Japanese pagoda tree (Styphnolobium japonicum)

Also known as: Scholar tree

The Japanese pagoda tree (*Styphnolobium japonicum*), native to China and Korea, has been cultivated around Buddhist temples in Japan for centuries, despite not being native to the country. It was introduced to France in 1847 by Pierre d’Incarville, a Jesuit priest who traveled to China to offer guidance on cultivating European flowers for the emperor.

Attributes of Japanese pagoda tree

Lifespan

Perennial

Plant Type

Tree

Plant Height

8 m to 20 m

Spread

18 m

Leaf Color

Green

Flower Size

1.2 cm to 1.5 cm

Flower Color

White Yellow Cream

Images of Japanese pagoda tree

Quickly Identify Japanese pagoda tree

Impressive height of 50-75 feet (15-23 meters) with matching width.

Creamy white pea-like flowers in panicles up to 12 inches (30 cm).

Pendulous pods, 3-8 inches (7.6-20.3 cm) long, with 'beads-on-a-string' appearance.

Alternate, pinnately compound leaves with 7-17 ovate to lanceolate leaflets.

Distinctive brown stem with bright lenticels and notable branching pattern.

Scientific Classification of Japanese pagoda tree

Phylum

Vascular plants

Class

Dicotyledons

Order

Legumes, milkworts and allies

Family

Legume

Genus

Styphnolobium

Species

Japanese pagoda tree

Planting and Growing of Japanese pagoda tree

Care Difficulty

Easy

Watering Schedule

Every 2 days

Sunlight Requirements

Full sun

Sunshine Duration

4-10 hours

Ideal Temperature

59-77℉

Soil Type

Potting Mix, Peat Mix

Soil pH

6.5-7.5

Fertilizer Type

Balanced

Pruning Season

Spring, Summer

Pruning Area

Branches, Leaves

Pruning Frequency

2 times a year

Repotting Season

Spring

Pot Type

Plastic, Ceramic

How to Water Japanese pagoda tree?

For each watering, approximately 500 ml of water should be sufficient. The key is to ensure the soil is moist but not waterlogged. It's essential to allow the top inch of soil to dry out between waterings, as over-saturation can harm the roots.

What are the symptoms of an underwatered Japanese pagoda tree? ›

What should I do if my Japanese pagoda tree is not getting enough water? ›

What are the symptoms of an overwatered Japanese pagoda tree? ›

How to save an overwatered Japanese pagoda tree? ›

What Are the Sunlight Requirements for Japanese pagoda tree?

Sunlight Requirements: Full sun, Partial sun

Duration of light: 6-8 hours daily

This plant flourishes best in environments offering full sun or partial sun conditions. Ideal exposure fosters healthy, vibrant growth and enhances the plant's flowering capabilities, making it an excellent choice for ornamental planting in well-lit gardens.

How much sun does Styphnolobium japonicum need? ›

Solutions for ideal sunlight exposure ›

Benefits of ideal lighting conditions ›

What Is the Ideal Temperature Range for Japanese pagoda tree?

Ideal Temperature: 59 ~ 77℉

For Styphnolobium japonicum, the ideal growth temperature range is between 59°F and 77°F. Within this range, the plant experiences optimal photosynthesis rates and healthy development. Consistent temperatures in this range ensure the plant's foliage remains vibrant and its overall structure robust. Maintaining this temperature involves considering factors such as local climate, time of year, and whether the plant is indoors or outdoors.

What Soil is Best for Japanese pagoda tree?

Soil type: Loam, Sandy loam

Soil PH: 6.5 ~ 7.5

Styphnolobium japonicum thrives best in well-drained soil which prevents waterlogging. This condition ensures the roots receive enough oxygen, promoting robust growth and preventing root rot. This plant benefits from soil rich in organic nutrients to support its growth and flowering. Nutrient-rich soil provides essential elements that boost plant vitality and enhance bloom quality. Having soil with good moisture retention is crucial for Styphnolobium japonicum, especially in areas with low rainfall. It allows the plant to access water consistently, aiding sustained growth.

How to Fertilize Japanese pagoda tree?

Fertilizer type: Balanced

Styphnolobium japonicum, commonly known as the Japanese pagoda tree, requires moderate feeding. An application of a balanced fertilizer, such as 10-10-10 or 20-20-20, is recommended. During its active growing season, apply approximately 0.1 pounds per square foot of soil. It's important to evenly distribute the fertilizer to avoid nutrient hot spots that may harm the roots.

