How Big Does a Donkey Tail Plant Grow: Quick Guide for Gardeners

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Donkey tail plants, also known as Sedum morganianum, are an interesting and visually appealing succulent species that originate from Mexico and Honduras. These evergreen perennials come with a unique trailing growth habit, making them an excellent choice for hanging baskets or decorative pots.

Growing steadily but slowly, donkey tail plants can eventually reach up to 4 feet in length, although the average trail is around 24 inches. They exhibit weeping stems packed densely with fleshy, pale blue-green or gray-green leaves spiraling around the stem, creating an eye-catching appearance. In some instances, these plants can grow up to one foot per year under ideal conditions.

When it comes to caring for donkey tail plants, it is essential to provide them with enough sunlight and proper watering techniques. They thrive in locations that receive 4 to 6 hours of direct sunlight daily, which is crucial for their vigorous growth and overall health.

Donkey Tail Plant Overview

Scientific Name and Origin

The Donkey Tail plant, also known as Burro’s Tail or Sedum morganianum, is a fascinating succulent native to Mexico and Honduras. It belongs to the Sedum genus, part of the large Crassulaceae family.

Physical Appearance

Donkey Tail plants are distinct owing to their trailing stems and plump, teardrop-shaped leaves. These succulents are slow-growing, but they can reach trailing lengths of up to 4 feet long in six years, though the average length is closer to 24 inches.

The plant features:

  • Fleshy, blue-green leaves, arranged in a neat, overlapping pattern along the trailing stems.
  • Small, star-shaped flowers in red, pink, or lavender shades that typically bloom during the summer months.

This succulent thrives in temperatures ranging from about 45 and 85°F, making it well-suited for the average climate-controlled household. Donkey Tail plants are popular choices as potted specimens, and they are often placed in hanging containers where the trailing stems can be displayed attractively.

When propagating the Donkey Tail plant, stem cuttings can be used. Shorter cuttings are preferable, as they require less support. To ensure successful propagation, simply remove the leaves from the bottom 1 or 2 inches of the cutting and place it into well-drained soil.

Growth and Size

Height and Width

Donkey tail plants, native to Honduras and Mexico, are evergreen perennial succulents known for their trailing stems densely packed with fleshy, pale blue-green or gray-green leaves. These leaves spiral tightly around the stem and are coated with farina, a protective epicuticular wax. On average, a donkey tail plant can grow up to 24 inches in length, with some mature specimens reaching trailing lengths of up to 4 feet over time 12.

Growth Rate

The growth rate of donkey tail plants is slow yet steady. It takes about six years for the plant to reach full maturity. During this time, the plant can grow up to 1.5 meters long if it is well cared for 3. The plant’s growth rate depends on various factors, including proper watering, adequate sunlight, and the use of appropriate soil mixes.

To maintain a healthy growth rate for your donkey tail plant, consider the following tips:

  • Watering: Ensure that the soil is well-drained to avoid overwatering or underwatering issues. Overwatering can lead to root rot, while underwatering will cause the leaves to wither and fall off. It’s essential to find the right balance for optimal growth.
  • Sunlight: Provide your plant with plenty of bright, indirect sunlight. This will ensure proper photosynthesis and maintain the vibrant colors of the leaves.
  • Soil: Use a well-draining soil mix, such as a mix of potting soil, coarse sand, and perlite at a 1:1:1 ratio. This will ensure proper drainage, reducing the chances of root rot 4.

By following these tips, you will be able to create the perfect environment for your donkey tail plant to thrive.

Planting and Care

Soil Requirements

To ensure healthy growth for your Donkey’s Tail plant, it’s crucial to provide well-draining cacti or succulent soil. A good mix could include one part potting soil, one part perlite, and one part coarse sand. This combination helps prevent root rot, a common issue with succulents when grown in poorly draining soil. Remember to choose a shallow hanging container with drainage holes to accommodate the trailing stems of the plant.

Light and Temperature

Donkey’s Tail plants thrive in bright, indirect light. They can tolerate some direct sunlight, but too much can cause their leaves to become scorched. The ideal temperature range for these plants is 65-80 degrees Fahrenheit (18-26 degrees Celsius). It’s essential to protect them from extreme temperatures, both hot and cold, as this can lead to damage or even plant death.

Watering and Fertilizing

Succulents like the Donkey’s Tail generally require less frequent watering than other houseplants. Water your plant every 14-21 days, allowing the soil to dry out in-between. Overwatering can quickly lead to root rot, so it’s better to err on the side of caution.

During the growing season, in spring and summer, fertilize your Donkey’s Tail once a month with a succulent-specific fertilizer. It’s not necessary to fertilize in the dormant winter months, as this can cause leggy growth or even harm the plant.


Donkey’s Tail plants typically grow slowly, reaching a trailing length of 2-4 feet over several years. Pruning is recommended if you want to maintain a particular length, remove dead or damaged stems, or encourage bushier growth. Use clean and sharp pruning tools, and be gentle when handling the plant, as the fleshy leaves can easily break off.

By following these guidelines for soil, light, temperature, watering, fertilizing, and pruning, your Donkey’s Tail plant will grow steadily and healthily, gracing your space with its unique trailing foliage.

