Cornus alba, commonly known as Siberian dogwood or Tatarian dogwood, is a deciduous shrub that belongs to the Cornaceae family. It is native to Siberia, as well as parts of China and Korea. Typically, the plant grows up to 3-4 meters in height and spreads up to 2-3 meters in width. The leaves of Cornus alba are oval-shaped and dark green with a glossy texture. In autumn, they transform into shades of red or purple before falling off. The plant produces small white flowers that bloom from May through June. One of the most distinctive features of Cornus alba is its bright red stems, which provide attractive winter interest when other plants have lost their leaves. The bark peels off easily, revealing a bright green layer underneath. Cornus alba prefers moist soil conditions but can tolerate drought once established. It grows best in full sun but can also tolerate partial shade. The plant has several uses, including serving as an ornamental shrub for landscaping due to its attractive foliage and stem coloration. It can also be used for erosion control, thanks to its extensive root system that helps stabilize soil on slopes. Additionally, it has medicinal properties, with extracts from the bark being used to treat fever, inflammation, and pain. Finally, it provides a food source for birds, who feed on its berries during the winter months when other food options are scarce. Overall, Cornus alba is an attractive shrub that provides year-round interest. Its colorful foliage in the autumn, followed by striking stem coloration in the winter, makes it a popular choice among gardeners seeking low-maintenance plants with multiple aesthetic and functional uses in their landscapes or gardens.
Siberian dogwood shows good resistance to disease and is generally not prone to it. Regarding care, this plant is fairly low-maintenance. When grown outdoors it needs little watering, and larger specimens usually do not require pruning. Smaller plants, however, should be pruned after they have bloomed. Siberian dogwoodt is suitable for anyone with an outdoor space, such as a garden or deck, and does not require a lot of care experience.
How to keep Cornus Alba.
Light
Siberian dogwood grows best with plentiful sunlight but can also adjust to sites where the sun is less intense. Excessive shading, however, can lead to poor growth and declining health. Its native habitat shows a similar light pattern, which accounts for its strong tolerance to sun. Both excessive sunlight and insufficient sunlight can diminish its overall vigor.
Water
Siberian dogwood thrives in climates with cold winters and mild summers. It prefers soil that is consistently moist but well-drained. Water the plant every two weeks, but increase the frequency during the growing season to encourage healthy growth and vibrant foliage. Its hardiness makes it well-suited for outdoor environments and allows it to adapt to seasonal changes.
Humidity
This plant will thrive in moderate humidity, which is probably the level in your home. However, misting it a few times a week can be very beneficial. Make sure the room has good ventilation.
Temperature
Siberian dogwood is native to areas where temperatures fall between 41 and 89.6 °F (5 to 32 ℃). It prefers moderate conditions; therefore, provide cooling in hot seasons and warmth during cold periods.
Fertilizer
Timing is essential for fertilizing Siberian dogwood. Apply fertilizer in early spring and continue monthly until early summer. Fertilizer promotes attractive blooms and supplies energy during both dormant and active growth periods.
Pruning
Siberian dogwood benefits greatly from annual pruning in early spring. To encourage new growth and enhance its vibrant color, remove one-third of the older stems. Additionally, thin out crowded areas to improve air circulation. Regular pruning not only boosts plant health but also enhances the vibrancy of the stems. For the best results, focus on removing older branches.
Botanical profile.
- Plant Type
- Tree, Shrub
- Life Cycle
- Perennial
- Genus
- Cornus
- Family
- Cornaceae
- Hardiness Zone
- 5-8
- Mature Height
- 3.05 m
- Mature Spread
- 2.44 m to 3.05 m
- Leaf Color
- Green, Yellow, White, Variegated
- Leaf Type
- Deciduous
- Flower Color
- White
- Flower Size
- 0.51 cm to 0.76 cm
- Bloom Time
- Late spring, Early summer
- Planting Time
- Spring, Autumn, Winter
- Harvest Time
- Mid summer
- Native Area
- Russia, Koppen, Mongolia, China
Other names.
Reader questions.
How should I water my Siberian dogwood tree in the best way?
To promote excellent root development, place a garden hose at the base of the plant. Avoid spraying the leaves directly, especially if they are outdoors in direct sunlight. Consider using bubblers to moisten the roots individually, or soaker hoses to cover the entire garden or bed when adding or removing plants. Make sure to drain any excess water and allow the soil to dry before watering again. When watering, aim for ground level to prevent diseases. On sunny days, you can spray the entire bush with water. Whether your Siberian dogwood is potted or in-ground, remember that it prefers deep watering rather than light sprinkling.
Why should I put fertilizer on my Siberian dogwood?
Fertilizing a Siberian dogwood has several important benefits. Firstly, it helps the tree produce beautiful blooms. For optimal results, it is best to fertilize in early spring. Additionally, fertilizer provides the tree with energy that it can store in the ground during periods of dormancy. By giving your Siberian dogwood extra nutrients during fall planting or late spring, it will have more energy available for active growth.
What are the sunlight requirements for Siberian Dogwood?
Siberian Dogwood thrives best with abundant sun exposure, ideally under conditions that mimic its native environment, which includes both full sun and partial sun areas. Full sun amounts to more than 6 hours of sunlight daily, while partial sun is about 3-6 hours. However, it's adaptable and can grow in less intense sunlight. Care should be taken to avoid very shaded spots as this can negatively impact its growth and health. Observing how sunlight moves through your garden will help in choosing optimal spots that ensure the plant's happiness by providing a balance of light and shade.
What is the native climate for Siberian dogwood?
