Pulmonaria, commonly known as lungwort, is a fascinating and charming perennial frequently found in shady garden spots. Its eye-catching, spotted foliage and vibrant, color-changing flowers make it an absolute favorite among gardeners looking to brighten up dark corners.
What Is Pulmonaria?
Part of the Boraginaceae family, Pulmonaria is a hardy perennial known for its distinctive mottled leaves and delicate, bell-shaped flowers. These resilient plants are highly valued for their ability to thrive in partial to full shade, making them the perfect candidate for woodland settings, underplanting trees, and shaded border gardens.
| Pulmonaria (Lungwort) Quick Facts | |
|---|---|
| Scientific Name | Pulmonaria spp. |
| Plant Type | Herbaceous Perennial |
| Sun Exposure | Partial shade to full shade |
| Soil Type | Moist, well-draining, humus-rich |
| Hardiness Zones | USDA Zones 3-7 |
Blooming Information
Pulmonaria plants are admired for their early blooming season, which typically kicks off in early to mid-spring (often alongside spring bulbs). The flowers are famous for their unique color transition—starting as pink and magically changing to a stunning blue-violet as they mature. This means you will often see multiple colors on the same stem!
The blooms are funnel-shaped and are highly attractive to early-season pollinators like bees. To encourage more blooms, maintain consistently moist soil and trim away any dead or damaged leaves as the season progresses.
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Growing Conditions for Pulmonaria
Pulmonaria is a versatile plant, capable of adapting to different garden environments. However, to achieve the best growth and those famous spotted leaves, ensure the following conditions are met:
- Light: Partial to full shade is ideal. While they can tolerate some morning sun in cooler climates, harsh afternoon sun will scorch their delicate leaves.
- Soil: Pulmonaria thrives in moist but well-drained soil. The plant prefers slightly acidic to neutral soil, with optimal pH levels between 6.0 and 7.0.
- Water: Keep the soil consistently moist, especially during the hot summer months. However, ensure the soil drains well to avoid waterlogged, rotting roots.
- Spacing: Space plants 30 to 45 cm (12-18 inches) apart to allow for proper air circulation, which helps prevent mildew.
- Temperature: Pulmonaria does exceptionally well in cooler climates and is winter-hardy in USDA zones 3-7.
Planting and Care Tips
When it comes to planting pulmonaria, timing is everything. It’s best to plant them in autumn or early spring, giving the root system time to establish before extreme temperatures hit. Ensure the rootball is planted in a generous hole, and mix in well-rotted leaf mold or compost to provide a nutrient-rich foundation.
Pulmonaria serves beautifully as an edging plant, nestled in rock gardens, or mass-planted in shady border gardens. Regularly remove dead leaves to keep the plant looking fresh and to prevent fungal diseases from taking hold.
Popular Pulmonaria Varieties
There are numerous cultivars to choose from, each offering unique leaf patterns and flower colors:
- Pulmonaria ‘Blue Ensign’: Known for its deep, solid blue flowers and solid green foliage (no spots!).
- Pulmonaria ‘Raspberry Splash’: Famous for its bright pink and violet flowers contrasting with heavily silver-spotted foliage.
- Pulmonaria ‘Majeste’: This variety boasts striking, almost entirely silver leaves with soft pink flowers that fade to blue.
- Pulmonaria ‘Dora Bielefeld’: With pale pink flowers and green leaves, it provides a softer, pastel look in spring gardens.
Common Pests and Diseases
Like all shade-loving plants, pulmonaria can be susceptible to a few issues:
- Powdery Mildew: This fungal disease thrives in humid conditions and often appears as a white powder on the leaves after the plant finishes blooming. To manage it, ensure good air circulation, avoid overhead watering, and cut back severely affected foliage.
- Slugs and Snails: These pests love the same cool, shady, moist environments that pulmonaria thrives in. Hand-picking, copper tape, or organic slug bait can help keep them at bay.
Propagation Techniques
Pulmonaria can be propagated easily. Root division is the most common and successful technique. In early autumn or right after they finish blooming in spring, carefully dig up the plant, divide the rootball into smaller sections, and replant them immediately. This helps rejuvenate older, woody plants.
Additionally, pulmonaria can self-seed readily in the garden, although the resulting seedlings may not look identical to the parent cultivar.
Garden Design Ideas & Companions
Pulmonaria pairs beautifully with many other shade-tolerant plants. Use it alongside other spring-flowering woodland plants, such as hellebores, bleeding hearts, and ferns.
The plant’s heavily mottled leaves provide a fantastic, long-lasting contrast to solid-colored foliage plants like hostas and brunnera. Whether you’re looking to create a lush, shady border or want an attractive ground cover, pulmonaria is the perfect addition.
Frequently Asked Questions (FAQ)
Do you cut back Pulmonaria in the fall?
It is generally best to leave the foliage intact during the fall and winter to help protect the crown of the plant from extreme cold. Wait until early spring, just before the new growth emerges, to cut back the old, tattered leaves from the previous year.
Can Pulmonaria grow in pots?
Yes! Pulmonaria can thrive in container gardens as long as the pot has excellent drainage holes and the potting mix is kept consistently moist but not soggy. Place the container in a shaded area.
Is Pulmonaria deer resistant?
Yes, Pulmonaria is considered highly deer and rabbit resistant. The slightly hairy texture of the leaves makes it unpalatable to most grazing wildlife, making it a safe choice for woodland gardens.
