Elephant Tree (Copal) care

Light

Most houseplants will scorch where elephant tree thrives. Give it the windowsill you'd otherwise leave empty because everything else burned there. Full sun for at least six hours per day is essential. Native to rocky desert hillsides with maximum sun exposure. In cultivation, place in the sunniest outdoor spot available. In containers, a south-facing position indoors or under a powerful grow light is required for the trunk to thicken properly. A plant moved abruptly from low light to direct sun bleaches in 48 hours — always acclimatise over a week.

Watering

Aim for once a month supplemental irrigation in summer outdoors; every 2–3 weeks for container plants in active growth; minimal in winter for elephant tree, but treat that as a starting point rather than a rule. A south-facing summer windowsill will dry the pot twice as fast as a north-facing winter room. Lift the pot; if it feels noticeably lighter than it did wet, water it. Mimics desert monsoon patterns: deep, infrequent watering during the warm growing season, then near-complete drought rest in winter. The swollen trunk stores water; never allow roots to sit in wet soil. Container plants dry out faster than in-ground specimens and need more frequent but still moderate irrigation.

Soil and pot

Elephant Tree grows best in extremely fast-draining desert cactus mix or mineral substrate. In the ground, plant in rocky, well-drained caliche-free soil with excellent slope drainage. In containers, use a lean mix of cactus soil amended with 50% pumice, coarse sand, or perlite. Heavy clay or moisture-retaining soils are fatal. A pot with a working drainage hole is non-negotiable for this species — even free-draining mix will turn soggy in a closed planter. If you love the look of a decorative pot without a hole, use it as a cachepot around an inner nursery pot you can lift out to water.

Humidity and temperature

Elephant Tree sits happiest at around 5–30% humidity and 2–42°C (35–108°F). Native to one of North America's driest habitats and adapted to very low humidity. The bark photosynthesises, reducing the plant's need for leaves during drought. Low humidity is preferred; high humidity in combination with cool temperatures encourages fungal bark disease. If you keep the room above 2–42°C year-round and avoid placing the plant near a cold draught, a hot radiator, or an air-conditioning vent, you have already handled the two biggest indoor stressors.

Fertilising

Feed elephant tree sparingly. In its native habitat this species grows in nutrient-poor soils; fertiliser is not essential. If desired, apply a very dilute low-nitrogen cactus fertiliser once in spring and once in midsummer. Over-fertilising promotes soft, rot-prone growth. Skip fertiliser entirely on a stressed, recently-repotted, or actively wilting plant — fertiliser salts make damage worse, not better. Wait for a round of healthy new growth before resuming a feeding rhythm.

Common problems

Below are the issues we see most often on elephant tree in the Growli community. Each is annotated with the most common cause so you know where to start.

• Frost damage — Branch tips are killed by even light frosts, and the trunk can be lost in hard freezes. In marginal climates, grow in a container and move indoors or into a frost-free greenhouse when temperatures threaten to drop below 2°C (35°F).
• Overwatering / root rot — The leading cause of container plant failure. Root rot is swift and often fatal. Ensure the substrate is dry before each watering and never leave the pot in standing water. Reduce watering dramatically in winter even when temperatures remain warm.
• False dieback / apparent death — The tree sheds its tiny leaflets during drought or cold and may appear dead. Scratch the bark to check for green tissue beneath; if green is present the plant is alive. Resume cautious watering in spring to trigger re-leafing.

Propagation

Propagate from semi-hardwood stem cuttings taken in late spring or early summer; allow cut ends to callus for 5–7 days before placing in dry pumice or a lean mineral mix with bottom heat at 28–30°C. Seeds can be sown in spring in a warm (28°C) mineral substrate. Cuttings do not develop the dramatic swollen trunk of seed-grown specimens. Propagation is the cheapest, most satisfying way to expand a collection — and it doubles as insurance against losing a mature plant to an accident. Take a backup cutting once the parent is established and healthy.

Toxicity to pets

Elephant Tree is mildly toxic to pets. Bursera microphylla is not listed by ASPCA. The plant produces aromatic terpenoid resins that may irritate skin or mucous membranes on contact and may cause gastric upset if ingested by pets or children. No severe toxicity is documented, but the resinous sap should be treated with caution. Consult a veterinarian if a pet consumes any part of the plant. If you keep cats, dogs, or curious children in the house, weigh placement carefully — a high shelf or a hanging planter is enough for casual safety. For severe ingestion incidents, call your local vet and the ASPCA Animal Poison Control Center (in the US, 888-426-4435).

Pet-safety status is sourced from the ASPCA Toxic and Non-Toxic Plant List, which catalogues the most-asked-about plants for cats, dogs, and horses.

Elephant Tree deep-dive guides

Every aspect of elephant tree care, each with its own calibrated guide:

• Common elephant tree problems & fixes
• Elephant Tree watering schedule
• Elephant Tree light requirements
• Best soil mix for elephant tree
• Elephant Tree fertilizing guide
• When to repot elephant tree
• How to propagate elephant tree
• How to prune elephant tree
• What's eating my elephant tree?
• Elephant Tree growth rate & size
• Elephant Tree cold hardiness
• Elephant Tree temperature & humidity
• Is elephant tree toxic to cats & dogs?
• Is elephant tree toxic to cats?
• Is elephant tree toxic to dogs?
• All 7 Bursera varieties

Featured in these plant shortlists

Elephant Tree qualifies for 3 curated Growli shortlists — each one filtered objectively from our structured plant-care library, so the selection is consistent and checkable:

• Best drought-tolerant houseplants — Houseplants that prefer to dry out — forgiving of forgotten watering and ideal for travel or busy weeks.
• Best houseplants for full sun — Houseplants that want direct sun — the species for a hot south or west-facing windowsill where shade-lovers scorch.
• Best houseplants for a cool room — Houseplants that tolerate cool conditions down to about 10°C — for an unheated spare room, hallway, porch or a home kept cool.
• Browse all 29 plant shortlists — pet-safe, low-light, drought-tolerant and more

Related guides

Elephant Tree is also known as Elephant Tree, Small-leaf Elephant Tree, and Copal.

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• All 8452 plant care guides in the Growli library