Edging Lobelia Lobelia erinus Super Star = 'Weslosu' (PBR) (Star Series)

☠ Toxic to humans
🐾 Toxic to pets
🌸 Blooming
🍪 Not edible
‍🌱 Easy-care
trailing lobelia [Super Star]


The Lobelia erinus Super Star, known simply as Lobelia, is part of the Star Series and is distinguished by its vivid and showy flowers. The blooms are notable for their rich coloration, typically a striking deep blue with a white central eye that adds a star-like pattern within each flower. The petals are delicate and fan-shaped, radiating around the central eye, giving an overall celestial appearance to the floral display. The foliage of Lobelia is dense, with small, green leaves that provide a lush background for the contrasting flowers. The leaves are often narrow and lance-shaped, and they create a textured mass which can be seen underneath the profusion of blooms. The plant has a bushy habit, spreading out to form a blanket of color that works exceptionally well in providing ground cover or spilling over containers and hanging baskets. Overall, the combination of striking blue flowers with the white star centers against the deep green foliage makes the Lobelia erinus Super Star a standout among garden plants. Its vibrant blooms attract pollinators such as bees and butterflies, making it not only a visual highlight in a garden setting but also an asset for supporting local ecology. Its habit of dense growth and abundant flowering creates a spectacular display that can last throughout the blooming season.

Plant Info
Common Problems

About this plant

  • memoNames

    • Family


    • Synonyms

      Edging Lobelia, Garden Lobelia, Trailing Lobelia, Blue Lobelia, Super Star Lobelia, Annual Lobelia

    • Common names

      Lobelia erinus 'Weslosu'

  • skullToxicity

    • To humans

      Lobelia, specifically the Lobelia erinus variety, is known to contain toxins that can be harmful if ingested in significant quantities. It contains pyridine alkaloids which can lead to symptoms such as nausea, vomiting, diarrhea, cough, dizziness, tremors, and an increased heart rate. In severe cases, it may lead to more serious symptoms, including convulsions or coma. It is advisable to avoid ingestion and to keep the plant out of reach of children who might accidentally consume it.

    • To pets

      Lobelia is also toxic to pets, such as dogs and cats, if ingested. Similar to its effects on humans, the plant can cause symptoms in pets including vomiting, diarrhea, excessive salivation, lethargy, and in severe cases, more critical symptoms like tremors or difficulty breathing. Pet owners should keep Lobelia out of reach and consult a veterinarian immediately if they suspect their pet has ingested any part of the plant.

  • infoCharacteristics

    • Life cycle


    • Foliage type


    • Color of leaves


    • Flower color


    • Height

      6 inches [15 cm]

    • Spread

      1 foot [30 cm]

    • Plant type


    • Hardiness zones


    • Native area

      South Africa


  • money-bagGeneral Benefits

    • Easy to grow - Lobelia erinus Super Star is known for its ease of cultivation, making it suitable for gardeners of all skill levels.
    • Vibrant colors - This plant produces vividly colored flowers that can brighten up any garden space.
    • Long blooming period - It offers a long flowering season, providing color and interest from late spring to early fall.
    • Attracts pollinators - The blooms can attract beneficial insects such as butterflies and bees to the garden.
    • Compact size - With its compact growth habit, it is ideal for borders, containers, and small garden spaces.
    • Heat tolerance - It is tolerant to heat, making it suitable for sunny spots in the garden during the warmer months.
    • Versatile use - Can be used in hanging baskets, window boxes, or as an edging plant, offering versatility in garden design.
    • Low maintenance - Requires relatively low maintenance, which can be ideal for those looking for plants that do not require constant care.

  • 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

    • Lobelia erinus Super Star can be used as a natural indicator for soil pH; when the leaves show a color change, this can suggest the soil is either too acidic or alkaline.
    • Intricate pressed flower art can be created using the vibrant blooms of the Lobelia, particularly due to their deep blue and violet colors.
    • The plant can be used in educational settings for botany lessons, particularly to demonstrate plant growth habits and flowering stages.
    • Photographers and artists often utilize the striking Lobelia as a subject or inspiration for color and composition in their work.
    • As a companion plant, Lobelia may help deter certain pests from more susceptible plants in a garden setting.
    • Lobelia can be used in sensory gardens due to its texture and color, providing a tactile and visual experience.
    • Edible flower enthusiasts might use Lobelia's blooms as a colorful garnish for salads and desserts, though they're not widely known for their taste.
    • The Lobelia plant can be used in miniature gardens or fairy gardens as it provides a small-scale ground cover that mimics larger landscape features.
    • Used in craft projects, the flowers of Lobelia can be dried and incorporated into bookmarks, cards, and other paper items.
    • Gardeners may use Lobelia's characteristic cascade of flowers to create living curtains or drapes within a garden trellis or arbor setup.