How to Prune Japanese pagoda tree?

Pruning Time: Spring, Summer

Start by evaluating the tree's overall shape and decide how much to prune. Use sharp, sterilized pruning shears to make clean cuts. Remove any dead, diseased, or damaged branches first. Next, thin out crowded areas to allow better air circulation and sunlight penetration. If necessary, trim branches to maintain the desired shape of the tree, but avoid excessive pruning to prevent stress on the plant. After pruning, apply a suitable fungicide to prevent diseases from entering through the cuts. Water the plant adequately, especially during dry periods. Monitor the plant regularly for any signs of stress or pests, and take appropriate action if needed. Use mulch around the base to retain moisture and regulate soil temperature, promoting a healthier growth environment for the tree.

How to Propagate Japanese pagoda tree plant?

Propagate Time: Spring, Early spring

Collect seeds from mature pods of Styphnolobium japonicum in the fall. Ensure the pods are fully brown and dry before harvesting to maximize seed viability.

Prepare a growing medium by mixing equal parts of coarse sand, peat moss, and perlite. This provides adequate drainage and moisture retention for seed germination.

Select healthy branches during early spring. Cut about 10-15 cm below a leaf node. Remove the lower leaves, leaving a few at the top, and ensure the cutting is disease-free.

How to Repot Japanese pagoda tree plant?

Repotting frequency: Every 2-3 years

Styphnolobium japonicum should be repotted when you notice roots overtaking the pot's drainage holes, the plant seems to be growing slower than expected, or the soil quality has noticeably deteriorated. These signals suggest that your plant is outgrowing its current accommodations, and repotting can offer it the fresh space and nutrients it requires for healthy growth.

Select a pot that is slightly larger than the current one, preferably 2 inches wider in diameter. Ensure that the pot provides adequate drainage to prevent waterlogging, as this ensures the roots remain healthy and nutrient uptake is efficient. Using a pot with good drainage holes also prevents root rot, safeguarding your plant’s well-being.

Choose a well-draining loamy soil mix with a blend of organic matter. This type of soil allows excess water to escape while retaining necessary moisture, supporting healthy root development. The inclusion of organic material in the soil mix also provides essential nutrients needed for the thriving growth of Styphnolobium japonicum.

Toxicity of Japanese pagoda tree

Is Japanese pagoda tree toxic to humans?

The Japanese pagoda tree presents a potential toxic hazard if ingested by humans. Although the effects are generally mild, they can lead to a coma in severe cases. The adverse reactions are likely attributed to the alkaloids found within the fruit. Symptoms resulting from the consumption of these fruits may encompass vomiting, diarrhea, hallucinations, and delirium, with the more critical symptoms including a coma. Given their popularity in parks and along streets as decorative trees, the fallen fruits may be unknowingly collected and consumed by children, who may not be aware of the associated toxicity.

Is Japanese pagoda tree toxic to cat?

The Japanese pagoda tree presents a moderate toxicity risk to felines. Should a cat ingest the seeds of the Japanese pagoda tree, it could suffer physical distress or exhibit signs of illness, as these are the harmful components of the plant. Although we cannot identify the specific toxic substances present, it is essential to observe your cat for any negative reactions upon exposure to the seeds. Consuming these seeds may result in various symptoms. To protect their health, it is vital to obtain prompt veterinary assistance if you suspect your cat has been poisoned by the Japanese pagoda tree.

Is Japanese pagoda tree toxic to dog?

The Japanese pagoda tree presents a moderate toxicity risk to dogs. Dogs can become poisoned primarily through the consumption of this plant, particularly its seeds. Once ingested, a dog may show a range of symptoms indicating poisoning, which can include gastrointestinal distress, vomiting, diarrhea, lethargy, or more severe manifestations depending on the quantity consumed. Therefore, it is essential for dog owners to vigilantly supervise their pets and restrict their access to the Japanese pagoda tree, especially its seeds. If a dog does ingest any part of the Japanese pagoda tree, it is vital to seek immediate veterinary assistance to ensure timely and appropriate care.

WARNING

The judgment on toxicity and danger is for reference only. We DO NOT GUARANTEE any accuracy of such judgment. Therefore, you SHALL NOT rely on such judgment. It is IMPORTANT TO SEEK PROFESSIONAL ADVICE in advance when necessary.