Plants/Succulents/Burro's tail

Burro's tail

Sedum morganianum Walther · Crassulaceaealso known as Donkey's tail, Donkey tail

The most common mistake with burro's tail (Sedum morganianum) is watering it like an ordinary foliage plant. Its fleshy leaves already store water, and its fragile trailing stems suffer more from wet potting mix than from a brief dry spell.

↔ swipe · 3 photos

Stem and leaf structure

Indoors, the plant develops trailing stems that become woody at the base with age. This growth habit makes it well suited to hanging planters or a high shelf, where the stems do not press against a surface.

The leaves are fleshy, blue-green, and up to 2 cm long. They grow closely along the stems and store water, but fall off easily when touched, so avoid moving the plant unnecessarily.

Origin and natural adaptations

The species is native to southern Mexico. For care, what matters is not descriptive names such as the Ukrainian name meaning “donkey's tail,” but the fact that it is a succulent that stores moisture in its leaf tissues.

ConditionWhat it means indoors
Drier conditionsWater after the potting mix dries out
A bright spotStems stay more compact
Fragile leavesRepot and move the plant carefully

The specific epithet refers to Meredith Walter Morgan, an American succulent enthusiast. In English, the plant is often called “donkey tail” because of its long, trailing strands of stems.

Light and placement

Bright indirect light is best. At a south- or west-facing window, position the plant so that direct sunlight does not overheat the leaves and potting mix in hot weather.

  • elongated stems
  • widely spaced leaves
  • slower stem growth

These signs are more often linked to insufficient light than to a lack of fertilizer. Feeding cannot replace light and may only worsen the plant's condition in a dim spot.

Watering and potting mix

Water after the potting mix dries out. Constantly wet mix is more dangerous than a brief spell without water: succulent roots quickly develop rot when moisture stagnates.

  • a light succulent potting mix
  • added sand or perlite
  • a pot with drainage holes

The plant tolerates dry indoor air well and does not need extra humidity. Misting does not replace watering and can leave moisture between the closely packed leaves.

Repotting and propagation

Repot carefully, as the leaves and young sections of stem break off easily. Mature plants are usually moved into a new pot with the root ball intact to minimize damage to roots and stems.

  • stem cuttings
  • individual leaves
  • division during repotting

Let cut or detached pieces dry before planting, then place them in a light, well-drained potting mix. Propagation from seed is possible, but this method is used less often indoors.

Flowering and problems

Small red flowers appear in spring, mainly on well-developed stems. Indoors, flowering should not be seen as an essential stage: the plant is usually grown for the shape of its stems and foliage.

  • soft, yellow leaves — excess moisture
  • loss of firmness — heat or prolonged dryness
  • leaf drop — a sudden change in conditions or physical contact

If you suspect rot, remove the plant from the wet potting mix and inspect the roots. If some stems are still healthy, they can be used for cuttings.

Characteristics
Light
bright indirect light
Temperature
warm conditions
Watering
after the potting mix dries out
Soil
well-drained succulent mix
Difficulty
easy
Cats and dogs
safe
Size indoors
stems 30-120 cm
Leaves indoors
up to 2 cm
Native range
southern Mexico

Care

This succulent stores water in its leaves, so the main risk indoors is overwatering, not dry air. Care comes down to a bright spot, well-drained potting mix, and gentle handling of its fragile stems.

Light
Provide bright indirect light. A bright spot near a south- or west-facing window is suitable. In hot weather, filter direct sunlight.
Temperature
Keep warm. It cannot tolerate frost. In winter, avoid freezing temperatures, cold drafts, and wet potting mix.
Watering
Water when the potting mix is dry. Water when the potting mix has dried out. Constant moisture around the roots increases the risk of rot.
Soil
Use a succulent potting mix. It needs a light, well-drained mix with sand or perlite and a pot with drainage holes.
Feeding
Feed in spring and summer. Feed sparingly with a succulent fertilizer. Do not fertilize in winter.
Support
Use a hanging planter. Position the trailing stems where they will not be brushed against during care or when someone walks past.
Leaves
Do not mist. The leaves are fragile and fall off easily. Avoid washing dust off with a stream of water, and do not move the plant unnecessarily.
Repotting
Repot without disturbing the root ball. Repot carefully when the plant outgrows its pot. The fresh potting mix should remain light and well-drained.

Botany

4 ill.
Taxonomy
Family
Crassulaceae
Genus
Sedum
Species
Sedum morganianum
Author and year
Walther
Botanical illustration
Botanical illustration · unknown author, Public domain
Botanical illustration, 1799
Botanical illustration, 1799 · Pierre-Joseph Redouté, Public domain
Botanical illustration, 1911
Botanical illustration, 1911 · Curtis, Public domain
Botanical illustration, 1904
Botanical illustration, 1904 · Hermann Friese, Public domain
↔ swipe · 4 illustrations

Burro's tail belongs to the family Crassulaceae and the genus Sedum. It is a succulent with long, trailing stems that become woody at the base and closely packed, fleshy, blue-green leaves.

The leaves, up to 2 cm long, store moisture. This is why the plant tolerates dry spells better than potting mix that stays wet for a long time.

The species is native to southern Mexico. Its specific epithet honors Meredith Walter Morgan, while the English name “donkey tail” describes the appearance of its trailing stems.

How it differs from similar plants

Flaming Katy Kalanchoe blossfeldiana
Kalanchoe is recognizable by its flat-topped flower clusters and 5–7 cm leaves, while burro's tail has fragile trailing stems with leaves up to 2 cm long.
Jade plant Crassula ovata
Crassula grows to 1–1.5 m indoors, while burro's tail develops trailing stems 30–120 cm long.
Mexican snowball Echeveria elegans
Echeveria forms a dense rosette of light green leaves with a bluish-white waxy coating, while burro's tail develops long, trailing stems.

Frequently asked questions

Is burro's tail safe for cats and dogs?
Yes, the plant is safe for cats and dogs. The main risk to the plant itself is leaves and stems breaking off when touched.
Why are the leaves turning yellow and soft?
This is most often caused by excess moisture and the onset of root rot. The potting mix should dry out between waterings.
How often should I water it?
Water after the potting mix dries out. Reduce watering in winter because the plant uses less water.
Can I place it at a sunny window?
Yes, but filter direct sunlight in hot weather. Bright indirect light is ideal.
How can I propagate it at home?
Stem cuttings or individual leaves are the easiest to root. Let them dry before planting, then place them in a light, well-drained potting mix.
Taxonomy — GBIF · Native range and toxicity — POWO · Description — Wikipedia and specialist sources · Photos — Unsplash, illustrations — Wikimedia Commons