Interesting Facts

  • bedFeng Shui

    The Lobelia is not used in Feng Shui practice.

  • aquariusZodiac Sign Compitability

    The Lobelia is not used in astrology practice.

  • spiralPlant Symbolism

    • Uniqueness: The unique speckled pattern on the petals of the Lobelia erinus Super Star could symbolize individuality and the beauty of being different.
    • Devotion: With its bright, abundant flowers, this plant can be associated with devotion and a passionate nature, representing an unwavering commitment to a person, cause, or endeavor.
    • Transformation: This particular Lobelia, being a cultivated variety, may also symbolize transformation and improvement, reflecting the journey from its original form to a cultivated variety bred for specific desirable traits.

Every 2-3 days
500 - 2500 Lux
Every year
Spring to Summer
As needed
  • water dropWater

    Lobelia, commonly known as edging lobelia or garden lobelia, should be watered regularly to keep the soil consistently moist but not waterlogged. During active growth in spring and summer, watering might be needed once or twice a week, depending on weather conditions. It is best to water deeply, providing about 1 to 2 gallons per square yard every week, allowing for adjustments based on rainfall and temperature. Ensure the plant has good drainage to prevent root rot. In winter, reduce watering since the plant requires less moisture during this dormant period.

  • sunLight

    For edging lobelia, the best light conditions include full sun to part shade. An ideal spot would be one that gets bright, indirect light for most of the day, with some protection from the intense midday sun, especially in hotter climates. A location with morning sunlight and afternoon shade is often suitable for vibrant growth and bloom production.

  • thermometerTemperature

    Edging lobelia thrives in moderate temperatures and prefers a range of 60°F to 75°F for ideal growth conditions. It can tolerate a minimum temperature down to 40°F and maximum up to around 90°F; however, prolonged exposure outside of the ideal range may stress the plant. During extreme heat, providing afternoon shade can help in maintaining suitable temperature conditions.

  • scissorsPruning

    Pruning edging lobelia is important to maintain its shape and encourage bushier growth and more flowers. Regularly deadhead spent blooms and trim back any leggy stems. This can be done every few weeks during the flowering season. The best time for a major trim is midsummer when plants can become sparse; cutting them back by half can stimulate new growth and a fresh flush of blooms.

  • broomCleaning

    As needed

  • bambooSoil

    Lobelia, commonly known as Edging Lobelia, thrives in a well-drained, moist soil rich in organic matter. A good soil mix for Edging Lobelia would be equal parts peat, loam, and sand to ensure good drainage and fertility. The soil pH should be slightly acidic to neutral, ranging between 6.0 and 7.0.

  • plantRepotting

    Edging Lobelia should be repotted every one to two years to refresh the soil and provide room for growth. It's best to repot in the spring before the onset of the growing season when the plant is not in full bloom.

  • water dropsHumidity & Misting

    Edging Lobelia prefers moderate to high humidity levels, ideally around 50-70%. Consistently high humidity promotes lush growth and vibrant blooms, but good air circulation is also necessary to prevent disease.

  • pinSuitable locations

    • Indoor

      Provide bright light, moist soil, and cool temperatures for indoor Edging Lobelia.

    • Outdoor

      Place in partial shade, use moist, well-draining soil for outdoor Edging Lobelia.

    • Hardiness zone

      10-11 USDA

  • circleLife cycle

    The life of the Lobelia erinus Super Star, commonly known as the Edging Lobelia, begins with seed germination which occurs in warm, well-drained soil conditions with consistent moisture. This is followed by the seedling stage where the first true leaves develop and the plant starts photosynthesizing to fuel its growth. As the plant enters the vegetative stage, it produces a profusion of foliage and prepares for the flowering stage, during which the Lobelia erinus Super Star displays a vibrant array of star-shaped flowers that can attract pollinators. Following the peak flowering period, the plant sets seeds which can be dispersed to produce new plants, continuing the cycle. As an annual in many climates, the Lobelia erinus Super Star completes its life cycle within one growing season and dies off with the onset of the first frost, though in milder climates or with protection, it may behave as a perennial.

  • sproutPropogation

    • Propogation time

      Spring to Summer

    • Lobelia erinus, commonly known as edging lobelia, is often propagated through seed sowing. The most popular method is to start the seeds indoors about 10 to 12 weeks before the last frost date to allow them to grow into strong seedlings ready for transplanting once the danger of frost has passed. To propagate edging lobelia by seeds, prepare a tray with well-draining seed starting mix, sprinkle the tiny seeds on the surface, and gently press them into the soil without covering them, as they need light to germinate. Keep the soil consistently moist but not waterlogged and maintain a temperature around 70-75 degrees Fahrenheit (21-24 degrees Celsius). Germination typically occurs within 14 to 21 days. Once the seedlings have developed a couple of sets of true leaves, they can be thinned out or transplanted into individual pots to grow on until they are ready to be moved outdoors.