I am a succulent, upright-growing perennial or biennial with a single, thick, unbranched stem.

My most distinctive feature is the numerous, tiny, complete plantlets (propagules) that form along the scalloped edges of my long, lance-shaped, blue-green leaves. These plantlets develop roots while still attached.

I am a viviparous plant, meaning I give "live birth" – the plantlets drop off and root readily wherever they land, leading to my other common name, "Mother of Millions."

I produce clusters of small, tubular, grayish-pink to coral-colored flowers on tall stalks at the end of my life cycle (monocarpic).

I am native to the Fiherenana River valley and plateaux in southwestern Madagascar. I have become naturalized in many tropical and subtropical regions, often invasively.

I am drought-tolerant but appreciate more regular water than some succulents during active growth.

Use the "soak and dry" method: water deeply when the soil is completely dry, then allow it to dry out thoroughly again.

I am susceptible to overwatering and root rot. Ensure perfect drainage. Reduce watering significantly in winter when growth slows.

The fleshy leaves store water, so when in doubt, it's safer to under-water.

I require plenty of bright, direct light to maintain compact growth and vibrant leaf color.

A south or west-facing window is ideal. With insufficient light, I become leggy, pale, and weak, and the stem may topple over.

I can tolerate full sun outdoors but may need acclimation to prevent sunburn.

I thrive in warm temperatures and am best suited to USDA zones 9b-11 outdoors.

My ideal range is 18°C to 27°C. I am not frost-tolerant.

Keep me above 10°C at all times. Cold, wet soil is fatal.

I am best suited as a potted plant due to my prolific, often invasive, spreading habit via plantlets.

Use a very well-draining cactus/succulent potting mix, amended with extra perlite or pumice.

Choose a pot with excellent drainage holes. I am a good candidate for containers where my "babies" can be easily managed.

Warning: Plant me with caution outdoors in frost-free climates, as I can escape cultivation and crowd out native plants.

I am a light to moderate feeder during the growing season (spring and summer).

Fertilize monthly with a balanced, diluted liquid fertilizer or a formula for cacti/succulents.

Do not fertilize in fall and winter.

Scientific Name: Kalanchoe daigremontiana (syn. Bryophyllum daigremontianum)

Common Names: Devil's Backbone, Alligator Plant, Mexican Hat Plant

Plant Family: Crassulaceae

Plant Type: Monocarpic perennial succulent

I contain cardiac glycosides (bufadienolides) which are toxic to cats, dogs, livestock, and humans. Ingestion can cause vomiting, diarrhea, abnormal heart rhythm, and, in severe cases, seizures or death. The plantlets are especially tempting to curious pets. Keep me completely out of reach.

Like most succulents, my small size limits any significant air purification impact. My primary role is ornamental, albeit with a cautionary note.