Clematis Kermesina Clematis 'Kermesina' (Vt)

☠ Toxic to humans
🐾 Toxic to pets
🌸 Blooming
🍪 Not edible
‍🌱 Hard-care
clematis 'Kermesina'


Clematis 'Kermesina', best known as the Clematis, is a stunning flowering vine. It displays a prolific amount of vibrant, crimson flowers that offer a dramatic contrast against the deep green leaves. The flowers are generally star-shaped, with each petal tapering to a point, giving them a textured and layered appearance. These petals surround a prominent center of contrasting yellowish stamens that add a touch of brightness and attract pollinators. The Clematis has a lush foliage, with leaves that are often compound, made up of several leaflets that can be elliptical to lance-shaped, with a glossy finish and a leathery texture. The Clematis 'Kermesina' grows with a twining habit and will often need a support structure such as a trellis or fence to climb on, revealing its cascading nature as it matures. The plant is admired for its decorative appeal that lasts through its long blooming period, which adds to its popularity among garden enthusiasts. Overall, the Clematis is a visually appealing plant that can transform garden spaces with its ornamental blossoms and evergreen presence.

Plant Info
Common Problems

About this plant

  • memoNames

    • Family


    • Synonyms

      Virgin's Bower, Leather Flower, Vase Vine.

    • Common names

      Clematis 'Kermesina' (Vt).

  • skullToxicity

    • To humans

      Clematis, including the Clematis 'Kermesina', can be toxic to humans if ingested. All parts of the plant contain protoanemonin, which is released when the plant is bruised or cut. Eating parts of the plant can cause severe mouth pain and ulcers, digestive upset, vomiting, and diarrhea. In some cases, it can lead to salivation, convulsions, or even paralysis. Handling the plant may also cause skin irritation or dermatitis in sensitive individuals.

    • To pets

      Clematis, including the Clematis 'Kermesina', is toxic to pets such as dogs, cats, and horses. All parts of the plant contain a compound called protoanemonin, which can cause drooling, vomiting, diarrhea, and abdominal pain if ingested. In severe cases, ingestion can result in ataxia, convulsions, or even fatalities. Contact with the plant can also cause dermatitis or skin irritation in pets.

  • infoCharacteristics

    • Life cycle


    • Foliage type


    • Color of leaves


    • Flower color


    • Height

      6-8 feet (1.8-2.4 meters)

    • Spread

      3-4 feet (0.9-1.2 meters)

    • Plant type


    • Hardiness zones


    • Native area



  • money-bagGeneral Benefits

    • Ornamental Appeal: 'Kermesina' adds aesthetic value to gardens with its vibrant red or pinkish-red flowers.
    • Vertical Interest: This clematis is ideal for climbing structures, adding height and dimension to garden landscapes.
    • Seasonal Color: It blooms in late spring to early summer, providing seasonal color when many other plants are not in bloom.
    • Wildlife Attraction: The flowers attract pollinators such as bees and butterflies, supporting biodiversity.
    • Easy to Grow: Clematis 'Kermesina' is relatively easy to grow and maintain, making it suitable for gardeners of various skill levels.
    • Versatility: Can be used in various garden designs, including containers, trellises, and walls, or as ground cover if not provided with vertical support.
    • Shade Tolerance: While it prefers full sun, it can tolerate partial shade, providing flexibility in garden placement.
    • Drought Resistance: Once established, it is somewhat drought-resistant, reducing the need for frequent watering.
    • Pruning Group: Belongs to Pruning Group 3, meaning it can be cut back hard at the end of winter, which makes maintenance easier.

  • medicalMedical Properties

    This plant is not used for medical purposes.

  • windAir-purifying Qualities

    This plant is not specifically known for air purifying qualities.

  • leavesOther Uses

    • Clematis vines can be trained to grow over fences and walls, providing a natural screen for privacy in gardens.
    • The fine stems and intertwining nature of the Clematis 'Kermesina' make it an ideal candidate for creating living topiaries in the shape of various figures or forms.
    • Clematis flowers can be used as a natural dye source for fabrics, producing a range of colors depending on the mordant used.
    • When dried carefully, the vines and flowers of the Clematis 'Kermesina' can make unique and delicate additions to floral displays and wreaths.
    • Artists and photographers often use the visually striking Clematis 'Kermesina' as a subject or backdrop to enhance the aesthetic appeal of their work.
    • The plants can be used in educational settings, such as schools and botanical gardens, to teach about plant growth habits, flowering, and vine training.
    • Leaves and flowers of the Clematis 'Kermesina' can be pressed and used in the traditional craft of flower pressing, contributing their unique shapes and colors to the art pieces.
    • In some cultures, the blooming period of the Clematis is used as an indicator for the timing of agricultural activities or the changing of seasons.
    • Due to its climbing ability, the Clematis 'Kermesina' can be employed in hiding or improving the aesthetic look of unsightly garden structures like compost bins or water tanks.
    • Landscape architects may use Clematis 'Kermesina' for xeriscaping, as once established, some clematis varieties can be quite drought tolerant and contribute to water-efficient garden design.

