Rhododendron Rhododendron 'Silver Slipper' (K)

☠ Toxic to humans
🐾 Toxic to pets
🌸 Blooming
🍪 Not edible
‍🌱 Hard-care
rhododendron 'Silver Slipper'


The Rhododendron 'Silver Slipper' is an eye-catching plant known for its vibrant and showy flowers. This variety boasts clusters of blossoms in a delicate shade of pink, with each individual flower prominently displaying a large, ruffled and wavy edges that add a touch of elegant texture to the overall appearance. The flowers emerge with a pastel tone and can deepen to a more intense hue as they mature. The blossoms are complemented by dark green leaves that provide a luscious backdrop, highlighting the floral display. Typically, the foliage is glossy and evergreen, creating a year-round interest even when the plant is not in bloom. The leaves are elongated, with a leathery texture and may have a slightly curled appearance at the edges. This plant creates a stunning visual impact with its rich floral display and lush foliage, making it a popular choice for ornamental gardens.

Plant Info
Common Problems

About this plant

  • memoNames

    • Synonyms

      Silver Slipper Rhododendron, Silver Slipper Azalea.

    • Common names

      Rhododendron 'Silver Slipper'

  • skullToxicity

    • To humans

      Rhododendron 'Silver Slipper' belongs to the Rhododendron genus which is known to contain toxic compounds. All parts of the rhododendron plant are considered poisonous to humans if ingested. The primary toxic compound is grayanotoxin, which can affect sodium channels in cell membranes and lead to symptoms such as vomiting, diarrhea, hypersalivation, weakness, coma, hypotension, CNS depression, cardiovascular collapse, and potentially death if consumed in large enough quantities.

    • To pets

      Rhododendron 'Silver Slipper' is also toxic to pets, including dogs, cats, and horses. Ingestion of any part of the rhododendron can lead to symptoms similar to those in humans, such as vomiting, diarrhea, drooling, weakness, incoordination, cardiac abnormalities, and in severe cases, potentially leading to coma and death. Even a small amount of the plant can be dangerous, so pets should be prevented from accessing these plants.

  • infoCharacteristics

    • Life cycle


    • Foliage type


    • Color of leaves


    • Flower color


    • Height

      4 feet (1.22 meters)

    • Spread

      4 feet (1.22 meters)

    • Plant type


    • Hardiness zones


    • Native area



  • money-bagGeneral Benefits

    • Ornamental Value: Rhododendron 'Silver Slipper' is highly prized for its beautiful pink flowers, which add color and visual interest to landscapes and gardens.
    • Wildlife Attraction: Its flowers can attract pollinators such as bees, butterflies, and hummingbirds, contributing to the local ecosystem's health.
    • Shade Tolerance: Rhododendrons, in general, can tolerate partial shade, making them suitable for planting under trees or in shadowed parts of the garden.
    • Erosion Control: The plant's root system can help stabilize soil on slopes and prevent erosion.
    • Evergreen Foliage: As an evergreen, Rhododendron 'Silver Slipper' provides year-round foliage, which ensures continuous greenery in the garden.
    • Cultural Significance: Rhododendrons have been cultivated for centuries and are often associated with traditional landscaping, particularly in Asian gardens.
    • Privacy: When planted in groups, Rhododendron 'Silver Slipper' can create natural privacy screens or hedges.
    • Versatility: This plant can be used in various landscape settings, including mixed borders, foundation plantings, and woodlands gardens.

  • 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

    • Photography subject: Due to its unique flowers, Rhododendron 'Silver Slipper' is often used by photographers looking for stunning natural subjects to capture, especially in botanical gardens and flower shows.
    • Garden design: The distinctive silver foliage and pink blooms of this Rhododendron make it a popular plant for thematic garden designs, particularly in silver and pink color schemes.
    • Wedding decor: Its elegant blossoms can be used in wedding decorations, providing a natural and sophisticated touch to bouquets, table settings, and venue adornments.
    • Bonsai: Some horticulturists use Rhododendron 'Silver Slipper' for bonsai due to its interesting foliage and the potential for stunning miniature tree forms.
    • Educational tool: Botany and horticulture programs may use this plant to teach about hybridization, flower structures, and plant care in educational settings.
    • Cultural festivals: The Rhododendron is often featured in cultural celebrations or flower festivals, where 'Silver Slipper' might be showcased for its beauty and rarity.
    • Art inspiration: Artists may draw inspiration from the distinct look of Rhododendron 'Silver Slipper', using it as a muse for paintings, illustrations, and textile designs.
    • Landscaping for wildlife: The plant can be included in garden designs intended to attract butterflies, bees, and birds, contributing to local biodiversity.
    • Screening plant: This Rhododendron can be planted in a row to create a natural screen, providing privacy while also adding an attractive visual element to a garden space.
    • Seasonal interest: In regions where it can thrive outdoors year-round, Rhododendron 'Silver Slipper' adds interest to the winter garden when few other plants are blooming.

Interesting Facts

  • bedFeng Shui

    The Rhododendron is not used in Feng Shui practice.

  • aquariusZodiac Sign Compitability

    The Rhododendron is not used in astrology practice.

