize any obstructions, such as pruning trees that block sunlight, and for smaller plants, consider transplanting during the dormant period to a location with ample sunlight and good drainage. Note that parts of the plant already affected might not recover, but new growth will be healthy after adjusting light exposure.

🌡️ Temperature 10–35°C

Puna demonstrates good adaptability to temperature, tolerating higher heat and wide temperature fluctuations. In hot conditions, attention to watering and providing suitable shade is necessary to prevent sunburn. However, Puna is relatively sensitive to low temperatures; although it can tolerate some cold, very low temperatures can cause frost damage.

Ideal temperature: 10–35°C
FAQ
What is Puna's botanical name?

Puna is known botanically as Ehretia acuminata. This classification helps in accurately identifying the plant, distinguishing it from others.

💨 Humidity
Humidity:
🪴 Soil 6-7
Soil pH: 6-7
🌱 Fertilizer

The timing of fertilizing Puna is important. Apply fertilizer starting in early spring and repeat monthly until early summer. Fertilizer promotes attractive blooms and supplies energy during both dormant and active growth periods.

🪴 Pot & Repot
✂️ Pruning

Puna has distinctive foliage and shape. To encourage growth, it is best to prune in early spring, concentrating on removing dead branches, reducing overcrowding, and shaping the plant to allow better air and light circulation. Regular pruning enhances the plant's structure and flowering potential, improving its overall appearance.

🌿 Propagating
🐛 Diseases & pets
☠️ Toxicity

Characteristics

Plant Type
Tree
Life Cycle
Perennial
Genus
Ehretia
Family
Boraginaceae
Hardiness Zone
6-9
Mature Height
14.94 m
Mature Spread
6.1 m to 7.92 m
Leaf Color
Dark Green, Forest Green
Leaf Type
Semi-evergreen
Flower Color
White
Flower Size
0.51 cm
Bloom Time
Mid spring, Late spring
Planting Time
Spring, Summer
Harvest Time
Mid summer, Late summer, Early fall
Native Area
India, Indonesia, Vietnam, Myanmar, Japan, Philippines, Bangladesh, Laos, Pakistan, South Korea, China

Tags (4)

Common Names (7)

en Kodo Wood
en Oboval-leaf ehretia
en Brown-cedar
en Koda
en Silky-ash
en Wild peach
en Kodo tree