Lungwort Pulmonaria 'Blue Ensign'

👤 Non-toxic to humans
🐾 Non-toxic to pets
🌸 Blooming
🍪 Not edible
‍🌱 Easy-care
lungwort 'Blue Ensign'


Pulmonaria 'Blue Ensign', commonly known as the lungwort, is a perennial plant valued for its early spring blooms and decorative foliage. Lungworts characteristically have a clumping growth habit with broad, fuzzy leaves. The leaves of 'Blue Ensign' are particularly noted for their solid green color, without the white spots or mottling that can be found on the leaves of other lungwort varieties. The flowers of lungwort are truly striking. 'Blue Ensign' stands out with its vivid blue blossoms that emerge from pinkish buds. As the bell-shaped flowers mature, they create a charming display that can be a true highlight in a shade garden during their blooming season. The flowers are arranged on stems that rise above the foliage, bringing vivid color to the plant's overall appearance. The contrast between the bright blue flowers and rich green leaves creates a pleasing visual effect in garden settings, especially when planted in masses or along borders where their beauty can be appreciated up close.

Plant Info
Common Problems

About this plant

  • memoNames

    • Family


    • Synonyms

      Lungwort, Bethlehem Sage, Soldiers and Sailors.

    • Common names

      Pulmonaria angustifolia 'Blue Ensign'

  • skullToxicity

    • To humans

      Lungwort, specifically Pulmonaria 'Blue Ensign', is generally considered non-toxic to humans. There are no well-documented cases of poisoning from ingesting this plant, and it is not typically associated with adverse effects. However, as with any plant, individual allergic reactions or sensitivities can occur, so it is always wise to exercise caution and not consume plant material that is not commonly recognized as food.

    • To pets

      Lungwort, specifically Pulmonaria 'Blue Ensign', is also generally considered non-toxic to pets. There is no evidence to suggest that it poses a significant risk of poisoning to animals such as cats and dogs. As with humans, it is still advisable to discourage pets from ingesting plants, as individual animals may have different sensitivities or allergic reactions.

  • infoCharacteristics

    • Life cycle


    • Foliage type


    • Color of leaves


    • Flower color


    • Height

      1 foot (30 cm)

    • Spread

      1 foot 2 inches (35 cm)

    • Plant type


    • Hardiness zones


    • Native area



  • money-bagGeneral Benefits

    • Shade Tolerance: Thrives in shady areas where other plants might struggle to grow.
    • Attracts Pollinators: Entices bees and butterflies, supporting biodiversity.
    • Early Bloomer: Produces flowers in early spring, adding early color to gardens.
    • Low Maintenance: Requires minimal care once established, making it ideal for busy gardeners.
    • Drought Resistant: Tolerant of dry soil conditions once established.
    • Ground Cover: Spreads effectively, which can help suppress weeds.
    • Ornamental Value: Offers vibrant blue flowers and attractive foliage for aesthetic appeal.
    • Cold Hardy: Capable of withstanding cold temperatures and frost.
    • Non-Invasive: Unlike some plants, it does not aggressively take over the garden.

  • 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

    • Pulmonaria 'Blue Ensign', commonly known as Lungwort, can be used as natural dye for fabrics, providing a range of colors from green to brown depending on the mordant used.
    • The rough texture of Lungwort leaves makes for an interesting addition to tactile sensory gardens, particularly for educational purposes to help children and visually impaired individuals to experience varied plant textures.
    • Lungwort leaves can be used in compost piles, where their high nitrogen content helps to accelerate the composting process of organic matter.
    • The plant has been used traditionally to line nests as its leaves are somewhat borage-like and may deter pests due to their hairy texture.
    • Lungwort can be planted under fruit trees where it will not only add visual interest but also help to maintain soil moisture and suppress weeds.
    • Leafy branches of Lungwort may be used in floral arrangements to provide a verdant backdrop for more colorful blossoms due to their unique spotted foliage.
    • The plant can serve as an indicator for pH levels in the soil, thriving in more alkaline conditions and alerting gardeners to soil conditions that may be unsuitable for other plants.
    • Gardeners can use Lungwort as ground cover to minimize erosion on sloped areas due to its spreading form which helps stabilize the soil.
    • In a wildlife garden, Lungwort can provide early nectar for pollinators such as bees and butterflies emerging in the spring.
    • Lungwort's leaves can be used as a natural mulch around other plants to help retain moisture in the ground and add organic matter to the soil as they decompose.

