Light
Bright, indirect
Ideal spot
Kalanchoe marmorata · Flowering plant
Bright, indirect
Ideal spot
every 1–2 weeks
In the growing season
Easy
Slow grower
Toxic
Cats & dogs
Penwiper Plant (Kalanchoe marmorata) belongs to the Crassulaceae family and is a easy houseplant to look after. This slow grower plant is happiest in bright, indirect and reaches 15–45 cm indoors.
For watering, the rule is simple: drought-tolerant. In the growing season it needs water roughly every 14 days, dropping to every 28 days in winter. Use the watering calculator below to tune that rhythm to your pot size, light and household humidity.
Important: Penwiper Plant is toxic to pets — keep it out of reach of cats, dogs and children.
Set your pot size, light and humidity — the calculator tunes the watering rhythm to your home.
Light at the spot
Humidity
Season
Water Penwiper Plant
every 14 days
≈ every 1–2 weeks · 2.1× per month
Let the top 2–3 cm dry and finger-check before watering again.
Penwiper Plant prefers bright, indirect but will cope with medium to bright. Harsh midday sun can scorch sensitive leaves, while too little light leads to leggy, sparse growth.
Keep Penwiper Plant between 15–28 °C and aim for around 35% humidity (20% minimum). Below 5 °C it risks cold damage — keep it away from draughty windows and radiators.
15–28 °C
Not below 5 °C
35%
20% minimum
Drought-tolerant
Soil between waterings
Pot Penwiper Plant in fast-draining cactus/succulent mix with extra grit. A drainage hole is essential — soggy, airless soil is the single most common way houseplants die.
Kalanchoes contain cardiac glycosides that can affect a pet's heart rhythm as well as cause vomiting — keep them away from cats and dogs.
The best ways to propagate Penwiper Plant are leaf cuttings, offsets / pups and stem cuttings. Late spring and summer are ideal, when the plant is growing most actively.
Florist kalanchoes rebloom when given 6 weeks of 14-hour nights — cover them each evening and you get a fresh flush of flowers.
In the growing season Penwiper Plant needs watering every 1–2 weeks (about every 14 days in a 16 cm pot at medium light), and much less in winter — roughly every 28 days. Use the watering calculator above to get the exact interval for your conditions.
Penwiper Plant thrives in bright, indirect. A spot near a bright window out of harsh midday sun is ideal; give it a little more light in winter.
Penwiper Plant is toxic to pets. Kalanchoes contain cardiac glycosides that can affect a pet's heart rhythm as well as cause vomiting — keep them away from cats and dogs.
The most common problem with Penwiper Plant is root rot from overwatering. Check your watering and drainage first — most issues trace back to too much or too little water.
The best ways to propagate Penwiper Plant are leaf cuttings, offsets / pups and stem cuttings. Late spring and summer are ideal, when the plant is growing most actively.
Indoors Penwiper Plant typically reaches 15–45 cm. With the right light and occasional repotting it stays compact and bushy.
Care data last verified on 15 June 2026.
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