Burro's Tail: Growing Guide

What is burro’s tail?

Burro’s tail (Sedum morganianum) is a trailing succulent native to southern Mexico that grows overlapping rows of plump, blue-green leaves along hanging stems that reach 24–36 inches in length. It is grown as a houseplant across the entire US and as an outdoor perennial in USDA Zones 9–11.

The plant is also called donkey’s tail or lamb’s tail. All three names describe the same species. The leaves are oval, fleshy, and coated in a powdery blue-green bloom that rubs off if touched. Stems trail naturally, making it ideal for hanging baskets, elevated shelves, or window ledges where it can hang freely.

Each stem is covered in tightly packed leaves arranged in a spiral pattern. A well-grown specimen with 30-inch stems weighs surprisingly little — the leaves are mostly water — but the visual density is dramatic. In spring and early summer, mature plants produce small star-shaped pink to red flowers at the stem tips.

Where burro’s tail grows in the US

Burro’s tail is an outdoor perennial only in USDA Zones 9–11. Everywhere else in the US, it is a houseplant that can go outside in summer.

Zone 9–11 coverage includes coastal California, southern Texas, southern Florida, and Hawaii. Gardeners in these zones can plant burro’s tail in containers on patios, in rock gardens, or on slopes where the trailing growth is visible.

Zones 2–8 (the majority of the US) must keep burro’s tail as a container plant brought indoors before first frost. It handles indoor conditions in any zone — it has been grown successfully in Zone 4 Minnesota homes as well as Zone 8 Pacific Northwest homes, as long as light conditions are adequate.

See indoor plants for a broader guide to growing succulents and tropical plants indoors across US climates.

How much light does burro’s tail need?

Burro’s tail needs 4–6 hours of bright indirect light indoors. A south-facing or west-facing window is ideal in most US homes. Outdoor plants in Zones 9–11 prefer full sun with shade from harsh afternoon sun in hot climates.

Understanding the difference between light intensity and duration matters here. See the indirect sunlight guide for practical advice on measuring and positioning plants in different window orientations.

South-facing windows provide the most consistent light year-round in the US, particularly important in winter months when light intensity drops across the northern half of the country.

West-facing windows work in summer. In winter north of Zone 7, west-facing windows may not provide enough light to sustain active growth.

East-facing windows produce adequate light from spring through early fall. In winter, they may cause etiolation — abnormally stretched, pale stems reaching toward insufficient light.

Outdoor summer placement. In Zones 2–8, moving burro’s tail outside from late May through early September dramatically boosts growth. Place it in bright indirect light to start — 4–5 days of acclimation to higher light intensity prevents leaf burn.

Artificial grow lights work for overwintering in dark northern climates. Position a full-spectrum LED grow light 6–12 inches above the plant for 12–14 hours per day.

Burro’s tail watering: the key to success

Water burro’s tail every 14 days in summer (active growing season) and every 30 or more days in winter. The soil must be completely dry before each watering. This is not negotiable — overwatering causes more burro’s tail deaths in the US than any other factor.

How to water. Water thoroughly at the soil line, not on the leaves. Let water run through the drainage holes. Empty the saucer after 30 minutes — never let the pot sit in standing water.

Checking moisture. Insert your finger or a wooden chopstick 2 inches into the soil. If any moisture is present, wait. Only water when the soil is dry at 2 inches.

For comparison, see how often to water snake plant for a similar drought-tolerant houseplant watering approach.

Signs of overwatering:

• Leaves are mushy and translucent rather than firm
• Multiple leaves dropping at once (not just from handling)
• Stem feels soft rather than firm where it meets the soil

Signs of underwatering:

• Leaves are shriveled and wrinkled at the tips
• Leaves feel soft but not mushy
• Soil has been dry for more than 6 weeks

Soil and potting mix for burro’s tail

Burro’s tail requires a fast-draining mix that dries within 7–10 days after watering. Standard potting soil retains too much moisture and causes root rot.

Two reliable options:

1. Commercial cactus and succulent mix — available at any US garden center. Brands like Miracle-Gro Cactus, Palm & Citrus Soil or Black Gold Cactus Mix work without modification.

2. DIY mix — combine 50% regular potting soil with 50% coarse perlite. This produces a mix that drains fast but retains enough structure for roots to grip.

