Siberian iris Iris 'Trim the Velvet' (Sib)

☠ Toxic to humans
🐾 Toxic to pets
🌸 Blooming
🍪 Not edible
‍🌱 Easy-care
Siberian iris 'Trim the Velvet'


Iris 'Trim the Velvet' is a captivating plant known for its luxurious and eye-catching flowers. Each bloom is a masterpiece of deep, velvety purple petals that are sumptuously rich in color, with a slight sheen that suggests a softness akin to velvet. The petals have a classic iris form – three upright petals known as standards, paired with three downward-arching petals called falls – that create a regal and inviting display. The falls often feature a lighter, sometimes white or golden, area near the base known as the beard, which contrasts with the dark purple color, making the plant even more striking. The foliage of Iris 'Trim the Velvet' consists of long, sword-shaped leaves that grow in a dense clump, providing a lush green backdrop that accentuates the stunning blooms. The overall impression of the plant is one of elegance and sophisticated beauty, making it a standout choice for gardeners seeking a striking addition to their flowerbeds.

Plant Info
Common Problems

About this plant

  • memoNames

    • Family


    • Synonyms

      Siberian Iris

    • Common names

      Iris sibirica 'Trim the Velvet'

  • skullToxicity

    • To humans

      Irises, including the Iris 'Trim the Velvet', can be toxic if ingested. The most toxic part is the rhizome, or underground stem. The consumption of irises can lead to symptoms like nausea, vomiting, abdominal pain, and diarrhea. In some cases, skin contact with the sap can cause irritation or dermatitis.

    • To pets

      Irises, including the Iris 'Trim the Velvet', can be toxic to pets if ingested. The rhizome is the most dangerous part and can lead to gastrointestinal distress in animals, including symptoms like vomiting, drooling, lethargy, and diarrhea. If you suspect your pet has ingested part of an iris, it is important to contact a veterinarian.

  • infoCharacteristics

    • Life cycle


    • Foliage type


    • Color of leaves


    • Flower color


    • Height

      2-3 feet (60-90 cm)

    • Spread

      1-2 feet (30-60 cm)

    • Plant type


    • Hardiness zones


    • Native area

      Europe, Asia


  • money-bagGeneral Benefits

    • Ornamental Appeal: Adds visual interest to gardens with its velvety deep purple flowers.
    • Drought Resistance: Once established, it can tolerate periods of low water availability.
    • Low Maintenance: Requires minimal care beyond basic watering and occasional fertilization.
    • Hardiness: Adaptable to a range of climates and can survive cold winters.
    • Pest Resistance: Generally resistant to many common pests and diseases.
    • Soil Adaptability: Can thrive in a variety of soil types, provided they are well-drained.
    • Pollinator Attraction: Flowers attract butterflies, bees, and other beneficial insects.
    • Seasonal Interest: Provides spring to early summer blooms and has attractive foliage that offers seasonal interest.
    • Versatility: Suitable for planting in borders, beds, and as part of mixed plantings.
    • Propagation: Can be easily propagated through division, allowing gardeners to create more plants.

  • 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

    • Photographic Subject: Siberian iris can be a popular subject for photographers, particularly those interested in capturing the intricate details and vibrant colors of garden flowers.
    • Botanical Art: Due to its beauty, the plant can be depicted in botanical illustrations and watercolor paintings, often by artists specializing in flora representation.
    • Educational Tool: Horticulturalists and educators may use Siberian iris in lessons on plant biology, hybridization, and garden design due to its distinct characteristics.
    • Garden Competitions: Enthusiasts may cultivate 'Trim the Velvet' for entry into garden shows and competitions, aiming for awards in the category of irises or perennial plants.
    • Themed Gardens: The plant can be featured in "velvet-themed" gardens that utilize plants with rich, velvety textures or appearances to create a sensual experience.
    • Landscape Contrast: Siberian iris can be strategically placed to provide contrast in texture and color against coarser foliage and lighter-colored flowers in garden designs.
    • Craft Projects: The blooms and seed pods can be used in dried flower arrangements or other craft projects where the longevity and structure of the plant's parts are desirable.
    • Pond and Water Feature Edging: Siberian iris can be used to soften the edges of ponds and water features, adding a naturalistic touch with its foliage and flowers.
    • Color Theme Planting: Gardeners may use the deep purple blooms of 'Trim the Velvet' to adhere to a specific color-themed area within a garden.
    • Wet Area Enhancement: Being tolerant of moist soil, Siberian iris can be planted in areas of the garden that are prone to wetness, helping to beautify what might otherwise be a difficult spot to cultivate.

Interesting Facts

  • bedFeng Shui

    The Siberian iris is not used in Feng Shui practice.

  • aquariusZodiac Sign Compitability

    The Siberian iris is not used in astrology practice.

