Chamaecyparis pisifera, commonly known as Sawara cypress or false cypress, is a slow-growing evergreen tree native to Japan. Belonging to the Cupressaceae family, it can reach up to 50 feet in height with a spread of about 20 feet. The tree features a conical shape and dense, blue-green, scale-like foliage.
The Sawara cypress is highly adaptable and can thrive in various soil types, including clay, loam, and sand. It prefers well-drained soil and full sunlight but can also tolerate partial shade.
Several cultivars of the Sawara cypress offer different foliage colors, such as gold or yellow-green, making them popular for ornamental use in landscaping projects.
These trees are low-maintenance and require minimal pruning, except for shaping purposes. Their resistance to pests and diseases makes them an excellent choice for gardeners seeking an easy-care plant.
In Japanese culture, the Sawara cypress holds significant cultural value, symbolizing longevity and good fortune. It is a popular choice for bonsai cultivation.
Overall, Chamaecyparis pisifera is an attractive evergreen tree known for its unique blue-green foliage. Its ornamental value, ease of care, and adaptability to various soil types and sunlight levels make it a standout choice for landscaping projects.
Sawara cypress has good disease resistance and is generally not prone to illnesses. In terms of care, this plant is relatively low maintenance. When planted outdoors it needs minimal watering, and larger plants typically do not require pruning. However, smaller plants should be pruned after they have bloomed. Sawara cypress is suitable for anyone with an outdoor space, such as a garden or deck, and does not require much care experience.
How to keep Chamaecyparis Pisifera.
Light
The sawara cypress prefers plenty of light and typically prospers with a steady, generous amount of sun. However, it can adapt to somewhat less bright conditions. Native to areas with abundant sunlight, it benefits from stronger illumination. Still, both excessive and insufficient light can negatively impact its healthy growth.
Water
The Sawara cypress thrives in evenly moist soil but can tolerate some drought. To ensure optimal growth, water the plant every two weeks and consider adding mulch. Mulching helps retain moisture and protects the plant from temperature extremes.
Temperature
Sawara cypress originates from cooler-climate regions and prefers temperatures from 41 to 89.6 ℉ (5 to 32 ℃). It may require artificial cooling in summer and additional warming measures during harsh winters.
Fertilizer
Sawara cypress has distinct nutrient needs and does not require heavy fertilization. Fertilizing in spring is best to encourage optimal growth. Supplying nutrients enhances its health, increases resistance to pests and diseases, and helps sustain its long lifespan.
Pruning
The Sawara cypress has feathery foliage and benefits from light pruning to maintain its shape. The best time to prune is from early to late winter when the tree is dormant. It's important to avoid heavy pruning to prevent unnecessary stress on the plant. Regular trimming encourages denser growth, and using sharp, clean tools is essential to prevent disease.
Toxicity
Threadleaf false cypress is not toxic to people and pets. However, the shrub is not meant to be eaten and may cause stomach upset if ingested in large quantities.
Further reading →
The toxicity and danger assessments provided are for reference only. We do not assure their accuracy, so it's crucial not to depend on them. Seek professional advice when necessary for accurate guidance.
Botanical profile.
- Plant Type
- Tree
- Life Cycle
- Perennial
- Genus
- Chamaecyparis
- Family
- Cupressaceae
- Hardiness Zone
- 4-8
- Mature Height
- 12.19 m to 21.34 m
- Mature Spread
- 4.57 m to 6.1 m
- Leaf Color
- Green, Blue, Yellow, Gold, Silver
- Leaf Type
- Evergreen
- Flower Color
- Brown
- Flower Size
- 0.51 cm to 0.76 cm
- Bloom Time
- Late spring, Early summer, Mid summer
- Planting Time
- Spring, Autumn
- Harvest Time
- Mid summer, Late summer, Early fall
- Native Area
- Japan
Other names.
Reader questions.
How should I water my Sawara cypress tree?
Watering your Sawara cypress is a simple task. One easy way to do it is by using a garden hose to slowly soak the soil. This method works well for mature trees, which need a lot of water. For smaller trees, a watering can or other small tool will suffice. It's important to avoid overhead watering, as it can cause disease, especially in young trees.
Why should I put fertilizer on my Sawara cypress?
To ensure the Sawara cypress thrives, it is beneficial to fertilize it during the spring. Given its long lifespan, the plant requires support and nourishment. By adding nutrients to the soil, the plant's overall health improves, enabling it to fend off typical pests and diseases. Doing so prevents growth stunting and premature aging.
What are the sunlight requirements for Sawara Cypress?
The Sawara Cypress requires full sun, meaning it needs above 6 hours of sunlight daily, but it can also tolerate partial sun, about 3-6 hours of sunlight. It's important to observe how sunlight moves through your garden to find spots that provide the right balance of light and shade, ensuring the plant's well-being. Originating from environments with generous sunlight, the Sawara Cypress enjoys the benefits of enriched lighting, but its health can be negatively affected by either excessive or limited light.
