Queen of Night Tulip (Black Tulip) care

Light

Queen of Night Tulip needs sun on the leaves, not just bright ambient room light. Full sun produces the tallest, strongest stems and deepest flower colour. Position in a south- or west-facing border with at least 6 hours of direct sun. Partial shade results in weak, lax stems that require staking. A south or west-facing windowsill in the northern hemisphere is the default; anywhere else, expect the plant to stretch and pale out within a season.

Watering

Water queen of night tulip water at planting; rely on rainfall during growth; dry during dormancy. 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. Plant bulbs in autumn and water in well. Spring rainfall is generally sufficient in temperate climates. The dark flower colour shows best in bright, dry conditions. Avoid overhead watering during flowering, which promotes botrytis on petals. Allow soil to dry completely during summer dormancy.

Soil and pot

Queen of Night Tulip grows best in fertile, well-drained loam; ph 6.0–7.0. Rich, loamy soil produces the best stem length and flower quality. Incorporate well-rotted garden compost at planting but maintain sharp drainage — waterlogging kills bulbs. In heavy clay, plant on a layer of coarse sand for drainage. 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

Queen of Night Tulip sits happiest at around Low to moderate; 40–60% RH during growing season humidity and -15°C to 18°C (optimal spring growth: 8–15°C) (5°F to 64°F (optimal spring growth: 46–59°F)). Tolerates typical UK spring humidity but high moisture on petals and foliage encourages grey mould (Botrytis tulipae). Ensure good air circulation between plants by spacing bulbs 10–15 cm apart. 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 queen of night tulip sparingly. Top-dress with a balanced granular fertiliser (e.g. Growmore) at bulb emergence in late winter. Apply a high-potassium liquid feed (tomato fertiliser) as buds form. If lifting and storing annually, feed is less critical but extends bulb viability for the following season. 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 queen of night tulip in the Growli community. Each is annotated with the most common cause so you know where to start.

• Botrytis tulipae (tulip fire) — The most serious disease of garden tulips — causes scorched-looking, twisted shoots, brown-spotted petals, and grey mould. Destroy affected plants and soil immediately; do not compost. Avoid replanting tulips in the same spot for 3 years. Plant in well-ventilated positions.
• Poor re-flowering (annual decline) — 'Queen of Night', like most large-flowered hybrid tulips, rarely blooms reliably in subsequent years in UK conditions without ideal drainage and summer baking. Treat as an annual for best display, or lift, dry, and store bulbs in a cool, airy shed for replanting each autumn.
• Stem collapse (toppling) — Tall stems are vulnerable to wind and rain. Plant in sheltered positions or against a wall. Staking with pea sticks or grow-through supports helps in exposed gardens. Planting at the correct depth (three times the bulb height) also produces stronger stems.

Propagation

Lift bulbs after foliage yellows in late spring/early summer; remove offsets and store parent and offsets separately in cool, dry conditions. Replant offsets in autumn — smaller offsets may take 1–2 years to reach flowering size. Not grown from seed in cultivation (named cultivar). 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

Queen of Night Tulip is toxic to pets. Tulipa gesneriana cultivars contain tulipalin A and B (allergenic lactones), concentrated heavily in the bulb tunics. ASPCA lists tulips as toxic to dogs, cats, and horses. Symptoms include oral irritation, drooling, vomiting, diarrhoea, and potential cardiac effects with large ingestion. Human handlers may develop allergic contact dermatitis ('tulip fingers') from repeated bulb handling — wear gloves. 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.

Queen of Night Tulip deep-dive guides

Every aspect of queen of night tulip care, each with its own calibrated guide:

• Queen of Night Tulip watering schedule
• Queen of Night Tulip light requirements
• Best soil mix for queen of night tulip
• Queen of Night Tulip fertilizing guide
• When to repot queen of night tulip
• How to propagate queen of night tulip
• Queen of Night Tulip growth rate & size
• Queen of Night Tulip cold hardiness
• Queen of Night Tulip temperature & humidity
• Is queen of night tulip toxic to cats & dogs?
• Is queen of night tulip toxic to cats?
• Is queen of night tulip toxic to dogs?
• Getting queen of night tulip to bloom

Featured in these plant shortlists

Queen of Night Tulip qualifies for 4 curated Growli shortlists — each one filtered objectively from our structured plant-care library, so the selection is consistent and checkable:

• Best flowering houseplants — Indoor plants grown for their blooms — selected from the flowering species in Growli’s plant-care library.
• Houseplants toxic to cats & dogs — The common houseplants the ASPCA lists as toxic to cats and dogs — the ones to keep out of reach, each with its symptoms and a safe alternative.
• Best houseplants for full sun — Houseplants that want direct sun — the species for a hot south or west-facing windowsill where shade-lovers scorch.
• 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.
• Browse all 29 plant shortlists — pet-safe, low-light, drought-tolerant and more

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Queen of Night Tulip is also commonly called Queen of Night Tulip or Black Tulip.

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