Interesting Facts

  • bedFeng Shui

    The Clematis is not used in Feng Shui practice.

  • aquariusZodiac Sign Compitability

    The Clematis is not used in astrology practice.

  • spiralPlant Symbolism

    • Mental Agility: Clematis 'Kermesina', commonly known as the Virgin's Bower, is often associated with intelligence and quick thinking due to its vigorous and flexible climbing habit.
    • Artistic Inspiration: The vibrant colors and elegant flowers of the Virgin's Bower symbolize creativity, making it a symbol for those seeking muse or inspiration in their artistic endeavors.
    • Traveler’s Joy: As Virgin's Bower is a climber that can cover vast areas, it signifies the joy and adventure found in traveling and exploring new horizons.
    • Safety: In some cultures, the Virgin's Bower is believed to offer protection, its encircling vines symbolizing a safe haven or security for the home and those who dwell within.
    • Spiritual Ascension: Its tendency to grow upwards towards the light is symbolic of spiritual growth, enlightenment, and the pursuit of higher states of consciousness.

Every 1-2 weeks
2500 - 10000 Lux
Every 3-4 years
Spring-Early Summer
As needed
  • water dropWater

    Clematis vines, including the 'Kermesina' variety, prefer consistently moist soil that is not waterlogged. During the growing season, water them thoroughly once a week, using about 1 gallon of water per plant for established vines. In hot or dry weather, you may need to water more frequently to maintain soil moisture. Always check the top inch of the soil before watering; if it feels dry, it's time to water. Reduce watering in the fall and winter when the plant is dormant.

  • sunLight

    'Kermesina' Clematis thrives in locations with full sun to partial shade. They perform best with about 6 hours of sunlight a day, but in very hot climates, they benefit from afternoon shade to protect them from intense heat. Ensure the planting site receives morning sun, which helps keep the foliage dry and healthy, reducing the risk of fungal diseases.

  • thermometerTemperature

    The 'Kermesina' Clematis is hardy and can tolerate a wide range of temperatures, from winter lows down to -20°F to summer highs that typically should not exceed 90°F. The ideal growing temperatures range from 70°F to 75°F during the day. This climber is adaptable but performs best when not exposed to extreme cold or heat for prolonged periods.

  • scissorsPruning

    Prune 'Kermesina' Clematis to promote vigorous growth and maximize flowering. This variety is in pruning group 2, which means it produces flowers on old and new wood. In late winter or early spring, lightly prune to remove dead or weak stems and shape the plant. After the initial bloom, a more extensive pruning can encourage a second flush of flowers.

  • broomCleaning

    As needed

  • bambooSoil

    For the best soil mix for Clematis 'Kermesina', commonly known as the Virgin's Bower, use a well-draining, fertile soil with a pH of around 6.0 to 6.5. A mix of loamy soil enriched with compost or well-rotted manure will support its growth. Mulching will help maintain soil moisture and coolness.

  • plantRepotting

    Virgin's Bower does not require frequent repotting; it typically needs it every 3 to 4 years. If its growth is vigorous or it outgrows the current container, prepare to repot in late winter before the active growing season begins.

  • water dropsHumidity & Misting

    Virgin's Bower thrives in average outdoor humidity levels. As a garden plant, it does not have specific humidity requirements but benefits from the natural fluctuations in outdoor conditions.

  • pinSuitable locations

    • Indoor

      Provide ample light, support for climbing, and consistent moisture.

    • Outdoor

      Plant in fertile soil, partial shade to sun, and provide climbing support.

    • Hardiness zone

      4-9 USDA

  • circleLife cycle

    Clematis 'Kermesina' (Vt), commonly known as Virgin's Bower, begins its life cycle as a seed, requiring a period of stratification or cold treatment before germination. Upon germination in spring, the seedling emerges and develops into a vine, relying on surrounding structures for support as it climbs. Throughout the growing season, it develops compound leaves and in late spring to summer, it produces vibrant red to pinkish-red, four-petaled flowers which attract pollinators. After pollination, the flower's ovaries swell to form achenes, each with a plumose tail that assists in wind dispersal. In fall, as temperatures decline, the plant enters a period of dormancy, with the above-ground portions dying back. The cycle starts anew in spring as the root system resprouts, continuing the perennial cycle of growth and reproduction.

  • sproutPropogation

    • Propogation time

      Spring-Early Summer

    • Propogation: The most popular method of propagating Clematis 'Kermesina', commonly known as the Virgin's Bower, is through softwood cuttings. This is best done in late spring or early summer when the plant's new growth is green and flexible but not too woody. To propagate, you should select a healthy piece of stem about 4 to 6 inches (10 to 15 centimeters) long with at least two sets of leaves. The bottom set of leaves is removed, and the cut is made just below a leaf node, the point on the stem where leaves emerge. The cutting is then dipped in rooting hormone to encourage root development and planted in a pot with well-draining soil mix. The soil should be kept moist but not soggy, and the pot should be placed in a warm spot with indirect light until roots have developed, which typically takes several weeks.