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Plant care

Lemon-Scented Ginger (Chiang Mai Princess ginger) care

Zingiber citriodorum

Also called lemon-scented ginger, Chiang Mai Princess ginger, lemon ginger.

RHS H2USDA 9a–11Mildly toxic to petsIndoor Leafy stems grow to approximately 1 m tall

Watering rhythm

Bright indirect light (just back from a sunny window)

Evenly moist during the growing season; almost dry during winter dormancy.

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Light

Bright indirect light (just back from a sunny window)

Soil

Rich, moisture-retentive, free-draining loam

Humidity

60–85%

Temp

15–35 °C (growing season); rhizome should not drop below 5 °C

Pet safety

Mildly toxic to pets

Mature size

Leafy stems grow to approximately 1 m tall

Care at a glance

Light

Bright but filtered. Lemon-Scented Ginger burns within days in unfiltered south-facing summer sun, and stops growing within months in deep shade. Best in part shade or filtered light; direct afternoon sun will scorch the large leaves — position to receive bright indirect light or gentle morning sun only. If you only have a south window, set the plant back 1.5 m or hang a sheer curtain — both knock the intensity down into the right range.

Watering

Watering lemon-scented ginger: evenly moist during the growing season; almost dry during winter dormancy.. The number that matters isn't the day of the week — it's how dry the top 2-3 cm of the pot feels. A finger in the soil tells you more than a watering app. After every watering, tip the saucer. Water consistently through spring and summer so soil never fully dries out; reduce to infrequent watering once leaves yellow and die back in autumn, resuming in spring.

Soil and pot

Lemon-Scented Ginger grows best in rich, moisture-retentive, free-draining loam. Incorporate generous amounts of compost or coir to retain moisture while still allowing excess water to drain freely away from the rhizome. 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

Lemon-Scented Ginger sits happiest at around 60–85% humidity and 15–35 °C (growing season); rhizome should not drop below 5 °C (59–95 °F (growing season); rhizome minimum 41 °F). Prefers high humidity consistent with its Thai rainforest origin; when grown indoors or in a greenhouse, mist regularly or use a pebble tray with water to maintain ambient moisture around the foliage. If you keep the room above 15–35 °C (growing season); rhizome should not drop below 5 °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 lemon-scented ginger sparingly. Feed monthly during the growing season with a balanced liquid fertiliser; a potassium-rich feed from midsummer encourages the ornamental inflorescences to develop. 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 lemon-scented ginger in the Growli community. Each is annotated with the most common cause so you know where to start.

  • Mealybugs — White, cottony clusters appear on stems and the undersides of leaves, causing wilting and sticky honeydew; remove with an alcohol-soaked cotton swab and treat with insecticidal soap.
  • Rhizome rot in cold wet winters — Rhizomes decay rapidly if left in cold, wet soil over winter; lift and store dry in frost-free conditions in zones below 9, or ensure perfect drainage in the ground.

Propagation

Divide rhizomes in spring when new growth begins, ensuring each section has at least one bud; pot up individually in moist compost and keep warm (above 20 °C / 68 °F) until established. 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

Lemon-Scented Ginger is mildly toxic to pets. Zingiber citriodorum is not individually assessed by the ASPCA. Culinary ginger (Z. officinale) is generally considered non-toxic, but the genus lacks blanket ASPCA clearance at species level. Classified here as mildly-toxic; ingestion may cause mild gastrointestinal upset in cats and dogs. Seek veterinary advice if ingestion is suspected. 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.

Lemon-Scented Ginger care — frequently asked questions

What is the common name for Zingiber citriodorum?

Zingiber citriodorum is most commonly called Lemon-Scented Ginger, but it is also known as lemon-scented ginger, Chiang Mai Princess ginger, lemon ginger. The names refer to the same species, so care instructions for Lemon-Scented Ginger apply identically to anything sold as Chiang Mai Princess ginger.

How much light does lemon-scented ginger need?

Lemon-Scented Ginger grows best in bright indirect light (just back from a sunny window). Best in part shade or filtered light; direct afternoon sun will scorch the large leaves — position to receive bright indirect light or gentle morning sun only.

How often should I water lemon-scented ginger?

Water lemon-scented ginger evenly moist during the growing season; almost dry during winter dormancy.. Water consistently through spring and summer so soil never fully dries out; reduce to infrequent watering once leaves yellow and die back in autumn, resuming in spring. 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 lemon-scented ginger toxic to cats and dogs?

Lemon-Scented Ginger is mildly toxic to pets. Zingiber citriodorum is not individually assessed by the ASPCA. Culinary ginger (Z. officinale) is generally considered non-toxic, but the genus lacks blanket ASPCA clearance at species level. Classified here as mildly-toxic; ingestion may cause mild gastrointestinal upset in cats and dogs. Seek veterinary advice if ingestion is suspected.

What USDA hardiness zone does lemon-scented ginger grow in?

Lemon-Scented Ginger is rated for USDA zone 9a–11 and RHS hardiness H2. Outside that range, grow it as a container plant that overwinters indoors before the first hard frost.

Lemon-Scented Ginger deep-dive guides

Every aspect of lemon-scented ginger care, each with its own calibrated guide:

Featured in these plant shortlists

Lemon-Scented Ginger 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

Lemon-Scented Ginger is also known as lemon-scented ginger, Chiang Mai Princess ginger, and lemon ginger.