Herald's Trumpet (Easter Lily Vine) care

Light

Aim for at least 4-6 hours of direct sun on the leaves. Demands full sun for prolific flowering — at least 5-6 hours of unobstructed direct sunlight daily. In its native subtropical Himalayan habitat it grows in open, sunny positions. Under glass, maximum available light is ideal. Shade results in abundant leaf growth but very few flowers. If your only bright window faces south, that's perfect for herald's trumpet — same window any aroid would fry on.

Watering

Watering herald's trumpet: every 5-7 days in growth, every 14 days in winter. 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 throughout the growing season, keeping the root zone moist but never waterlogged. Beaumontia develops a large, fleshy root system that is sensitive to both drought and waterlogging. During the winter rest period, reduce watering considerably. Consistent moisture in spring when flower buds are forming is critical — drought stress at this stage causes bud drop.

Soil and pot

Herald's Trumpet grows best in deep, fertile, well-draining loam. Grows best in rich, moisture-retentive yet free-draining loam. In the ground, dig in generous amounts of well-rotted organic matter. For large containers, use a John Innes No. 3 equivalent with 20% added grit or perlite for drainage. Slightly acidic to neutral pH 6.0-7.0. Repot infrequently — the plant blooms better slightly pot-bound. 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

Herald's Trumpet sits happiest at around 50-75% humidity and 10-32°C (50-90°F). Tolerates the moderate humidity of its subtropical mountain origin. Indoor specimens appreciate 50-65% RH; below 40% causes leaf tip browning. Outdoors in warm climates, natural humidity is usually sufficient. In dry conservatories, pebble trays or humidifiers near the plant help maintain adequate moisture around the foliage. If you keep the room above 10 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 herald's trumpet sparingly. Feed every 2 weeks from early spring through summer with a balanced fertiliser (NPK 10-10-10). Switch to a high-potash formula from midsummer to encourage next season's flowering wood to ripen. Withhold fertiliser entirely from October through February. Top-dress with well-rotted compost in spring for plants in the ground. 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 herald's trumpet in the Growli community. Each is annotated with the most common cause so you know where to start.

• Failure to flower — The most common complaint. Beaumontia blooms on previous season's wood; hard pruning after flowering removes next year's buds. Only prune immediately after flowering has finished. Also check light — full sun is non-negotiable. Cool but frost-free winters (10-15°C) help set flowering buds by mimicking its natural seasonal rhythm.
• Scale insects — Brown or oyster-shell scales encrust older stems and accumulate on leaf midribs, causing yellowing and decline. Prune and dispose of heavily infested stems, treat with horticultural oil in spring when crawlers are active, and follow up with systemic insecticide if infestations are severe.
• Root rot in containers — Waterlogged containers in low light and low temperature in winter rapidly lead to root rot (Phytophthora spp.). Ensure containers have ample drainage holes, do not leave saucers full of water, reduce watering to fortnightly in winter, and keep temperatures above 10°C to maintain root metabolism.

Propagation

Take 10-15 cm semi-hardwood cuttings of side shoots in early summer. Allow the cut end to air-dry briefly, dip in hormone rooting powder (IBA), and insert in a mix of 50% perlite and 50% peat-free compost. Maintain at 24-26°C with a humidity tent. Roots form in 6-10 weeks. Air layering is also successful for thicker stems. Wear gloves — the milky sap causes skin irritation. 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

Herald's Trumpet is toxic to pets. Beaumontia grandiflora belongs to Apocynaceae and contains cardiac glycosides and indole alkaloids. It is not individually listed by the ASPCA, but the family's toxic properties are well established — Apocynaceae includes oleander (Nerium) and related highly cardiotoxic species. Ingestion of any plant part may cause vomiting, drooling, bradycardia, arrhythmias, and potentially serious cardiovascular effects in dogs and cats. Keep away from pets and children; wear gloves when pruning — the milky sap irritates skin and eyes. Contact a vet or ASPCA Animal Poison Control (888-426-4435) if ingestion occurs. 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.

Herald's Trumpet deep-dive guides

Every aspect of herald's trumpet care, each with its own calibrated guide:

• Herald's Trumpet watering schedule
• Herald's Trumpet light requirements
• Best soil mix for herald's trumpet
• Herald's Trumpet fertilizing guide
• When to repot herald's trumpet
• How to propagate herald's trumpet
• Herald's Trumpet growth rate & size
• Herald's Trumpet cold hardiness
• Herald's Trumpet temperature & humidity
• Is herald's trumpet toxic to cats & dogs?
• Is herald's trumpet toxic to cats?
• Is herald's trumpet toxic to dogs?

Featured in these plant shortlists

Herald's Trumpet qualifies for 8 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 trailing & climbing houseplants — Vining and trailing houseplants for shelves, hanging pots, and moss poles — selected by growth habit.
• 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.
• 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.
• Best fast-growing houseplants — Houseplants documented as fast or vigorous growers — quick to fill a pot, cover a pole or trail down a shelf.
• Best fragrant houseplants — Indoor plants with scented flowers or aromatic foliage — greenery you can smell, selected from our care library.
• Browse all 29 plant shortlists — pet-safe, low-light, drought-tolerant and more

Related guides

Herald's Trumpet is also known as Herald's Trumpet, Easter Lily Vine, and Nepal Trumpet Flower.

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