  • spiralPlant Symbolism

    • Caution or Danger: Rhododendrons are known to have toxic leaves and are often considered a symbol of caution or warning. 'Silver Slipper' is no exception, reminding us to be aware of hidden risks.
    • Elegance and Wealth: The 'Silver Slipper' variety, with its silver-tinted leaves and sophisticated look, is often associated with elegance and the finer things in life, suggesting wealth or refined taste.
    • Survival and Endurance: Rhododendrons in general are hardy plants capable of surviving in challenging conditions. 'Silver Slipper', with its robust nature, symbolizes the ability to endure and thrive against the odds.
    • Home and Shelter: Traditionally, the rhododendron is also a symbol of home and taking shelter, as in their native habitats they often provide protection and home to various species.

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

    Azaleas, such as the Rhododendron 'Silver Slipper', prefer consistently moist but well-draining soil; they should not be allowed to dry out completely or be waterlogged. Water these azaleas when the top inch of soil feels dry, which is typically about once a week, but may vary depending on climate and weather conditions. When watering, it is best to use a gentle stream to soak the soil thoroughly around the roots without eroding the soil. Aiming for about one inch of water per week, ensuring it reaches the deeper roots, is a good rule of thumb, which translates to about 0.623 gallons per square foot if manually watering. During hot dry spells, additional watering may be necessary to maintain soil moisture.

  • sunLight

    Azaleas thrive in partial shade to filtered sunlight. The Rhododendron 'Silver Slipper' should be placed in a location where it can receive morning sunlight and afternoon shade, as this mimics its natural understory habitat. Direct, harsh afternoon sun can lead to foliage burn, so it’s essential to find a spot that offers protection during the hottest part of the day while still providing enough light to promote healthy growth and flowering.

  • thermometerTemperature

    Azaleas like Rhododendron 'Silver Slipper' grow best in temperatures ranging from 50 to 70 degrees Fahrenheit but can tolerate temperatures as low as 20 degrees Fahrenheit and as high as 80 degrees Fahrenheit. They are hardy and can survive short periods of more extreme temperatures but may require protection from severe frost or intense heat. The ideal temperature range ensures vibrant blooms and healthy foliage.

  • scissorsPruning

    Pruning azaleas like the Rhododendron 'Silver Slipper' is done to shape the plant, remove dead or diseased wood, and encourage bushier growth with more flowers. The best time to prune is immediately after the blooming period, usually in late spring or early summer, as pruning later in the season can remove the next year’s buds. Lightly trim the plant to maintain its shape and remove any spent flower clusters to promote healthier blooms for the following season.

  • broomCleaning

    As needed

  • bambooSoil

    Rhododendrons, including 'Silver Slipper', thrive in well-draining, acidic soil with a pH of 4.5 to 6.0. A mix of peat moss, pine bark, and perlite is ideal for aeration and moisture retention. Adding organic matter like leaf mold can also enrich the soil.

  • plantRepotting

    Rhododendrons like 'Silver Slipper' should be repotted every 2 to 3 years to refresh the soil and provide room for growth. It's best to repot in late winter or early spring before new growth begins.

  • water dropsHumidity & Misting

    Rhododendrons, such as 'Silver Slipper', prefer high humidity levels, typically between 40-60%. They thrive in a moist environment, but without wetting the plant's foliage to prevent disease.

  • pinSuitable locations

    • Indoor

      Place near bright window, maintain high humidity.

    • Outdoor

      Partial shade, protect from winter winds, mulch root zone.

    • Hardiness zone

      5-9 USDA

  • circleLife cycle

    Rhododendron 'Silver Slipper' (likely a cultivated variety of Rhododendron), commonly known as Rhododendron, begins its life as a seed, requiring stratification to break dormancy and germinate. After germination, the seedling grows into a juvenile plant, developing a root system and foliage but not yet flowering. As it matures, it enters the vegetative stage, where it produces leaves and branches, becoming a well-established shrub. Once mature enough, it enters the reproductive stage, typically marked by the production of showy flowers in the spring, which are often used in landscaping for their ornamental value. Following pollination, flowers develop into seed capsules that, when mature, release seeds, thereby completing the life cycle. Some Rhododendrons can also propagate vegetatively through cuttings or layering, which can result in quicker floral production than seed-grown plants.

  • sproutPropogation

    • Propogation time

      Early Spring

    • The Rhododendron 'Silver Slipper', commonly known as the Rhododendron, is typically propagated through semi-hardwood cuttings. This method is most effectively carried out during the late summer, as this is when the plant's new growth has begun to mature and harden slightly. To propagate, one must select healthy stems with several sets of leaves, cutting them to lengths of about 4 to 6 inches (approximately 10 to 15 centimeters). The lower leaves are then removed, and the cut end dipped in a rooting hormone to encourage root development. The prepared cuttings should be inserted into a pot filled with a well-draining propagation medium such as a mix of peat and perlite. These should then be kept under high humidity and indirect light until rooting occurs, which typically takes a few weeks to a couple of months. Regular monitoring for moisture levels is crucial during this time to ensure the cuttings do not dry out or become waterlogged.