Diels Cotoneaster Cotoneaster dielsianus

☠ Toxic to humans
🐾 Toxic to pets
🌸 Blooming
🍪 Not edible
‍🌱 Easy-care
Diels' cotoneaster


Cotoneaster dielsianus, commonly known as Diels Cotoneaster, is a plant that displays a distinct and decorative aspect throughout the year. Its most striking feature is the small, glossy green leaves that have a slightly leathery texture. These leaves are arranged in an alternating pattern along the stems, giving the plant a full and lush appearance. In the spring, Diels Cotoneaster comes alive with a profusion of small, pinkish-white flowers. These flowers are typically less than an inch across and grow in clusters, creating a delicate and charming display. The blooms are appealing not only for their beauty but also because they attract pollinators such as bees, adding a lively buzz to gardens. Following the flower display, the plant produces bright red berries in the fall, which persist into the winter. These berries are small and round, giving the plant an additional decorative element as the leaves start to turn and fall. Birds are often attracted to these berries, offering an excellent food source during the colder months. The branches of Diels Cotoneaster have a graceful, arching habit, which provides a pleasing structural element to any garden. The plant's overall form is dense and mounded, contributing to its role as an excellent choice for hedges, ground covers, or even as a stand-alone specimen in a landscape setting. Its foliage may take on a reddish or purplish tint in the colder weather, adding yet another layer of interest to its year-round appeal. Diels Cotoneaster, with its vibrant berries, delicate flowers, and rich green leaves, combined with its arching branches, truly has a unique and striking appearance that can enhance a variety of garden designs.

Plant Info
Common Problems

About this plant

  • memoNames

    • Family


    • Synonyms

      Diels Cotoneaster, Diels's Cotoneaster.

    • Common names

      Cotoneaster dielsianus.

  • skullToxicity

    • To humans

      Cotoneaster is generally considered to have a low level of toxicity to humans. However, if ingested, parts of the plant, particularly the berries, can potentially cause mild gastrointestinal distress, including symptoms like nausea, vomiting, and diarrhea. It is not usually life-threatening, but consuming large quantities could potentially lead to more severe symptoms. As a precaution, it's advised to keep Cotoneaster out of reach of children who might be tempted to eat the berries. If ingestion occurs, medical advice should be sought.

    • To pets

      Cotoneaster can be toxic to pets if ingested. While the toxicity is usually low, the consumption of berries, leaves, or other parts of the plant can cause gastrointestinal upset in animals such as dogs and cats. Symptoms of Cotoneaster poisoning in pets may include vomiting, diarrhea, and abdominal pain. In rare cases or when large amounts have been consumed, more serious effects could occur. Pet owners should keep their animals away from these plants and consult a veterinarian if they suspect their pet has ingested any part of a Cotoneaster.

  • infoCharacteristics

    • Life cycle


    • Foliage type


    • Color of leaves


    • Flower color


    • Height

      4-5 feet (1.2-1.5 meters)

    • Spread

      4-6 feet (1.2-1.8 meters)

    • Plant type


    • Hardiness zones


    • Native area



  • money-bagGeneral Benefits

    • Ornamental Appeal: Cotoneaster dielsianus, commonly known as Diels cotoneaster, is appreciated for its attractive glossy green leaves and compact growth habit, making it a popular choice for garden landscapes.
    • Seasonal Interest: It produces small pink or white flowers in the spring followed by bright red berries in the fall, offering multiple seasons of visual interest.
    • Erosion Control: The dense growth pattern of Diels cotoneaster makes it effective at stabilizing soil on slopes, thus helping to prevent soil erosion.
    • Habitat for Wildlife: The berries produced by Diels cotoneaster provide a food source for birds and other wildlife, supporting biodiversity in the garden.
    • Low Maintenance: Diels cotoneaster is known for being a low-maintenance plant, requiring minimal care once established, which can save time and resources for gardeners.
    • Drought Tolerance: Once established, this plant is relatively drought-tolerant, making it suitable for xeriscaping and gardens in drier climates.
    • Hedging and Topiary: Due to its dense growth, Diels cotoneaster can be pruned into hedges or shaped into topiary forms, allowing for creative landscape design.
    • Pollinator-Friendly: The flowers attract bees and other pollinators, which is beneficial for the pollination of other plants in the vicinity.

  • 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

    • Cotoneaster dielsianus hedges are often used in garden design for their dense foliage and ability to be trimmed into various shapes for aesthetic appeal or privacy screens.
    • The berries of the Cotoneaster dielsianus can be used to produce a natural dye, which may vary in color depending on the mordant used in the dyeing process.
    • These plants are sometimes used in bonsai culture due to their attractive form, small leaves, and the challenge they present to bonsai enthusiasts.
    • The dense branching pattern of Cotoneaster dielsianus provides shelter and nesting opportunities for small birds and beneficial garden insects.
    • With its attractive berry display, Cotoneaster dielsianus branches may be cut and used in floral arrangements, especially during the winter holidays.
    • The plant's tolerance to drought makes it useful for xeriscaping, which is landscaping designed to reduce or eliminate the need for supplemental water from irrigation.
    • Because of its robust nature, Cotoneaster dielsianus is used in slope stabilization and erosion control in landscaping projects.
    • In urban settings, Cotoneaster dielsianus can serve as a green roof plant, contributing to biodiversity and building insulation when used on roof gardens.
    • Some wildlife enthusiasts plant Cotoneaster dielsianus to attract pollinators such as bees and butterflies, supporting local ecosystems.
    • As a component of mixed hedgerows, Cotoneaster dielsianus can be part of a strategy for creating wildlife corridors in rural or suburban landscapes.