Avoid adding garden soil, which compacts, or compost, which retains moisture. See best soil for indoor plants for a full comparison of potting mixes for succulents and other houseplants.

How to repot burro’s tail

Repot every 2–3 years in spring. Move up one pot size (1–2 inches wider) at a time. Wait 7 days before watering after repotting.

Burro’s tail has shallow, fibrous roots. It does not need a deep pot — a wide, shallow container works better than a tall narrow one.

Steps:

1. Water the plant thoroughly 2 days before repotting (moist soil clings to roots better)
2. Tip the pot gently on its side and ease the root ball out without pulling from the stems
3. Remove any visibly black or mushy roots with clean scissors
4. Place in new pot with fresh cactus mix
5. Do not water for 7 days — this allows any root damage to callous and reduces rot risk

Use terra cotta pots whenever possible. Their porous walls allow moisture to evaporate from all sides, not just the drainage hole.

Burro’s tail vs. similar succulents

‘Burrito’ is a dwarf variety of burro’s tail with shorter, fatter leaves and slightly more compact growth. It is better suited to smaller spaces and is slightly less prone to leaf drop during handling.

How to propagate burro’s tail

Burro’s tail propagates from leaves and stem cuttings. Leaf propagation is the easiest method and uses the leaves that naturally fall during handling.

Leaf propagation:

1. Collect dropped leaves (or gently remove one by pulling it straight out, not to the side)
2. Let leaves dry in open air for 24 hours to callous the base
3. Place leaves flat on top of dry cactus mix — do not bury them
4. Place in bright indirect light
5. Mist lightly every 3–4 days
6. Roots emerge in 2–3 weeks; small rosettes appear in 4–6 weeks
7. Water normally once rosettes are visible and roots are established

Stem cutting propagation:

1. Cut a stem 3–4 inches long with clean scissors
2. Allow the cut end to callous for 24–48 hours in open air
3. Place the calloused end into dry cactus mix, 1 inch deep
4. Do not water for the first week
5. Begin misting or light watering after roots develop (2–3 weeks)

Stem cuttings produce larger plants faster than leaf propagation. Use stem cuttings when you want to quickly create a full hanging basket display.

Common problems with burro’s tail

The most common problems are overwatering, insufficient light, and mechanical leaf loss from handling. Each has a straightforward solution.

Leaf drop. If leaves fall when you barely touch the pot, this is normal. The plant evolved in a habitat where light touch from passing animals should allow vegetative reproduction. Move the pot to a permanent location and leave it there. Each fallen leaf can be propagated.

Stem rot. Soft, black stems indicate rot from overwatering or standing water. Remove the affected stem, let the cut dry for 48 hours, and propagate the healthy portions. Repot in fresh, dry mix. See how to keep plants alive for a broader guide to diagnosing and reversing common houseplant problems.

Etiolation. Pale, stretched stems reaching toward light indicate insufficient light intensity. Move to a brighter window or add a grow light. New growth will emerge correctly; stretched portions do not correct themselves but can be cut and propagated.

Mealybugs. White, cottony deposits at leaf joints indicate mealybugs. Treat with a cotton swab dipped in 70% isopropyl alcohol. Apply directly to insects. Repeat weekly for 3–4 weeks.

For a broader look at air plants and other low-water plants suited to US homes, see the guide to growing air plants, which covers similar care principles for epiphytes.

Burro’s tail outdoors in summer (Zones 2–8)

Moving burro’s tail outdoors from late May through early September is one of the best things you can do for its health. Outdoor light is far more intense than indoor light, even through a south-facing window.

Acclimation is required. Direct outdoor sun after months of indoor conditions will burn leaves within hours. Spend 5–7 days moving the plant from indoor to a shaded porch, then to morning sun, then to full outdoor conditions.

Summer watering outdoors. Outdoor plants may need watering every 7–10 days in summer, especially in hot, dry US climates. Check soil moisture frequently — outdoor heat and air movement dry the soil faster than indoor conditions.

Bring indoors before first frost. The University of Florida IFAS Extension notes succulents in the Sedum genus cannot tolerate frost. In Zone 6b Nashville, that means bringing burro’s tail inside by mid-October. Inspect for pests before bringing in — check under leaves and at stem joints for mealybugs or spider mites.