Interesting Facts

  • bedFeng Shui

    The Lungwort is not used in Feng Shui practice.

  • aquariusZodiac Sign Compitability

    The Lungwort is not used in astrology practice.

  • spiralPlant Symbolism

    • Resilience and Tenacity: Pulmonaria, also known as Lungwort, due to its ability to thrive in varying conditions and its rough, hairy leaves which gives it a resilient appearance.
    • Health and Healing: Historically, Lungwort has been associated with treating lung infections based on the doctrine of signatures, due to its lung-shaped leaves.
    • Hope and Restoration: Its early spring blooms and the transformation of its flowers from pink to blue symbolize hope and the renewal associated with the changing of seasons.
    • Uniqueness and Individuality: The spotted or mottled leaves of the Lungwort are unique to each plant, symbolizing the idea of each individual's unique traits and beauty.

Every week
2500 - 10000 Lux
Every 2-3 years
As needed
  • water dropWater

    Lungwort should be watered deeply and thoroughly to ensure the soil is moist, especially during spring and summer when the plant is actively growing. Check the soil moisture and water approximately once a week, though this may vary depending on climate conditions such as heat and humidity. It typically needs about 1 inch of water per week, whether from rainfall or manual watering. During hot, dry periods, increase the frequency to prevent the soil from drying out completely, but always avoid overwatering as this can lead to root rot. In the winter, reduce watering as the plant enters dormancy and requires less moisture.

  • sunLight

    Lungwort prefers partial shade to full shade, thriving under the dappled light beneath larger plants or trees. Avoid placing it in full sun, as the leaves can become scorched and lose their vibrant colors. The best spot would be a north-facing garden or an area that receives morning sunlight with afternoon shade to protect it during the hottest part of the day.

  • thermometerTemperature

    Lungwort is hardy and can tolerate a wide range of temperatures, with an ideal growing range between 50°F to 75°F. It can survive minimum winter temperatures down to -20°F when properly mulched and established. During the summer months, it is essential to ensure that the plant does not overheat, especially when the temperatures climb over 80°F, as heat stress can damage the plant.

  • scissorsPruning

    Lungwort should be pruned to remove any damaged or spent leaves and to promote bushier growth. The best time for pruning is immediately after flowering, usually in late spring or early summer. Cut back the flower stems and any old foliage to encourage fresh leaves to develop. Pruning annually helps maintain the plant's health and appearance.

  • broomCleaning

    As needed

  • bambooSoil

    The best soil mix for Lungwort (Pulmonaria 'Blue Ensign') is well-draining soil enriched with compost or other organic matter, with a pH range of 6.0 to 7.0 for optimal growth.

  • plantRepotting

    Lungwort usually does not require frequent repotting and can be repotted every 3-4 years, or when it has clearly outgrown its current container.

  • water dropsHumidity & Misting

    Lungwort thrives in a environment with average to high humidity levels but is quite adaptable and does not require specific humidity conditions.

  • pinSuitable locations

    • Indoor

      Place Lungwort in bright, indirect light and moist, rich soil.

    • Outdoor

      Plant Lungwort in partial shade with moist, well-draining soil.

    • Hardiness zone

      3-8 USDA

  • circleLife cycle

    Pulmonaria 'Blue Ensign', commonly known as Lungwort, begins its life cycle as a seed, which germinates in moist soil in spring. Seedlings develop into rosettes of basal leaves that are often spotted or mottled, characteristic of many Pulmonaria species. As the plant matures, it develops flowering stems in early to mid-spring, showcasing clusters of funnel-shaped blue flowers that are attractive to pollinators. After flowering, the plant sets seed, which can self-sow in ideal conditions, perpetuating the life cycle. Throughout the summer, Lungwort enters a vegetative stage, focusing on leaf growth and energy accumulation. With the onset of colder weather in autumn, the plant's foliage may die back, and it enters a period of dormancy over the winter, only to resprout with new growth the following spring.

  • sproutPropogation

    • Propogation time


    • Pulmonaria 'Blue Ensign', commonly known as Lungwort, can be propagated using several methods, but division is the most popular and effective. The best time for division is in the early spring or after the flowering season in late spring to early summer when the plant is not in active bloom. To propagate by division, carefully lift the entire plant from the ground and gently tease apart the clumps into smaller sections, making sure each section has a good amount of roots. These sections can then be planted directly into their new locations in the garden, spaced approximately 12 inches (30 centimeters) apart to allow for growth. Water the new divisions well to help establish them.