Kalanchoe Care Guide

Kalanchoe asks for very little: bright light, fast-draining soil and a light hand with water. Here is how to cover the five pillars, plus how to get it to rebloom. This guide walks through Kalanchoe (Kalanchoe blossfeldiana) care using Grow Queen's 5 Pillars of Plant Care.

🌏 Know Your Plant

Florist kalanchoe (Kalanchoe blossfeldiana) is native to northeastern Madagascar, according to Kew's Plants of the World Online, where it grows as a succulent subshrub in a seasonally dry tropical climate. It belongs to the stonecrop family (Crassulaceae). Its thick, waxy leaves store water, so it handles dry spells far better than soggy soil. It also blooms in response to long nights, which is why it is sold in flower in late winter and spring. Other kalanchoes you may see, such as mother of millions and chandelier plant, are succulents in the same genus, and the ASPCA lists the whole genus as toxic to pets.

• Native to northeastern Madagascar; stonecrop family
• Succulent: thick leaves store water
• Blooms after several weeks of long nights
• Compact: usually 6 to 18 inches tall

✨ Fun Facts

• The species is named for Robert Blossfeld, a German nurseryman who brought it to Europe from Madagascar.
• Like poinsettias, kalanchoes set flower buds in response to short days and long nights.
• Double-flowered kinds can have as many as 26 petals per bloom.
• Each flower cluster is long lasting, often about four weeks.

What they need: A gritty, fast-draining succulent mix.

Kalanchoe can be damaged by overwatering, so it needs a mix that drains quickly and lets air reach the roots. A cactus and succulent mix in a pot with a drainage hole is ideal. Root rot usually comes from soil that drains slowly or from watering too often.

• After flowering, move the plant to a pot just one size larger.
• Terra cotta pots help the soil dry out between waterings.
• Never let the pot sit in a saucer of water.

Grow Queen pick: Craft Desert Mix. Craft Desert Mix is chunky, gritty and peat-free, made for cacti and succulents, so it gives kalanchoe the fast drainage its water-storing leaves need (currently pre-order, ships by Nov 9).

Learn more: Pillar 1, Soils & Growth Mediums →

What they need: Bright light, with protection from harsh afternoon sun.

Kalanchoe needs plenty of light to stay compact and to bloom, ideally 6 to 8 hours of bright light a day. A sunny east or west window is a good fit. Long, hot afternoon sun can scorch the leaves, so filter it with a sheer curtain if needed.

Signs of too little light:
• Tall, spindly stems
• Pale, stretched leaves
• Few or no flower buds

Signs of too much light:
• Scorched, bleached patches on leaves
• Leaves turn reddish
• Soil dries out unusually fast

Learn more: Pillar 2, Lighting →

What they need: Dry between waterings, then soak.

Let the soil dry out between waterings, then water deeply until it drains from the bottom. Pour off any extra water in the saucer. In winter and during cool, cloudy weather, the soil stays wet longer, so you will water less often.

Signs of overwatering:
• Soft, mushy stems near the soil
• Yellow, translucent or dropping leaves
• Soil that stays damp for days

Signs of underwatering:
• Wrinkled or shriveled leaves
• Leaves drop from the bottom of the stems
• Flowers fade early

Learn more: Pillar 3, Watering →

What they need: Mild days, cool nights and no frost.

NC State Extension suggests about 60°F at night and 70°F during the day. Clemson Extension notes that cool nights help flowers last longer. If your plant spends summer outdoors, bring it in before temperatures drop to 45°F.

Ideal conditions:
• Days around 60 to 70°F
• Nights a few degrees cooler
• Average household humidity is fine
• Good air circulation around the leaves

Avoid:
• Frost or temperatures below 45°F
• Night temperatures above 80°F when you are trying to trigger blooms
• Damp, still air that encourages powdery mildew

Learn more: Pillar 4, Environment →

What they need: Monthly feeding while the plant is actively growing.

Clemson Extension recommends feeding actively growing kalanchoes once a month. Hold off while the plant is resting or in the long-night period before blooming. Overfeeding leads to soft, leggy growth instead of flowers.

Benefits of the right feeding:
• Supports sturdy new stems after flowering
• Helps the plant build up energy to rebloom
• Keeps leaves thick and deep green

Grow Queen pick: Organic Succulent & Cactus Plant Food. Organic Succulent & Cactus Plant Food is a dry formula made for succulents like kalanchoe and is applied to the soil during the growing season.

Learn more: Pillar 5, Plant Nutrients →

🍂 Common Problems

Why won't my kalanchoe bloom again?

It needs long, uninterrupted nights. Give it about 14 hours of total darkness each night for at least six weeks in fall and winter, with bright light during the day. Keep nights below 80°F, since heat can delay buds.

Why are the stems soft and the leaves dropping?

This usually points to root or stem rot from too much water or slow-draining soil. Let the soil dry, empty the saucer and repot into a gritty mix if the soil stays wet.

Why is my kalanchoe tall and floppy?

Low light makes it stretch. Move it to a brighter window and cut back tall stems after flowering to keep it compact.

What is the dusty coating or speckling on the leaves?

It may be powdery mildew, which on kalanchoe can look like fine webbing, yellow spots or ring patterns. Give the plant more air flow and remove badly affected leaves. Your local extension office can help confirm it.

✂️ Maintenance & Growth Tips

• Deadhead spent flower clusters to encourage more blooms.
• After flowering, cut back tall growth and old flower stems.
• Root 2 to 3 inch stem cuttings in spring or early summer. Let them callus for a few days first.
• Move to a slightly larger pot after blooming.
• Check for mealybugs, aphids and scale. Wipe or pick them off and isolate the plant.

⚠️ Pet Safety

The ASPCA lists kalanchoe (Kalanchoe species) as toxic to dogs and cats. It contains bufadienolides, and eating it can cause vomiting and diarrhea and, rarely, abnormal heart rhythm. Keep it well out of reach of pets and children, and call your vet or the ASPCA Animal Poison Control Center if you suspect a pet ate some.

🌿 Bottom Line

Kalanchoe is an easy, long-blooming succulent. Bright light, gritty soil and letting it dry between waterings cover most of its needs.

To get flowers again, give it about six weeks of long, dark nights in fall and winter. Keep it away from pets, since the ASPCA lists it as toxic.