Cercidiphyllum japonicum 'Pendulum' (Weeping Katsura) care

Light

Cercidiphyllum japonicum 'Pendulum' is what florists mean by "bright spot, no direct sun" — close enough to a south or east window to feel the brightness, with a sheer curtain or a few feet of distance keeping the sun off the leaves. Full sun to part shade in a sheltered position; good light enhances autumn colour while a little shade suits hotter sites. Shield the soft early foliage from strong sun and drying wind, which cause unsightly scorch on the cascading shoots. A phone lux-meter at the leaf surface should read 1,500-3,000 lux at noon.

Watering

Water cercidiphyllum japonicum 'pendulum' weekly, keeping soil consistently moist, particularly in summer. The actual day count varies with pot size, light, and season — the finger test (or lifting the pot to feel its weight) is more reliable than a fixed calendar. Empty any drainage saucer afterwards so the pot isn't sitting in water. Like the species it is a moisture-lover intolerant of drought; the trailing leaves crisp at the first sign of dryness. Maintain reliably damp soil, mulch thickly, and water generously in dry weather. Avoid permanent waterlogging around the roots.

Soil and pot

Cercidiphyllum japonicum 'Pendulum' grows best in moist, fertile, humus-rich, well-drained acid to neutral loam. Wants the same cool, leafy, moisture-retentive soil as the species, ideally neutral to slightly acid. Tolerates various soils but resents shallow chalk and drying out. Improve with organic matter and mulch each year to keep the roots cool and damp. 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

Cercidiphyllum japonicum 'Pendulum' sits happiest at around 40-70% humidity and -25 to 30°C (-13 to 86°F). An outdoor tree preferring the moist, sheltered air of woodland-edge or courtyard gardens. Hot, dry and exposed positions scorch the delicate weeping foliage, so cooler, humid, wind-protected sites maintain the best leaf quality. If you keep the room above 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 cercidiphyllum japonicum 'pendulum' sparingly. An annual spring mulch of leaf mould or compost is usually enough; on poorer soils add a balanced slow-release feed in early spring. Maintaining cool, moist roots matters more than heavy feeding for this drought-sensitive tree. 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 cercidiphyllum japonicum 'pendulum' in the Growli community. Each is annotated with the most common cause so you know where to start.

• Leaf scorch — The signature problem: drought, hot sun and wind quickly brown the soft cascading leaves; consistent moisture, mulch and shelter are critical.
• Late-frost injury — Bronze new leaves can be blackened by late spring frosts; site out of frost pockets and exposure to protect the early flush.
• Reversion or unbalanced shape — On grafted plants, vigorous upright shoots can spoil the weeping form; remove strong erect growth and any rootstock suckers to keep the cascade.
• Chlorosis on chalk — Pale leaves on shallow alkaline soil indicate iron lock-out; grow on acid-to-neutral soil or correct with chelated iron and acidic mulch.

Propagation

As a weeping clone it is propagated vegetatively to stay true, usually by grafting onto a Cercidiphyllum japonicum standard to set the cascade height; semi-ripe cuttings under mist and layering can also be used. Seed does not reproduce the pendulous habit. 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

Cercidiphyllum japonicum 'Pendulum' is mildly toxic to pets. Not individually listed by the ASPCA, so its status is treated as uncertain; verify with a vet before assuming it is safe. No specific toxic principle is documented for Cercidiphyllum and third-party sources generally consider it non-poisonous, but without an ASPCA listing it is handled cautiously; ingested foliage may still cause mild gastrointestinal upset. 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.

Cercidiphyllum japonicum 'Pendulum' deep-dive guides

Every aspect of cercidiphyllum japonicum 'pendulum' care, each with its own calibrated guide:

• Cercidiphyllum japonicum 'Pendulum' watering schedule
• Cercidiphyllum japonicum 'Pendulum' light requirements
• Best soil mix for cercidiphyllum japonicum 'pendulum'
• Cercidiphyllum japonicum 'Pendulum' fertilizing guide
• When to repot cercidiphyllum japonicum 'pendulum'
• How to propagate cercidiphyllum japonicum 'pendulum'
• Cercidiphyllum japonicum 'Pendulum' growth rate & size
• Cercidiphyllum japonicum 'Pendulum' cold hardiness
• Cercidiphyllum japonicum 'Pendulum' temperature & humidity
• Is cercidiphyllum japonicum 'pendulum' toxic to cats & dogs?
• Is cercidiphyllum japonicum 'pendulum' toxic to cats?
• Is cercidiphyllum japonicum 'pendulum' toxic to dogs?
• Getting cercidiphyllum japonicum 'pendulum' to bloom

Featured in these plant shortlists

Cercidiphyllum japonicum 'Pendulum' qualifies for 5 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 trailing & climbing houseplants — Vining and trailing houseplants for shelves, hanging pots, and moss poles — selected by growth habit.
• Best flowering houseplants — Indoor plants grown for their blooms — selected from the flowering species in Growli’s plant-care library.
• 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

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Cercidiphyllum japonicum 'Pendulum' is also commonly called Weeping Katsura.

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