Siberian dogwood, also known as Cornus alba, is native to regions where temperatures range from 41 to 89.6°F (5 to 32°C). It thrives in moderate temperatures, necessitating measures to cool it during hot seasons and warmth during colder periods. Although it has strong cold resistance and special frost protection is usually not necessary, protecting it at temperatures below -25°C is advisable.
What should I do if I give too much/not enough water to Siberian dogwood?
An overwatered Siberian dogwood can show signs such as yellowing, dropping leaves, and wilting. The plant may also appear dull and unhealthy with mushy stems. When these signs appear, it's best to adjust your watering schedule. On the other hand, wilting can also be a sign of under watering. Underwatered leaves may become crispy and dry, while overwatered leaves will be soft and wilted. If the soil is dry and watering isn't enough, give the plant a thorough watering. While enough water can help the plant recover, the damaged root system may cause the leaves to remain dry and yellow for a few days. Once the plant returns to normal, the yellowing of the leaves will cease. When keeping the Siberian dogwood indoors, always check the moisture levels in the pot. Avoid overwatering and watch for signs of black spots. If these spots are present, allow the soil to dry out by refraining from watering for a few days. Overwatering can lead to root rot, so if you notice discolored and slimy roots, consider transferring the plant to a different pot. Prevention of root rot is crucial, so do not allow the soil to become overly soggy. When planting your Siberian dogwood outdoors, make sure to dig a little deeper. If you find that the soil is too dry when checking with your fingers, it could indicate underwatering. Adequate watering is necessary to facilitate the plant's recovery.
When should I fertilize my Siberian dogwood?
To ensure effective fertilization of Siberian dogwood, timing is key. It is important to avoid fertilizing too early when the tree is dormant, as the fertilizer would simply be washed away by rainwater, causing waste and pollution. Instead, the first application of fertilizer should be applied in the early spring. For optimal results, continue fertilizing once a month until early summer.
How should artificial lighting be used for indoor Siberian Dogwoods?
Indoor Siberian Dogwoods require adequate lighting to grow optimally, especially when natural sunlight is insufficient. This can be particularly true in winter or less sunny spaces. Artificial lights, such as LED lights, can be a vital solution, offering the needed wavelengths of light. Full sun plants benefit from 30-50W/sq ft of artificial light, partial sun plants need 20-30W/sq ft, and full shade plants 10-20W/sq ft. Place the light source 12-36 inches above the plant to mimic natural sunlight and keep them on for 8-12 hours per day to replace natural daylight hours.
How should you care for Siberian dogwood during winter?
To care for Siberian dogwood during winter, it's recommended to water the plant thoroughly before the first freeze in autumn to ensure the soil remains moist as it enters a frozen state. This practice helps prevent drought and water scarcity for the plant during the winter and early spring months. Even though Siberian dogwood has strong cold resistance, providing extra protection if temperatures are expected to drop below -25°C by wrapping the trunk and branches with non-woven fabric or cloth is beneficial.
How many times a week should I give water to my Siberian dogwood?
The Siberian dogwood prefers deep, infrequent watering, especially when planted in pots. Potted plants have limited water storage and the soil dries out quickly. In cold regions, water every 3 to 5 days. Water in the morning when the soil is dry. Check the soil to determine if watering is needed - if the top 2-3 inches are dry, give the plant a full watering. During hot weather, check moisture daily as the soil can dry out fast. If you have a garden, irrigate the soil as needed. In hot climates, water once a week. Only water if the soil is 2-3 inches dry. Take rainfall into account and avoid overwatering to prevent root rot. If there is sufficient rainfall, additional watering may not be necessary. Siberian dogwood thrives in spring and fall. Add mulch 3-4 inches deep when the plants are outdoors to conserve water. Sandy soil drains faster, so water more frequently. Clay soil requires less frequent watering, about 2-3 days to dry the plant without causing root rot. Keep track of watering dates and watch for drooping leaves, which could indicate that watering is needed soon.
When is not a good time to fertilize my Siberian dogwood?
To ensure proper growth and blooming of Siberian dogwood, it's important to be mindful of the type and timing of fertilizer used. Avoid fertilizers with high levels of nitrogen, as these can cause excessive leaf growth while hindering flower production. Opt for a fertilizer with a lower nitrogen content compared to other nutrients to strike the right balance. Refrain from fertilizing after early autumn, as this can lead to excessive growth just before winter sets in. Additionally, avoid fertilizing during hot and dry periods, as dry soil does not effectively deliver nutrients and can stimulate growth that requires more water than may be available. It is best to use fertilizer earlier in the season when temperatures are cooler. Lastly, be aware that Siberian dogwood can absorb fertilizer from nearby plants or lawns, so take care to avoid inadvertently providing the tree/shrub with a double dose of fertilizer.
What are some important symptoms of light deficiency or overexposure in Siberian Dogwood?
Siberian Dogwood shows various symptoms when it receives too little or too much light. Light deficiency may cause smaller new leaves, leggy or sparse growth, faster leaf drop, slower or ceased growth, and paler or irregularly colored new leaves. Overexposure to sunlight can lead to chlorosis (yellowing of leaves), sunscald, leaf curling, wilting, and leaf scorching. These symptoms indicate the plant's struggle with the current light conditions, impacting its growth and health adversely.
What are the signs of Siberian dogwood being affected by low temperature?
Siberian dogwood shows remarkable cold tolerance, flourishing best in temperatures above 5°C and recommended to be kept above -20°C during winter. If temperatures fall below -25°C, while immediate damage may not be evident in winter, you might notice the branches becoming brittle and dry by spring, with no new shoots emerging. The solution to this is to prune away any dead branches that have failed to produce new leaves in spring.