Common Problems and Solutions


A common pest that affects Donkey Tail plants is the mealybug. These small, white insects can be found on the leaves and stems, feeding on the plant’s juices. To control mealybug infestations:

  • Regularly inspect your plant for any signs of pests.
  • Wipe the infested areas with a cotton swab dipped in rubbing alcohol.
  • Introduce natural predators such as ladybugs or lacewings to help combat the problem.
  • In extreme cases, apply insecticidal soap or neem oil as directed on the label.


Donkey Tail plants are relatively disease-resistant, but they can still be affected by diseases such as root rot. This is often caused by overwatering or poor drainage. To prevent and address root rot:

  • Ensure your plant is in a well-draining container with drainage holes.
  • Allow the soil to dry out between watering sessions.
  • Remove any affected stems and roots, and repot the plant in fresh, well-draining soil.

Environmental Issues

Donkey Tail plants can encounter several environmental issues, including:

  1. Harsh light: If your plant’s leaves turn gray or dull green, it may be receiving too much harsh light. Move the plant to a location with bright, indirect light to prevent further damage source.
  2. Overwatering: Overwatering is a common issue for Donkey Tail plants. To avoid overwatering, water your plant only when the topsoil feels dry to the touch, and reduce the frequency in winter months source.
  3. Incorrect temperature: Donkey Tail plants thrive in temperatures between 65-75°F (18-24°C) during the day, and no lower than 50°F (10°C) at night. Ensure the plant is kept away from drafts and sudden temperature changes to promote healthy growth.

By addressing these common problems, you can ensure the healthy growth of your Donkey Tail plant.

Propagation Methods

Donkey tail plants are an attractive option for succulent enthusiasts, known for their long trailing stems. Propagating the donkey tail plant can be done mainly through two methods, each with its own set of procedures.

Stem Cuttings

Stem cuttings are among the popular propagation methods for donkey tail plants. Follow these steps to successfully propagate using stem cuttings:

  1. Select cuttings: Choose stem cuttings that are at least 2 inches (5 centimeters) long with healthy, well-hydrated leaves without yellow, brown, or black spots.
  2. Let cuttings dry: Once you’ve selected the cuttings, let them dry for a few days to allow the cut end to form a callus.
  3. Prepare potting soil: Fill a shallow container with well-draining soil.
  4. Plant cuttings: Poke a hole in the soil and stick the callused end of the stem cutting into the hole, up to the leaves.
  5. Moisten soil: Using a spray bottle, mist the soil around the stem cutting.

Remember to provide sufficient light and monitor the moisture level to avoid overwatering.

Leaf Cuttings

Propagation via leaf cuttings is another efficient method for donkey tail plants. For this method, follow these steps:

  1. Choose healthy leaves: Carefully select leaves without any signs of damage or discoloration.
  2. Remove leaves: Gently twist or pinch leaves off the stem, ensuring that the entire leaf is removed without leaving any part attached to the stem.
  3. Dry leaves: Allow the leaves to dry for a few days, forming a callus on the severed end.
  4. Prepare soil: Fill a shallow container with well-draining soil.
  5. Place leaves on soil: Arrange the callused leaf cuttings on top of the soil.
  6. Mist soil and leaves: Use a spray bottle to mist the soil and leaf tips regularly.

In both methods, patience is key, as it can take several weeks for roots to form and new growth to appear. Make sure to provide the right balance of light, water, and temperature for your propagated donkey tail plants to thrive.

Uses and Benefits

Indoor Plant

Donkey’s tail plants are fantastic indoor plants for several reasons. They are low-maintenance, requiring little care beyond a well-draining soil and bright, indirect light. Their unique appearance adds aesthetic value to any space, with their charming, cascading stems that can grow up to 4 feet long. The pale blue-green, fleshy leaves spiral tightly around the stems, creating a visually appealing texture.

Some benefits of having a donkey’s tail plant indoors include:

  • Purifying the air: Like many succulents, donkey’s tail plants can help filter toxins and improve indoor air quality.
  • Reducing stress levels: Caring for and observing the growth of the plant can provide a calming effect for many individuals.
  • Enhancing interior design: Their trailing growth habit makes them ideal for hanging pots or placing on high shelves, adding visual interest to the room.

Outdoor Landscaping

Donkey’s tail plants can also be incorporated into outdoor landscaping, particularly in areas with a warm, dry climate. Here are a few ways to incorporate them into your outdoor space:

  • Rock gardens: These succulents are well-suited for rock gardens, as they add a cascading effect over the rocks and provide excellent ground cover.
  • Container gardens: Plant them in decorative containers like pots, window boxes or hanging planters, with other succulents or drought-tolerant plants.
  • Border plants: Use donkey’s tail plants as an attractive border to separate areas in your landscape, such as the edges of walkways or flower beds.

There are also environmental benefits to using donkey’s tail plants in your landscaping:

  • Water conservation: With their low water requirements, donkey’s tail plants are an ideal choice for landscaping in drought-prone areas.
  • Attracting pollinators: The plant’s blossoms may attract beneficial insects like bees and butterflies, promoting a healthy ecosystem.

Remember to provide well-draining soil, bright indirect light, and temperatures between 65-80 degrees Fahrenheit (18-26 degrees Celsius) to maintain healthy growth.