Goldenrain Tree (Koelreuteria paniculata)

Goldenrain Tree

Koelreuteria paniculata

Its summer blooms cascade like golden rain, a cheerful street-side staple. Deciduous flowering tree; common names: Pride of India, varnish tree.

Full sun
1–2/week
Moderate
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Plant Needs

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Sunlight Full sun to partial shade; highly tolerant of urban pollution and summer heat
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Watering Water deeply when the top 15 cm of soil is dry; drought-tolerant once fully established
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Temperature Hardy to -20°C; withstands hot summer temperatures up to 35°C with minimal stress
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Characteristics

  • Leaf: Pinnately compound, bright green foliage that turns golden yellow in autumn
  • Flower: Dense terminal panicles of small, star-shaped bright yellow blooms
  • Fruit: Papery, bladder-like green capsules that mature to light brown in fall
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Horticulturist's Insider Field Notes (No AI Fluff)

The Golden 'Finger Test' Rule

Never water on a strict calendar. Stick your index finger 2 inches into the soil. If it feels cool and damp, wait 2–3 days. If bone dry, water thoroughly until it drains from the bottom holes.

Empty the Saucer After 20 Minutes

The #1 houseplant killer is water sitting in the catch tray. Stagnant runoff water starves roots of oxygen and causes root rot.

Turn the Pot Every 2 Weeks

Houseplants naturally lean toward the nearest window light. Give the pot a quarter-turn biweekly to maintain balanced, symmetrical architecture.

Wipe the Dust Away

Dust on leaves acts like a heavy sunshade. Gently wipe broad foliage with a damp cloth monthly to maximize photosynthesis and air purification.

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Care Guide

Watering

Water deeply every 7–10 days during prolonged dry spells

Fertilization

Apply balanced slow-release fertilizer once in early spring. Avoid high-nitrogen fertilizers to prevent excessive foliage growth at the expense of blooms

Eggshell powder topdress:Crush dried eggshells into fine powder; sprinkle 1–2 tbsp around the base of the tree in early spring and late fall
Pruning
  • Remove dead, damaged, or crossing branches in late winter or early spring before new growth emerges
  • Thin crowded inner branches to improve air circulation and light penetration
  • Shape the canopy lightly after flowering to maintain a rounded form; avoid heavy pruning that reduces next year's blooms
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Pet & Human Toxicity & Emergency Guide

⚠️ Toxic to Pets (Cats & Dogs)

Toxicity Warning: Veterinary toxicology registers Goldenrain Tree (Koelreuteria paniculata) as possessing biochemical compounds (such as insoluble oxalates, alkaloids, or saponins) that pose ingestion hazards to felines and canines.

Feline Ingestion Risks (Cats)

Oral pain, hypersalivation (excessive drooling), pawing at mouth, swelling of tongue or lips, vocalization, and vomiting.

Canine Ingestion Risks (Dogs)

Oral mucosal irritation, gagging, retching, lack of appetite, lethargy, diarrhea, and difficulty swallowing.

Immediate Emergency First-Aid

Do NOT induce vomiting without veterinary instructions! Carefully remove remaining plant pieces, gently rinse mouth with cool water, and monitor breathing.

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Chewed leaf or stem? Open PlantFun App to scan the plant, immediately verify the botanical species, and view ASPCA toxicity severity ratings & vet first-aid advice.

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Troubleshooting & Common Plant Problems

Quick diagnostic guide for common care issues affecting Goldenrain Tree (Koelreuteria paniculata):

Yellowing Leaves

Most commonly caused by overwatering or poor drainage. Ensure topsoil dries out between waterings and check for root ventilation.

Brown or Crispy Leaf Tips

Low ambient humidity, hard tap water minerals, or direct midday sunburn. Increase humidity and use filtered water.

Drooping or Wilting Foliage

Indicates dehydration or root damage from prolonged waterlogging. Inspect soil moisture and root firmness.

Common Pests (Spider Mites, Aphids)

Dry indoor air encourages pests. Wipe leaves with a damp cloth and treat with insecticidal soap or neem oil.

🌿 Instant AI Plant Health Check

Take a photo of any leaf on PlantFun App to get instant diagnosis of diseases, pests, and custom care recovery steps.

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Propagation & Repotting Guide

  • Taking Cuttings: During active spring or summer growth, take a healthy 4–6 inch cutting just below a node using clean shears.
  • Rooting Medium: Place cuttings in fresh water or moist perlite mix in bright, indirect light; refresh water weekly.
  • Potting Up: Transplant into well-draining potting mix once roots reach 2 inches in length (typically 3–5 weeks).
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Seasonal Care Calendar

  • Spring & Summer (Active Growth): Water thoroughly as topsoil dries; apply diluted balanced fertilizer monthly; encourage steady growth.
  • Autumn (Transition): Gradually reduce watering frequency as daylight hours shorten; discontinue fertilization.
  • Winter (Dormancy): Water sparingly only when soil is mostly dry; protect from cold window drafts; keep in warm room.
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Frequently Asked Questions

How often should I water my Goldenrain Tree?

Water thoroughly when the top 1–2 inches of soil feel dry. In active growth (spring/summer), water every 1–2 weeks; reduce significantly in winter.

Where is the best indoor location for Goldenrain Tree?

Position in bright, filtered indirect light (e.g., near an east or south-facing window with sheer curtains). Avoid harsh direct midday sun.

Is Goldenrain Tree toxic to pets?

ASPCA confirms no toxicity to cats

When should I repot my Goldenrain Tree?

Repot every 1–2 years in spring when roots outgrow the drainage holes or the soil depletes nutrients.

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Garden Uses & Culture

Culture: Symbolizes prosperity and good fortune in some traditional Eastern Asian cultures

Usage: Ornamental urban street tree; residential landscape specimen; wood used for small decorative crafts

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