What is the ideal temperature range for Sawara cypress?
Sawara cypress thrives in cooler climates with temperatures ranging between 41 to 89.6°F (5 to 32°C). It can withstand strong cold, but it does require some attention to temperature extremes. During summer, measures may be necessary to cool it, and in harsh winters, additional warming might be needed. However, it usually does not require special frost protection measures unless winter temperatures are expected to drop below -30°C. In such cases, wrapping the trunk and branches with materials like non-woven fabric or cloth can provide necessary cold protection. Additionally, to prepare for winter, it's recommended to water the plant abundantly before the first freeze in autumn to ensure the soil remains moist and enters a frozen state, helping to prevent drought and water scarcity during winter and early spring.
What do I need to do if I give too much or too little water to my Sawara cypress?
Overwatering your Sawara cypress can occur when the soil doesn't drain properly, leading to plant decline. To address this issue, you can either improve the soil's drainage by adding amendments or transplant the cypress to a better location. If you have a potted cypress, it may be necessary to repot it with looser soil for improved drainage. Overwatering can also make the plant susceptible to diseases, so early treatment is important. On the other hand, underwatering can be easily remedied by increasing the frequency of watering, allowing the plant to regain its health. To determine if your Sawara cypress has been overwatered, examine the foliage, particularly the new growth. If the new growth is discolored or easily breaks, it is a sign of excessive moisture. Standing water or slow drainage in the plant's growing area also indicates overly moist soil. Symptoms of underwatering include sparse, brown leaves. Considering recent rainfall and high temperatures can help you determine the cause of these symptoms.
When should I fertilize my Sawara cypress tree?
Sawara cypress is unique compared to garden plants because it doesn't need a lot of extra nutrients. However, the growing medium may not always provide enough nutrients for healthy growth. The best time to fertilize Sawara cypress is in the spring, before new growth starts.
Can Sawara Cypress grow under artificial lighting?
Yes, Sawara Cypress can grow under artificial lighting, which is especially helpful in winter or less sunny spaces where natural sunlight is insufficient. For optimal growth, it's recommended to use LED lights that provide specific wavelengths needed by the plant. Full sun plants need 30-50W/sq ft of light, partial sun plants need 20-30W/sq ft, and full shade plants require 10-20W/sq ft. The artificial light source should be placed 12-36 inches above the plant and kept on for 8-12 hours per day to mimic natural daylight.
How does Sawara cypress react to low temperatures?
Sawara cypress is notably cold-tolerant, ideally remaining above 5°C. In winters, it should be kept above -25°C. When temperatures fall below -30°C, you might not notice immediate damage, but come spring, the branches may turn brittle and dry, failing to produce new shoots. To manage these conditions, it's advised to prune away any dead branches in the spring that have not produced new leaves, aiding the plant in recovery and maintaining its health.
How often do I need to water my Sawara cypress tree?
A mature Sawara cypress can survive with minimal water, mainly relying on rainfall. During the hottest months, you may need to water it once a week, but in other seasons, watering may not be necessary. However, if the tree is newly planted, it is important to water regularly to ensure the roots establish themselves. Remember, Sawara cypress cannot tolerate standing water, so it's better to be cautious and avoid overwatering.
When is the wrong time to fertilize my Sawara cypress?
While some plants benefit from regular fertilization either monthly or weekly, Sawara cypress is an exception. This particular plant does not need excessive nutrients, and an excess of fertilizer can actually cause it to decline. To ensure the health of Sawara cypress, it is best to only apply fertilizer during the spring season, and avoid adding any fertilizer or organic matter to the soil during summer, fall, and winter.
What are the important symptoms of light deficiency in Sawara Cypress?
Sawara Cypress may show various symptoms indicating light deficiency or overexposure. Symptoms include smaller new leaves, leggy or sparse growth, faster leaf drop, slower or no new growth, and lighter-colored new leaves. Overexposure symptoms include chlorosis (leaves turning yellow), sunscald, leaf curling, wilting, and leaf scorching. These signs indicate the plant's struggle with inadequate or excessive sunlight, affecting its growth and health.
What should be done if Sawara cypress is exposed to high temperatures?
During the summer, it is important to ensure that Sawara cypress is kept below 32°C. Exposure to temperatures above 35°C can cause the leaves to lighten in color, the tips to become dry and withered, and increase the plant's susceptibility to sunburn. To mitigate these issues, you should trim away sunburned and dried-up parts and move the plant to a cooler location, away from midday and afternoon sun, or utilize a shade cloth for protection. Additionally, watering the plant in the morning and evening to keep the soil moist will help in maintaining its health during high temperatures.
