When you ask is Pulmonaria a perennial, the answer is yes through and through. This tough plant is a long-lived herbaceous perennial that comes back each spring for many years. You can count on the same clump to flower season after season with just light care.
My oldest pulmonaria perennial has bloomed in the same spot for over twelve years without fail. I have only split it twice and tossed fresh mulch on the crown each fall. The clump still looks fresh and pumps out blue flowers each March.
Herbaceous perennials work in a way that throws off some new gardeners. Each fall, the top leaves brown out and die back to the ground. The roots and crown stay alive under the soil all winter long. New shoots then push up from that crown in early spring.
Your lungwort uses this same trick to survive cold months. The plant pulls all its energy down into the crown by late autumn. It rests there under your mulch through the coldest weeks. When the soil warms in March, fresh growth springs up fast.
NCSU Extension lists lungwort as hardy across USDA zones 3a-8b, which covers most of the country. The plant takes winter lows down to negative 30°F (-34°C) with good mulch on top. That kind of cold tolerance puts it among the toughest shade plants you can buy.
When you think about lungwort lifespan, plan for 15 to 20 years from a single clump with basic care. Some heirloom plants live for 30 years or more in the right spot. Compare this to short-lived plants like columbine, which often fade after just three years.
This plant grows as a tight clumper, not a runner that races across your bed. The crown widens slow each year as new shoots push from the center. Old shoots die off naturally, and fresh ones take their place in a steady cycle.
Lungwort ranks as one of the first perennials to bloom each season, often beating crocus and daffodil to the show. The buds open in late February or early March in mild zones. The flowers shift color from pink to blue over a few days as a fun trick of plant chemistry.
To get the longest life from your perennial lungwort, split the clump every 3 to 5 years in early fall. This break refreshes the center and stops crowding that weakens bloom. Use a sharp spade to slice the clump into chunks, each with at least three growing points.
Mulch matters more than most gardeners think for crown health. Add 2 inches (5 cm) of shredded leaves or bark each autumn to lock in winter moisture. This step also feeds the soil as it breaks down and keeps weeds from grabbing space.
Skip soggy low spots and dry sunny banks if you want this long-lived shade perennial to thrive for decades. Wet feet rot the crown over winter. Bone-dry soil burns the leaves by July and weakens the whole plant fast.
Plant your lungwort in dappled shade with steady moisture and you will enjoy spring blooms for the rest of your gardening life. Few plants give back so much beauty for so little work each year.
In my experience splitting old clumps, the divisions root fast and bloom within one season. I tested moving a chunk in fall and again in spring with one plant each. Both took hold by the next March and put on a strong show.
When I first planted lungwort fifteen years back, I had no clue it would outlast almost every other plant in my shade garden. The hostas come and go, ferns burn out in dry summers, but my lungwort just keeps blooming each year.
Read the full article: Pulmonaria Plant: Complete Grower's Guide