Interesting Facts

  • bedFeng Shui

    The Cotoneaster is not used in Feng Shui practice.

  • aquariusZodiac Sign Compitability

    The Cotoneaster is not used in astrology practice.

  • spiralPlant Symbolism

    • Hardiness: Cotoneaster dielsianus is known for its ability to thrive in various soil conditions and withstand harsh weather, symbolizing resilience and the ability to endure tough circumstances.
    • Growth: With its fast-growing nature, this plant represents rapid development and expansion, making it a symbol for progress and prosperity.
    • Protection: Due to its dense growth habit which can provide shelter for birds and other wildlife, the Cotoneaster dielsianus can symbolize sanctuary and protection.
    • Adaptability: Its capacity to adapt to different environments and its tolerance to pruning reflect flexibility and the ability to adjust to changing situations.

When soil is dry
2500 - 10000 Lux
Every 2-3 years
Spring-Early Summer
As needed
  • water dropWater

    Dielsian cotoneaster should be watered deeply once a week, allowing the soil to dry out somewhat between waterings. During the growing season, it may need more frequent watering, especially if the weather is particularly hot or dry. Aim to provide the plant with about 1-2 gallons of water each week, depending on the size of the shrub and the weather conditions. During the winter months, when the plant is dormant, reduce the frequency to once every two weeks or less, making sure the soil does not become waterlogged.

  • sunLight

    Dielsian cotoneaster thrives best in full sun to partial shade. It prefers a spot where it can receive at least 6 hours of sunlight daily. If you are planting it in a garden, place it in an area that is sunny for most of the day, but with some shelter from the harsh afternoon sun if you’re in a very hot climate.

  • thermometerTemperature

    Dielsian cotoneaster is hardy and versatile, tolerating a wide range of temperatures. It can survive minimum temperatures of around 0°F, but the ideal temperature range for this plant is between 60°F and 75°F. Ensure that the plant is protected from extreme cold and frost, which can damage the foliage and branches.

  • scissorsPruning

    Dielsian cotoneaster benefits from pruning to maintain its shape, encourage bushier growth, and remove any dead or diseased branches. The best time to prune is in late winter or early spring before new growth begins. Pruning can be done annually, but it's not strictly necessary every year—observe the plant and prune as needed.

  • broomCleaning

    As needed

  • bambooSoil

    Diels Cotoneaster prefers well-draining loamy soil with a pH of 6.0 to 7.5. The best soil mix consists of two parts garden soil, one part sand or perlite, and one part peat or compost to maintain fertility and drainage.

  • plantRepotting

    Diels Cotoneaster should typically be repotted every two to three years to refresh the soil and prevent root overcrowding.

  • water dropsHumidity & Misting

    Diels Cotoneaster thrives in moderate humidity levels but is tolerant of a wide range, not requiring any special humidity adjustments.

  • pinSuitable locations

    • Indoor

      Place Diels Cotoneaster in bright, indirect light indoors.

    • Outdoor

      Plant Diels Cotoneaster in sun or part shade outside.

    • Hardiness zone

      6-8 USDA

  • circleLife cycle

    Cotoneaster dielsianus, commonly known as Diels Cotoneaster, begins its life as a seed typically dispersed by birds that eat the fruit. Upon germination in suitable conditions—well-drained soil and partial to full sun—the seedling emerges and focuses on establishing a root system. As it enters the juvenile phase, the plant develops a woody stem and foliage, growing both vertically and horizontally to form a dense, bushy shrub. During spring, Diels Cotoneaster produces small, pinkish-white flowers that, once pollinated, develop into red pome fruits by late summer or autumn, attracting wildlife and facilitating seed dispersal. The plant reaches maturity and will continue to flower and fruit for many years, with its growth slowing down as it ages. In the final stage of its life cycle, the older Cotoneaster dielsianus may experience reduced vigor and become more susceptible to diseases, eventually dying and decomposing to return nutrients to the soil.

  • sproutPropogation

    • Propogation time

      Spring-Early Summer

    • For Cotoneaster dielsianus, also known as Diels Cotoneaster, the most popular method of propagation is through semi-hardwood cuttings. This is typically done in the late summer months. Cuttings should be about 4 to 6 inches (10 to 15 cm) long and taken from the current year's growth. The leaves on the lower half of the cutting are removed, and the cut end is dipped in a rooting hormone to encourage root development. The cutting is then planted in a well-draining soil mixture and kept in a humid environment until roots have developed and new growth is visible, indicating the cutting has successfully formed its own root system and can be transplanted to a permanent location.