Growli

Plant care

Paddle Plant (Flapjacks) (Paddle plant) care

Kalanchoe luciae

Also called Paddle plant, Flapjacks, Flapjack plant, Paddle-leaf kalanchoe, Desert cabbage, Dog tongue.

USDA USDA zones 10a-11bToxic to petsIndoor Typically 30-60 cm (12-24 in) tall and around 45 cm (18 in) wide

Watering rhythm

2-3weeks

Every 2-3 weeks in spring/summer; roughly monthly or less in winter

Light

Direct sun (at least 4-6 hours)

Soil

Gritty, fast-draining cactus/succulent mix

Humidity

Low (around 30-50%)

Temp

18-24 C

Pet safety

Toxic to pets

Mature size

Typically 30-60 cm (12-24 in) tall and around 45 cm (18 in) wide

Care at a glance

Light

Paddle Plant (Flapjacks) needs sun on the leaves, not just bright ambient room light. Wants at least 4-6 hours of direct sun. Indoors, place at a bright south- or west-facing window; outdoors give full sun with light afternoon shade in the hottest climates. Strong light deepens the red leaf margins and keeps the rosette tight; too little light causes pale, stretched, leaning growth. 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 paddle plant (flapjacks) every 2-3 weeks in spring/summer; roughly monthly or less in winter. Succulent-style plants store water in stem and leaf tissue — they'd rather be slightly thirsty than slightly soggy, and the most common way to kill one is to water it on a fixed weekly calendar instead of by feel. Water deeply only once the top 3-5 cm of soil is fully dry, then let it drain freely. This succulent stores water in its leaves and rots easily in soggy soil, so always err on the dry side. Cut watering right back during winter dormancy when growth slows.

Soil and pot

Paddle Plant (Flapjacks) grows best in gritty, fast-draining cactus/succulent mix. Use a sandy, sharply draining cactus and succulent blend, ideally amended with extra perlite, pumice, or coarse grit. A pot with drainage holes is essential; never let it sit in standing water. 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

Paddle Plant (Flapjacks) sits happiest at around Low (around 30-50%) humidity and 18-24 C (65-75 F). Prefers dry air and average household humidity. High humidity and poor airflow encourage rot and fungal problems, so avoid bathrooms, terrariums, or misting. Good ventilation keeps it healthy. If you keep the room above 18 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 paddle plant (flapjacks) sparingly. Feed lightly with a balanced or low-nitrogen liquid fertiliser diluted to half strength, only once or twice during the spring and summer growing season. Do not fertilise in autumn or winter. Over-feeding produces weak, leggy growth and dulls the leaf colour. 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 paddle plant (flapjacks) in the Growli community. Each is annotated with the most common cause so you know where to start.

  • Etiolation (stretching and leaning)Too little light makes the rosette open up, lean toward the window, and lose its red blush. Move it to the brightest spot you have and rotate the pot regularly; behead and re-root a badly stretched rosette to restart compact growth.
  • Root and crown rotThe most common killer, caused by overwatering or poorly draining soil. Soft, translucent, yellowing leaves signal too much moisture. Let the soil dry fully between waterings, use a gritty mix, and never leave the pot in a saucer of water.
  • Mealybugs and aphidsWhite cottony mealybugs hide in leaf joints and the crown; aphids cluster on flower stalks. Dab mealybugs with a cotton swab dipped in 70% isopropyl alcohol and treat repeat infestations with insecticidal soap or neem.
  • Whitish leaf coating disturbedThe pale, powdery farina (natural wax bloom) on the leaves is protective and does not grow back once rubbed off. Handle the plant by the base and avoid wiping or misting the foliage so it keeps its frosted, colourful look.
  • Rosette dies after floweringThis is normal, not a disease. Kalanchoe luciae is monocarpic, so the parent rosette declines once it blooms. Let the offsets at the base mature, then separate and pot them up to keep the plant going.
  • Sunburn from sudden exposureMoving a plant straight from low light into intense summer sun can scorch leaves, leaving bleached or brown patches. Acclimatise it gradually over one to two weeks and provide light shade during peak afternoon heat in hot climates.

Propagation

Easiest from offsets (pups): gently separate a rooted pup from the base of the parent and pot it into dry succulent mix. It also grows from leaf or stem cuttings: take a healthy leaf or behead a stretched rosette, let the cut end callus for a few days in a warm, dry, shaded spot, then place on or in gritty mix and water only lightly until roots form. Spring and summer give the fastest results. 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

Paddle Plant (Flapjacks) is toxic to pets. The ASPCA lists Kalanchoe (Kalanchoe spp.) as toxic to both cats and dogs. All parts contain bufadienolide cardiac glycosides; ingestion typically causes vomiting and diarrhoea, and in rare cases abnormal heart rhythm. Keep well out of reach of pets and contact a vet or the ASPCA Poison Control line 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.

Paddle Plant (Flapjacks) care — frequently asked questions

What is the common name for Kalanchoe luciae?

Kalanchoe luciae is most commonly called Paddle Plant (Flapjacks), but it is also known as Paddle plant, Flapjacks, Flapjack plant, Paddle-leaf kalanchoe, Desert cabbage, Dog tongue. The names refer to the same species, so care instructions for Paddle Plant (Flapjacks) apply identically to anything sold as Paddle plant.

How much light does paddle plant (flapjacks) need?

Paddle Plant (Flapjacks) grows best in direct sun (at least 4-6 hours). Wants at least 4-6 hours of direct sun. Indoors, place at a bright south- or west-facing window; outdoors give full sun with light afternoon shade in the hottest climates. Strong light deepens the red leaf margins and keeps the rosette tight; too little light causes pale, stretched, leaning growth.

How often should I water paddle plant (flapjacks)?

Water paddle plant (flapjacks) every 2-3 weeks in spring/summer; roughly monthly or less in winter. Water deeply only once the top 3-5 cm of soil is fully dry, then let it drain freely. This succulent stores water in its leaves and rots easily in soggy soil, so always err on the dry side. Cut watering right back during winter dormancy when growth slows. 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 paddle plant (flapjacks) toxic to cats and dogs?

Paddle Plant (Flapjacks) is toxic to pets. The ASPCA lists Kalanchoe (Kalanchoe spp.) as toxic to both cats and dogs. All parts contain bufadienolide cardiac glycosides; ingestion typically causes vomiting and diarrhoea, and in rare cases abnormal heart rhythm. Keep well out of reach of pets and contact a vet or the ASPCA Poison Control line if ingestion is suspected.

What USDA hardiness zone does paddle plant (flapjacks) grow in?

Paddle Plant (Flapjacks) is rated for USDA zone USDA zones 10a-11b (hardy to roughly -1 C / 30 F; protect from frost). Outside that range, grow it as a container plant that overwinters indoors before the first hard frost.

Paddle Plant (Flapjacks) deep-dive guides

Every aspect of paddle plant (flapjacks) care, each with its own calibrated guide:

Related guides

Paddle Plant (Flapjacks) is also known as Paddle plant, Flapjacks, Flapjack plant, Paddle-leaf kalanchoe, Desert cabbage, and Dog tongue.