Diana Clare Pulmonaria (Diana Clare lungwort) care

Light

Most houseplants sulk in a dim corner. Diana Clare Pulmonaria is one of the handful that doesn't. Full to part shade gives the cleanest silver foliage and best flowering. Bright sun, especially over dry soil, scorches leaves; it tolerates quite deep shade reliably. The tell that you've pushed even a low-light plant too far is soil that stays wet for a week — the plant has stopped transpiring, which means it's stopped using water, which is one short step from rot.

Watering

Water diana clare pulmonaria keep soil evenly moist; water every 4-6 days in dry spells, more in pots. The actual day count varies with pot size, light, and season — the finger test (or lifting the pot to feel its weight) is more reliable than a fixed calendar. Empty any drainage saucer afterwards so the pot isn't sitting in water. Dislikes drought, which causes wilting and mildew on the long silver leaves. Mulch with leaf mould to retain moisture; settled clumps in cool shade handle short dry periods.

Soil and pot

Diana Clare Pulmonaria grows best in moist, humus-rich, well-drained loam. Prefers fertile woodland soil rich in organic matter, moist but never waterlogged. Neutral to slightly alkaline pH is ideal. Improve with compost or leaf mould; avoid hot, dry positions. A pot with a working drainage hole is non-negotiable for this species — even free-draining mix will turn soggy in a closed planter. If you love the look of a decorative pot without a hole, use it as a cachepot around an inner nursery pot you can lift out to water.

Humidity and temperature

Diana Clare Pulmonaria sits happiest at around Ambient outdoor humidity humidity and -28 to 24°C (-18 to 75°F). A hardy shade perennial needing no special humidity; it naturally favours the cool, moist conditions of shaded borders and woodland gardens. If you keep the room above year-round and avoid placing the plant near a cold draught, a hot radiator, or an air-conditioning vent, you have already handled the two biggest indoor stressors.

Fertilising

Feed diana clare pulmonaria sparingly. Undemanding; an annual spring mulch of compost or leaf mould usually meets its needs. A light balanced feed in spring on poor soils enhances the foliage display. Avoid excess nitrogen, which softens growth and invites mildew. Skip fertiliser entirely on a stressed, recently-repotted, or actively wilting plant — fertiliser salts make damage worse, not better. Wait for a round of healthy new growth before resuming a feeding rhythm.

Common problems

Below are the issues we see most often on diana clare pulmonaria in the Growli community. Each is annotated with the most common cause so you know where to start.

• Powdery mildew — Less prone than older lungworts but still possible in dry shade. Keep soil moist, shear tired foliage, and improve airflow to limit it.
• Scorched or dulled silver leaves — Too much sun or dry roots burns and fades the foliage. Relocate to deeper shade and keep the root zone moist and mulched.
• Wilting in drought — Long leaves flag quickly when dry. Water deeply and mulch; avoid planting where tree roots strip soil moisture.
• Slug and snail damage — Soft spring growth is grazed in damp shade. Protect emerging crowns with barriers or wildlife-safe slug controls.

Propagation

Divide clumps after flowering or in autumn, replanting healthy sections in moist, enriched soil. This named hybrid is propagated by division to remain true to type; seedlings will not match the parent. Propagation is the cheapest, most satisfying way to expand a collection — and it doubles as insurance against losing a mature plant to an accident. Take a backup cutting once the parent is established and healthy.

Toxicity to pets

Diana Clare Pulmonaria is mildly toxic to pets. Not individually listed by the ASPCA, so its pet status is unconfirmed; Pulmonaria contains pyrrolizidine alkaloids and saponins (classes the ASPCA flags as toxic) and bristly trichomes may irritate skin. Treat with caution and verify with a vet — do not assume pet-safe. If you keep cats, dogs, or curious children in the house, weigh placement carefully — a high shelf or a hanging planter is enough for casual safety. For severe ingestion incidents, call your local vet and the ASPCA Animal Poison Control Center (in the US, 888-426-4435).

Pet-safety status is sourced from the ASPCA Toxic and Non-Toxic Plant List, which catalogues the most-asked-about plants for cats, dogs, and horses.

Diana Clare Pulmonaria deep-dive guides

Every aspect of diana clare pulmonaria care, each with its own calibrated guide:

• Diana Clare Pulmonaria watering schedule
• Diana Clare Pulmonaria light requirements
• Best soil mix for diana clare pulmonaria
• Diana Clare Pulmonaria fertilizing guide
• When to repot diana clare pulmonaria
• How to propagate diana clare pulmonaria
• Diana Clare Pulmonaria growth rate & size
• Diana Clare Pulmonaria cold hardiness
• Diana Clare Pulmonaria temperature & humidity
• Is diana clare pulmonaria toxic to cats & dogs?
• Is diana clare pulmonaria toxic to cats?
• Is diana clare pulmonaria toxic to dogs?
• Getting diana clare pulmonaria to bloom

Featured in these plant shortlists

Diana Clare Pulmonaria qualifies for 6 curated Growli shortlists — each one filtered objectively from our structured plant-care library, so the selection is consistent and checkable:

• Best low-light houseplants — Houseplants that need no direct sun and cope with a north-facing room or a spot well back from a window.
• Best drought-tolerant houseplants — Houseplants that prefer to dry out — forgiving of forgotten watering and ideal for travel or busy weeks.
• Best houseplants for beginners — Forgiving of irregular light and watering — the houseplants least likely to die in a new plant parent’s first season.
• Best flowering houseplants — Indoor plants grown for their blooms — selected from the flowering species in Growli’s plant-care library.
• Best houseplants for a cool room — Houseplants that tolerate cool conditions down to about 10°C — for an unheated spare room, hallway, porch or a home kept cool.
• Best fast-growing houseplants — Houseplants documented as fast or vigorous growers — quick to fill a pot, cover a pole or trail down a shelf.
• Browse all 29 plant shortlists — pet-safe, low-light, drought-tolerant and more

Related guides

Diana Clare Pulmonaria is also commonly called Diana Clare lungwort or silver lungwort.

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