  • spiralPlant Symbolism

    • Hope: The Iris often symbolizes hope, conveying a sense of positive anticipation and belief in a brighter future.
    • Wisdom: In some cultures, irises are associated with wisdom and valued for their perceived ability to impart knowledge.
    • Valor: The Iris represents courage and celebrated valor, perhaps owing to its sturdy and upright growth, which could be seen as an emblem of strength.
    • Purity: With its delicate and intricate pattern, the Iris sometimes denotes purity, echoing innocence and cleanliness.
    • Messages: The Iris has been thought to symbolize communication and the delivery of messages, as the Greek goddess Iris was the messenger of the gods and a link between heaven and earth.
    • Royalty: Due to its regal appearance, the Iris is often associated with royalty and majesty.
    • Faith: The Iris can represent faith, holding a spiritual connotation and the belief in the unseen.

Every 2 weeks
2500 - 10000 Lux
Every 3-5 years
Late Summer to Early Fall
As needed
  • water dropWater

    Siberian irises like 'Trim the Velvet' prefer consistent moisture, especially during the growing season. They should be watered deeply to encourage deep root development, approximately once a week with about one to one and a half gallons of water per plant, or enough to moisten the soil to a depth of about 6 inches. However, the frequency should be adjusted based on weather conditions; during particularly hot or windy weather, they may require more frequent watering. During the dormancy period in winter, water less frequently, but do not let the soil completely dry out.

  • sunLight

    The Siberian iris 'Trim the Velvet' should be placed in an area that receives full sun to partial shade. They thrive best with at least six hours of direct sunlight per day. However, in hotter climates, some afternoon shade can be beneficial to protect the irises from intense, direct sunlight that might scorch the foliage.

  • thermometerTemperature

    Siberian irises like 'Trim the Velvet' are cold-hardy plants, typically enduring temperatures as low as -30°F. They perform well in a broad range of temperatures but prefer cooler climates and grow best in regions where the average temperatures are between 68°F and 75°F during the growing season. They will tolerate summer heat if not extreme, but require winter cold to trigger dormancy and subsequent flowering.

  • scissorsPruning

    Siberian iris 'Trim the Velvet' should be pruned to remove any dead or damaged foliage and spent flower stems after blooming to maintain plant health and appearance. Annual pruning, typically after the first frost, involves cutting back the foliage to about 4 to 6 inches to prepare for winter. Additionally, divide the rhizomes every three to five years in late summer, when clumps become overcrowded, to rejuvenate the plant and encourage more vigorous blooms the following season.

  • broomCleaning

    As needed

  • bambooSoil

    Siberian Iris 'Trim the Velvet' thrives best in well-draining soil with moderate fertility. A mix of loamy garden soil, compost, and coarse sand is ideal. Keep the pH range slightly acidic to neutral, between 6.5 and 7 for optimal growth.

  • plantRepotting

    Generally, Siberian Iris 'Trim the Velvet' should be repotted every 3 to 5 years to give the rhizomes space to spread and replenish the soil with nutrients. Dividing the clumps during repotting stimulates growth and prevents overcrowding.

  • water dropsHumidity & Misting

    Siberian Iris 'Trim the Velvet' is tolerant of a range of humidity levels and does not require special humidity conditions when planted outdoor. In general, average garden humidity is adequate for this hardy plant.

  • pinSuitable locations

    • Indoor

      Place in well-lit area; water when top soil is dry.

    • Outdoor

      Plant in full sun to part shade, moist soil.

    • Hardiness zone

      3-9 USDA

  • circleLife cycle

    Iris 'Trim the Velvet', commonly known as Siberian Iris, starts its life as a seed, which germinates in moist soil conditions after a period of cold stratification, mimicking winter. The seedling emerges in spring and grows into a juvenile plant, developing narrow, grass-like leaves and a rhizomatous root system. Over a few years, the plant matures and begins its reproductive phase, typically blooming in late spring to early summer with deep velvety purple flowers that attract pollinators. After pollination, seed pods form, eventually drying and releasing seeds for dispersal by wind or wildlife. Throughout the growing season, the foliage persists, photosynthesizing to store energy in the rhizomes for the next season. The plant enters dormancy in the fall as temperatures drop, with the foliage dying back, and it remains dormant through the winter until the cycle restarts with the next spring's growth.

  • sproutPropogation

    • Propogation time

      Late Summer to Early Fall

    • The most popular method of propagation for the Iris 'Trim the Velvet', commonly known as a Siberian Iris, is by division. This process involves separating the mature plant's rhizomes, which is best done in late summer after the blooming period has ended, typically from July to September. You start by digging up the clump of irises, shaking off excess soil, and then using a sharp knife or spade to cut the rhizomes into sections, ensuring that each section has at least one leaf fan. The divided rhizomes are then replanted into well-drained soil, spaced approximately 24 inches (about 60 centimeters) apart to allow for growth. By providing adequate water and keeping the area free of weeds, new Siberian Iris plants will establish and can be expected to bloom in the following season.