Plant care
Ivory Tree (Easter Tree) care
Wrightia antidysenterica
Also called Ivory Tree, Easter Tree, Arctic Snow, Snowflake Tree, Ceylon Tagar.
Watering rhythm
4-7days
Every 4–7 days; allow topsoil to dry slightly between waterings
Light
Bright indirect light (just back from a sunny window)
Soil
Well-draining loamy or slightly sandy soil
Humidity
50–75%
Temp
15–38°C; minimum 10°C
Pet safety
Toxic to pets
Mature size
1.5–3 m tall (5–10 ft) and 1–2 m wide in the ground
Care at a glance
Light
Bright but filtered. Ivory Tree burns within days in unfiltered south-facing summer sun, and stops growing within months in deep shade. Thrives in bright indirect to partial sun; full morning sun with afternoon shade is ideal, especially in hot climates where intense midday sun can scorch leaves. Tolerates some full sun in coastal or less intense climates. When grown indoors, place at a bright east- or west-facing window for best flowering. If you only have a south window, set the plant back 1.5 m or hang a sheer curtain — both knock the intensity down into the right range.
Watering
Watering ivory tree: every 4–7 days; allow topsoil to dry slightly between waterings. The number that matters isn't the day of the week — it's how dry the top 2-3 cm of the pot feels. A finger in the soil tells you more than a watering app. After every watering, tip the saucer. Water thoroughly when the top 2–3 cm of soil becomes dry. The plant is drought-tolerant once established but performs best with regular moisture during the growing season. Avoid waterlogging at all times. Reduce watering in cooler months. Deep, infrequent watering encourages a strong root system.
Soil and pot
Ivory Tree grows best in well-draining loamy or slightly sandy soil. Adapts to a wide range of soils but performs best in well-draining, fertile loam. A general-purpose potting mix amended with 20% perlite is suitable for containers. Avoid heavy clay that retains moisture. pH 6.0–7.5. 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
Ivory Tree sits happiest at around 50–75% humidity and 15–38°C; minimum 10°C (60–100°F; minimum 50°F). Native to humid tropical and subtropical regions; prefers moderate to high humidity. In dry indoor conditions, use a pebble-tray humidifier or regular misting. The plant tolerates moderate dryness once established but will flower more prolifically with consistent humidity above 50%. If you keep the room above 15–38°C; minimum 10°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 ivory tree sparingly. Apply a balanced liquid fertiliser (e.g. 20-20-20) every 3–4 weeks during the growing season (spring through autumn). Switch to a phosphorus-rich bloom formula in late spring to encourage flower production. Do not feed in winter when growth slows. 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 ivory tree in the Growli community. Each is annotated with the most common cause so you know where to start.
- Leaf scorch in intense sun — Brown, dry patches on the upper leaf surface indicate too much direct midday sun, particularly in hot climates. Move the plant to a position with morning sun and afternoon shade. Ensure adequate soil moisture during heat waves — moisture stress and sun intensity together accelerate scorching.
- Failure to flower — Usually due to insufficient light or excess nitrogen fertiliser. Move to a brighter position and switch to a phosphorus-rich bloom fertiliser. The Ivory Tree is a heavy bloomer in appropriate conditions; if moved outdoors in summer it typically flowers generously.
- Mealybugs at leaf axils — Cottony white clusters at the junctions of leaves and stems, causing stunted growth and sticky honeydew deposits. Treat early with a cotton bud soaked in isopropyl alcohol to remove each cluster; follow up with neem oil spray or a systemic insecticide for persistent infestations.
Propagation
By softwood or semi-ripe stem cuttings (8–12 cm) taken in spring or early summer; dip in rooting hormone and root in moist perlite or a cuttings compost at 24–28°C with humidity maintained under a propagation bag. Cuttings typically root in 3–5 weeks. Can also be propagated from seed, though cuttings are faster and more reliable. 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
Ivory Tree is toxic to pets. Wrightia antidysenterica belongs to the Apocynaceae family and contains milky latex with alkaloid constituents. It is not individually listed by ASPCA; however, as an Apocynaceae species with latex-bearing tissues, it should be treated as potentially toxic to dogs, cats, and children. Traditional medicinal use of bark extracts requires careful preparation and dilution, confirming bioactive compounds are present. Contact with milky sap may cause skin irritation in sensitive individuals. Consult a vet if pet ingestion is suspected. 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.
