Japanese ternstroemia (Ternstroemia gymnanthera)

Also known as: Cleyera japonica, Sakaki, Japanese Cleyera

The Japanese Ternstroemia, also known as Ternstroemia gymnanthera, is an upright evergreen shrub that can reach heights of up to 3.5 meters. It typically blooms in the summer, displaying a rounded form. Native to regions including Japan, China, and the Himalayas, this plant is popularly used as a privacy screen or hedge. Its blue-green foliage provides year-round visual appeal.

In This Article

Care Tips Water Sunlight Temperature Soil Fertilize Prune Propagation Repotting

Attributes of Japanese ternstroemia

Lifespan

Perennial

Plant Type

Shrub

Plant Height

3.5 m

Spread

1.2 m to 1.8 m

Leaf Color

Green Red Yellow Gold Purple

Flower Size

2 cm

Flower Color

White Yellow

Images of Japanese ternstroemia

Quickly Identify Japanese ternstroemia

Upright, dense, oval silhouette reaching 8-10 feet (2.4-3 meters) in height.

Leaves are leathery, glossy, and adhere in an orderly fashion.

Flowers are small, creamy white, with red-pigmented edges, blooming in late spring.

Fruits transform from green to vibrant red, measuring 0.5 to 1 inch (1.27 to 2.54 cm).

Stems are thin, rust-gray, and demonstrate sympodial growth in a zigzag pattern.

Scientific Classification of Japanese ternstroemia

Phylum

Vascular plants

Class

Dicotyledons

Order

Heathers and allies

Family

Pentaphylacaceae

Genus

Ternstroemia

Species

Japanese ternstroemia

Planting and Growing of Japanese ternstroemia

Care Difficulty

Easy

Watering Schedule

Every 2 days

Sunlight Requirements

Partial sun

Sunshine Duration

4-8 hours

Ideal Temperature

60-75℉

Soil Type

Potting Mix, Peat Mix

Soil pH

6-7

Fertilizer Type

Balanced

Pruning Season

Spring, Summer

Pruning Area

Branches, Leaves

Pruning Frequency

Once a year

Repotting Season

Spring

Pot Type

Plastic, Ceramic

How to Water Japanese ternstroemia?

For Ternstroemia gymnanthera, it's vital to ensure the soil remains consistently moist but not soggy. Ideally, water should flow evenly through the substrate, absorbing into the soil matrix without flooding it. You should water until approximately 500 milliliters ensure even distribution without creating oversaturation.

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More About Watering Techniques→

What Are the Sunlight Requirements for Japanese ternstroemia?

Sunlight Requirements: Partial sun

Duration of light: 4 to 6 hours

Partial sun is ideal, providing a balanced growth environment and stimulating healthy bloom production, which sustains the plant's ornamental appeal and wellness.

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More About Sunlight Requirements Techniques→

What Is the Ideal Temperature Range for Japanese ternstroemia?

Ideal Temperature: 60 ~ 75℉

For optimal growth, Ternstroemia gymnanthera thrives best in a temperature range between 60°F and 75°F. This range ensures the plant can perform photosynthesis efficiently and maintain its metabolic processes without stress.

What Soil is Best for Japanese ternstroemia?

Soil type: Loam, Acidic soil

Soil PH: 6 ~ 7

Ternstroemia gymnanthera thrives in well-drained soil to prevent root rot. Well-drained soil helps in maintaining essential aeration which is beneficial for the root system. The plant prefers consistently moist soil without being waterlogged. Adequate moisture promotes healthy foliage and vibrant growth, making the plant more resilient to environmental stresses. A nutrient-rich soil enhances Ternstroemia gymnanthera's growth and flowering potential. Providing essential nutrients supports robust health and disease resistance. More About Soil→

How to Fertilize Japanese ternstroemia?

Fertilizer type: Balanced

For Ternstroemia gymnanthera, it's essential to provide a balanced amount of nutrients. When using liquid fertilizer, dilute it to half the recommended strength. Apply about 200 ml per plant. Ensure the soil is moist before application to protect the roots. More About Fertilizing Techniques→

How to Prune Japanese ternstroemia?

Pruning Time: Spring, Summer

Start by removing any dead or diseased branches to prevent any potential hazards and diseases from spreading. Follow by thinning out crowded areas to enhance light penetration and air circulation. Trim the outer edges uniformly to maintain a balanced shape. Focus on the natural form of the plant while ensuring an aesthetic and healthy structure. Avoid excessive cutting, which may lead to stress. More About Pruning Techniques→

How to Propagate Japanese ternstroemia plant?

Propagate Time: Spring, Early spring

Collect seeds from mature Ternstroemia gymnanthera plants during the autumn when they are fully ripe. Ensure that the seeds are dry and clean before storing them in a cool, dry place until you are ready to sow them in spring.

Select healthy, semi-hardwood cuttings from the parent plant. Ensure that each cutting is approximately 6-8 inches long and has at least a few leaves or leaf nodes. Remove leaves from the lower part of the cutting to reduce transpiration.

Sow seeds or plant cuttings in a well-draining medium such as a mix of peat and perlite. Keep the medium consistently moist but not waterlogged. Place the trays or pots in a bright area but out of direct sunlight to promote healthy root development.

More About Propagating Techniques→

How to Repot Japanese ternstroemia plant?

Repotting frequency: Every 2-3 years

Repot Ternstroemia gymnanthera when you notice roots emerging from the drainage holes, a slowdown in growth, or when the current potting soil becomes compacted and doesn't drain well. These indicators signify that the plant needs more space and fresh soil to thrive.

Select a pot that is slightly larger than the current one, with good drainage holes to prevent waterlogging. A pot that is one to two inches wider in diameter is ideal, ensuring the roots have room to grow, which helps prevent root-bound conditions and promotes healthy growth.

Opt for well-draining acidic potting mix, such as a blend designed for acid-loving plants like azaleas or camellias. This type of soil provides the slight acidity that Ternstroemia gymnanthera prefers and allows for proper drainage, reducing the risk of root rot.