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Plant care

Miss Jekyll love-in-a-mist (love-in-a-mist) care

Nigella damascena 'Miss Jekyll'

Also called Miss Jekyll love-in-a-mist, love-in-a-mist, devil-in-the-bush.

RHS H5USDA 2–11Mildly toxic to petsIndoor 45–50 cm tall (18–20 in)

Watering rhythm

Direct sun (at least 4-6 hours)

Weekly or as needed

Light

Direct sun (at least 4-6 hours)

Soil

Light, well-drained, poor to moderately fertile

Humidity

40–70%

Temp

5–22°C

Pet safety

Mildly toxic to pets

Mature size

45–50 cm tall (18–20 in)

Care at a glance

Light

Miss Jekyll love-in-a-mist needs sun on the leaves, not just bright ambient room light. Best in full sun (6+ hours daily). Will tolerate light partial shade but produces fewer flowers and taller, weaker stems. Full sun also improves seed-pod development. 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 miss jekyll love-in-a-mist weekly or as needed. 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. Water during dry spells but Nigella is moderately drought-tolerant once established. Overwatering or waterlogged soil causes stem rot. Allow the soil surface to dry between waterings.

Soil and pot

Miss Jekyll love-in-a-mist grows best in light, well-drained, poor to moderately fertile. Thrives in sandy or chalky, well-drained soils with a pH of 6.5–7.5. Rich, fertile soils produce excessive foliage at the expense of flowers. Does not require amendment beyond basic drainage improvement. 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

Miss Jekyll love-in-a-mist sits happiest at around 40–70% humidity and 5–22°C (41–72°F). Tolerates a wide range of outdoor humidity. Good air movement reduces risk of downy mildew, which can be an issue in humid, cool springs. If you keep the room above 5–22°C 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 miss jekyll love-in-a-mist sparingly. Minimal feeding required. A single application of general-purpose granular fertiliser worked into the seedbed at sowing is sufficient. Excess nitrogen produces lush foliage and poor flowering. 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 miss jekyll love-in-a-mist in the Growli community. Each is annotated with the most common cause so you know where to start.

  • Downy mildewYellow patches on upper leaf surfaces with grey-purple fuzz beneath occur in cool, wet springs. Improve air circulation, thin seedlings, and avoid overhead watering.
  • Poor germination after transplantingNigella has a taproot and resents root disturbance. Always direct-sow in final position; transplanted seedlings often bolt or fail. Sow where they are to grow.
  • Short flowering windowPlants flower for only 4–6 weeks before setting seed. Make successional sowings every 3–4 weeks from early spring to early summer to extend the display.

Propagation

Direct sow in autumn (mild climates) or from early spring to early summer for successional bloom. Scatter seeds on the soil surface, rake in lightly, and keep moist; germination in 10–14 days at 15–18°C (59–65°F). Thin to 15 cm (6 in) apart. Self-seeds freely year to year. 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

Miss Jekyll love-in-a-mist is mildly toxic to pets. Nigella damascena seeds contain alkaloids (including damascenine) and are regarded as toxic if consumed in significant quantities. Not individually listed by the ASPCA, but seeds should be kept away from pets and children. Ingestion may cause gastrointestinal distress. 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.

Miss Jekyll love-in-a-mist care — frequently asked questions

What is the common name for Nigella damascena 'Miss Jekyll'?

Nigella damascena 'Miss Jekyll' is most commonly called Miss Jekyll love-in-a-mist, but it is also known as Miss Jekyll love-in-a-mist, love-in-a-mist, devil-in-the-bush. The names refer to the same species, so care instructions for Miss Jekyll love-in-a-mist apply identically to anything sold as love-in-a-mist.

How much light does miss jekyll love-in-a-mist need?

Miss Jekyll love-in-a-mist grows best in direct sun (at least 4-6 hours). Best in full sun (6+ hours daily). Will tolerate light partial shade but produces fewer flowers and taller, weaker stems. Full sun also improves seed-pod development.

How often should I water miss jekyll love-in-a-mist?

Water miss jekyll love-in-a-mist weekly or as needed. Water during dry spells but Nigella is moderately drought-tolerant once established. Overwatering or waterlogged soil causes stem rot. Allow the soil surface to dry between waterings. The finger-test (or lifting the pot to feel its weight) beats a fixed weekly calendar because pot size, light, and season all change how fast the soil dries.

Is miss jekyll love-in-a-mist toxic to cats and dogs?

Miss Jekyll love-in-a-mist is mildly toxic to pets. Nigella damascena seeds contain alkaloids (including damascenine) and are regarded as toxic if consumed in significant quantities. Not individually listed by the ASPCA, but seeds should be kept away from pets and children. Ingestion may cause gastrointestinal distress.

What USDA hardiness zone does miss jekyll love-in-a-mist grow in?

Miss Jekyll love-in-a-mist is rated for USDA zone 2–11 (cool-season annual) and RHS hardiness H5. Outside that range, grow it as a container plant that overwinters indoors before the first hard frost.

Miss Jekyll love-in-a-mist deep-dive guides

Every aspect of miss jekyll love-in-a-mist care, each with its own calibrated guide:

Featured in these plant shortlists

Miss Jekyll love-in-a-mist qualifies for 4 curated Growli shortlists — each one filtered objectively from our structured plant-care library, so the selection is consistent and checkable:

Related guides

Miss Jekyll love-in-a-mist is also known as Miss Jekyll love-in-a-mist, love-in-a-mist, and devil-in-the-bush.