Kalanchoe (Kalanchoe humilis)

Also known as: Widow's-thrill, Devil's backbone, Mother-in-law plant

Kalanchoe humilis is a succulent plant native to East Africa, known for its distinctive patterned leaves and compact form.

In This Article

Care Tips Water Sunlight Temperature Soil Fertilize Prune Propagation Repotting Toxicity

Attributes of Kalanchoe

Lifespan

Kalanchoe humilis is a perennial plant.

Plant Height

15-45 cm

Leaf Color

Green, sometimes with red or purple tinged edges

Flower Size

0.8-1.3 cm

Flower Color

Red, purple, pink, orange, or yellow

Quickly Identify Kalanchoe

Recognizable by its lance-shaped, green to purple leaves with unique maroon patterning and small tubular flowers.

Scientific Classification of Kalanchoe

Phylum

Tracheophyta

Class

Magnoliopsida

Order

Saxifragales

Family

Crassulaceae

Genus

Kalanchoe

Planting and Growing of Kalanchoe

Care Difficulty

Easy

Watering Schedule

Every 2 days

Sunlight Requirements

Full sun

Sunshine Duration

6-12 hours

Ideal Temperature

65-75℉

Soil Type

Potting Mix, Peat Mix

Soil pH

6.5-7.5

Fertilizer Type

Balanced

Pruning Season

Spring, Summer

Pruning Area

Branches, Leaves

Pruning Frequency

Once a year

Repotting Season

Spring

Pot Type

Plastic, Ceramic

How to Water Kalanchoe?

For Kalanchoe humilis, the watering should be thoroughly done until you see water draining out from the bottom, signaling that the root system is fully hydrated. Always empty the drainage tray to avoid root rot.

What are the symptoms of an underwatered Kalanchoe? ›

What should I do if my Kalanchoe is not getting enough water? ›

What are the symptoms of an overwatered Kalanchoe? ›

How to save an overwatered Kalanchoe? ›

What Are the Sunlight Requirements for Kalanchoe?

Sunlight Requirements: Full sun, Partial sun

Duration of light: 4 to 6 hours

Kalanchoe humilis thrives in partial to full sunlight. An ideal light range accelerates growth, encourages flowering, and maintains the leaf coloration and health of the plant.

How much light does Kalanchoe humilis need? ›

Solutions to achieve ideal lighting for Kalanchoe humilis? ›

Benefits of ideal lighting for Kalanchoe humilis? ›

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What Is the Ideal Temperature Range for Kalanchoe?

Ideal Temperature: 65 ~ 75℉

Kalanchoe humilis thrives best in temperatures ranging from 65°F to 75°F. These conditions mimic their native sub-tropical environments, providing optimal conditions for both growth and flowering. Temperature stability is key, as fluctuations can cause stress in the plant leading to stunted growth or leaf loss.

What Soil is Best for Kalanchoe?

Soil type: Sandy loam, Loam

Soil PH: 6.5 ~ 7.5

Kalanchoe humilis thrives in well-drained soil to avoid waterlogging, which can lead to root rot. This requirement is crucial for the plant's health and allows its roots to access the necessary oxygen and nutrients. Soil enriched with organic matter provides essential nutrients and enhances the soil structure. This helps Kalanchoe humilis grow more vigorously and supports vibrant foliage and flowering. Kalanchoe humilis prefers soil with moderate fertility levels. Overly fertile soil can lead to excessive leaf growth at the expense of blooming, so balance is key for optimal development and decorative appearance.

How to Fertilize Kalanchoe?

Fertilizer type: Balanced

For Kalanchoe humilis, use a balanced 20-20-20 NPK liquid fertilizer, diluted to half the recommended strength. During the growth period, apply approximately 150-200 ml per plant to avoid over-fertilization while still promoting healthy growth.

How to Prune Kalanchoe?

Pruning Time: Spring, Summer

Begin by identifying any dead, wilted, or discolored leaves. These can usually be found towards the base of the plant or at the tips. Gently remove these with your fingers or use pruning shears for cleaner cuts. Trim the leaves and stems to encourage a desirable shape. Focus on retaining the plant's natural growth pattern, making sure the cuts are made at leaf nodes to encourage new growth from the remaining stem. For indoor Kalanchoe humilis, prune back excessively long stems to keep the plant compact and manageable. This not only makes it more visually appealing but also ensures the plant remains healthy by promoting airflow.

How to Propagate Kalanchoe plant?

Propagate Time: Spring,Early summer

Choose a healthy stem from the mother plant, free from blemishes or diseases. It should be at least a few inches long with several leaves. This ensures that the cutting has enough stored energy to grow roots.

Use sharp pruning shears to take a cutting just below a leaf node. Remove the leaves from the lower part of the cutting to expose the tissue, which will optimally form roots once planted.

Allow the cutting to dry for a day or two to form a callus over the cut surface. Once callused, insert the cutting into the sterile potting mix and water sparingly, as overwatering can lead to rot.

How to Repot Kalanchoe plant?

Repotting frequency: Once every 2 years

Recognize the signs for repotting your Kalanchoe humilis by observing its roots. If roots are pushing through the drainage holes or the plant looks top-heavy, it's time to repot. The best time is during its growth periods in spring and summer.

Choose a pot that is slightly larger than the current one, ideally with drainage holes to prevent waterlogging. A terracotta pot is a good choice because it allows moisture to evaporate, reducing the risk of root rot in your succulent.

Opt for a well-draining soil mix, such as cactus or succulent potting mix. These soils are formulated to let water pass through quickly, ensuring the roots don't sit in excess moisture, which can lead to root rot.

Toxicity of Kalanchoe

Is Kalanchoe toxic to humans?

Kalanchoe exhibits a moderate level of toxicity to humans, primarily through ingestion. Every part of the plant, especially the flowers, contains toxic compounds that could pose health risks if eaten. The toxic characteristics of the plant are primarily due to the presence of bufadienolide cardiac glycosides. Consuming these elements can result in a variety of symptoms, including gastrointestinal disturbances like severe vomiting and diarrhea, along with more severe effects such as cardiac irregularities. It is essential for people to prevent accidental ingestion of any part of kalanchoe, as the resulting symptoms can significantly affect human health.

Is Kalanchoe toxic to cat?

Kalanchoe presents a moderate toxicity hazard to cats, with the possibility of accidental ingestion by felines. Every component of the plant, especially the flowers, harbors toxic substances that can be detrimental if ingested. The harmful compounds, identified as bufadienolide cardiac glycosides, may result in a range of symptoms that signify physical distress or malaise in cats. It is crucial to observe a cat for any unusual behaviors or signs of illness, and to promptly seek veterinary assistance if kalanchoe poisoning is suspected.

Is Kalanchoe toxic to dog?

Kalanchoe presents a moderate level of toxicity risk to dogs. Canines might inadvertently consume various parts of the plant, resulting in poisoning. The entire plant contains toxic elements, with the flowers being especially dangerous. If a dog ingests any portion of kalanchoe, it may show symptoms like vomiting, diarrhea, excessive drooling, and alterations in heart rate. The toxic effects are primarily due to bufadienolide cardiac glycosides found in the plant. Should ingestion be suspected, it is crucial for dog owners to obtain prompt veterinary assistance to secure the best possible outcome for their beloved pet.

WARNING

The judgment on toxicity and danger is for reference only. We DO NOT GUARANTEE any accuracy of such judgment. Therefore, you SHALL NOT rely on such judgment. It is IMPORTANT TO SEEK PROFESSIONAL ADVICE in advance when necessary.

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