Ivory Tree care — frequently asked questions
What is the common name for Wrightia antidysenterica?
Wrightia antidysenterica is most commonly called Ivory Tree, but it is also known as Ivory Tree, Easter Tree, Arctic Snow, Snowflake Tree, Ceylon Tagar. The names refer to the same species, so care instructions for Ivory Tree apply identically to anything sold as Easter Tree.
How much light does ivory tree need?
Ivory Tree grows best in bright indirect light (just back from a sunny window). Thrives in bright indirect to partial sun; full morning sun with afternoon shade is ideal, especially in hot climates where intense midday sun can scorch leaves. Tolerates some full sun in coastal or less intense climates. When grown indoors, place at a bright east- or west-facing window for best flowering.
How often should I water ivory tree?
Water ivory tree every 4–7 days; allow topsoil to dry slightly between waterings. Water thoroughly when the top 2–3 cm of soil becomes dry. The plant is drought-tolerant once established but performs best with regular moisture during the growing season. Avoid waterlogging at all times. Reduce watering in cooler months. Deep, infrequent watering encourages a strong root system. The finger-test (or lifting the pot to feel its weight) beats a fixed weekly calendar because pot size, light, and season all change how fast the soil dries.
Is ivory tree toxic to cats and dogs?
Ivory Tree is toxic to pets. Wrightia antidysenterica belongs to the Apocynaceae family and contains milky latex with alkaloid constituents. It is not individually listed by ASPCA; however, as an Apocynaceae species with latex-bearing tissues, it should be treated as potentially toxic to dogs, cats, and children. Traditional medicinal use of bark extracts requires careful preparation and dilution, confirming bioactive compounds are present. Contact with milky sap may cause skin irritation in sensitive individuals. Consult a vet if pet ingestion is suspected.
What USDA hardiness zone does ivory tree grow in?
Ivory Tree is rated for USDA zone 10–11 and RHS hardiness H1b. Outside that range, grow it as a container plant that overwinters indoors before the first hard frost.
Ivory Tree deep-dive guides
Every aspect of ivory tree care, each with its own calibrated guide:
- Ivory Tree watering schedule
- Ivory Tree light requirements
- Best soil mix for ivory tree
- Ivory Tree fertilizing guide
- When to repot ivory tree
- How to propagate ivory tree
- Ivory Tree growth rate & size
- Ivory Tree cold hardiness
- Ivory Tree temperature & humidity
- Is ivory tree toxic to cats & dogs?
- Is ivory tree toxic to cats?
- Is ivory tree toxic to dogs?
Featured in these plant shortlists
Ivory Tree qualifies for 4 curated Growli shortlists — each one filtered objectively from our structured plant-care library, so the selection is consistent and checkable:
- Best plants for a north-facing window — Houseplants for a north-facing window: bright, even, indirect light and no scorching direct sun. Each pick verified against its documented light needs.
- Best drought-tolerant houseplants — Houseplants that prefer to dry out — forgiving of forgotten watering and ideal for travel or busy weeks.
- Best humidity-loving houseplants — Houseplants that thrive in a bathroom, kitchen, or by a humidifier — selected by documented humidity preference.
- Houseplants toxic to cats & dogs — The common houseplants the ASPCA lists as toxic to cats and dogs — the ones to keep out of reach, each with its symptoms and a safe alternative.
- Browse all 29 plant shortlists — pet-safe, low-light, drought-tolerant and more
Related guides
Ivory Tree is also known as Ivory Tree, Easter Tree, Arctic Snow, Snowflake Tree, and Ceylon Tagar.