Kalanchoe Care Guide
Kalanchoe blossfeldiana
Quick Answer
The most common mistake with Kalanchoe is overwatering — it stores water and handles drought far better than soggy soil. Let the soil dry out completely between waterings and when in doubt, wait another few days. Plant it in fast-draining mix (a cactus or succulent blend) and a pot with good drainage to give yourself a margin for error.
⭐Difficulty
Easy
☀️Light
Bright indirect to some direct sun
💧Watering
Every 10–14 days
🌫️Humidity
Low–Medium (30–50%)
🌡️Temperature
50–85°F
📈Growth Rate
Moderate
Toxicity
Source: ASPCA Animal Poison Control
Watering
Summer
Every 10–14 days
Winter
Every 14–21 days
Method: Allow soil to dry completely between waterings; water thoroughly; drain; treats like a succulent; avoid wetting the leaves or flowers
In summer, aim to water kalanchoe approximately every 10–14 days; in winter cut back to around every 14–21 days. Rather than following a calendar, let the soil dry out completely — all the way to the bottom of the pot. Water thoroughly until water drains from the bottom, then don't water again until the soil passes the dryness check. Soft or mushy leaves signal overwatering; slight wrinkling or shrivelling means it's time to water.
Light Requirements
Bright indirect to some direct sun
Kalanchoe does best in 2–3 feet from a south- or east-facing window, screened from direct midday sun. A sheer curtain is fine for filtering harsh afternoon sun. Kalanchoe adapts to lower light but grows more slowly and the leaves may become smaller.
Soil & Potting
Soil: Cactus/succulent mix or well-draining potting mix with perlite
Pot: Any pot with drainage; often sold in decorative pots — ensure drainage
Temperature & Humidity
Temperature: 50–85°F (10–29°C)
Humidity: Low–Medium (30–50%)
Fertilizing
Frequency: Monthly in spring/summer at half strength; skip when blooming and in fall/winter
Type: Balanced or bloom fertilizer at half strength
Common Problems
Mushy stem
Mushy stem: Overwatering. Reduce drastically; check drainage. Check the roots: if they're dark, mushy, or smell off, root rot has set in. Unpot the plant, trim all affected roots with clean scissors, dust with cinnamon, and repot in fresh dry mix before resuming a cautious watering schedule.
Won't rebloom
Won't rebloom: Needs 6-week short-day darkness treatment. Follow the protocol. Catching the problem early makes it much easier to fix — watch for early warning signs and act before the plant is in serious distress.
Mealybugs
Mealybugs: Check leaf nodes and stem joints. Treat with neem oil. Check under leaves and along stems regularly, since pests establish colonies before becoming visible from above. Treat with insecticidal soap or neem oil, covering the undersides of leaves, and repeat every 5–7 days for at least three rounds.
Powdery mildew
Powdery mildew: Poor airflow + humidity. Improve ventilation. Catching the problem early makes it much easier to fix — watch for early warning signs and act before the plant is in serious distress.
Propagation
The easiest way to propagate Kalanchoe is by stem cuttings. Take a 4–6 inch cutting that includes at least one node (the point where a leaf attaches). Remove any leaves that would be submerged, then place it in water or directly into moist potting mix. In water, roots appear within 2–4 weeks; pot up once they reach an inch long. The thing that trips people up most: taking a cutting without a node. Without a node, the cutting stays green for weeks but will never root.
Seasonal Care Calendar
🌸 Spring
Spring is when Kalanchoe starts actively pushing new growth as day length and light intensity increase. Increase watering frequency as the plant becomes more active, begin fertilising every 2–4 weeks with a balanced liquid fertiliser, and this is the ideal window for repotting or taking cuttings.
☀️ Summer
Summer is peak growing season — Kalanchoe is working hard and using water and nutrients faster than at other times of year. Water more frequently but check the soil rather than going on a fixed schedule, since heat and higher light accelerate drying. If you move it outdoors, introduce it to conditions gradually to prevent sun scorch.
🍂 Fall
As temperatures drop and light levels decrease in fall, begin tapering off watering. Kalanchoe will naturally slow its growth rate — this is normal. Stop fertilising by late October and avoid any unnecessary repotting before winter. Watch for flower buds developing around winter–spring (when purchased); reblooms in 2–6 months with darkness treatment — avoid repotting or relocating the plant at this time.
❄️ Winter
Winter is near-dormancy for Kalanchoe. Water only when the soil has been completely dry for at least a week, which may mean once a month or less. Hold off on fertilising entirely until spring. Don't panic if growth stops completely — this rest is essential for the plant's long-term health.