Maximowicz's Holly (Ilex maximowicziana)

Maximowicz's Holly

Ilex maximowicziana

Glossy evergreen foliage bears festive red berries, a classic winter ornamental. Broadleaf evergreen shrub or small tree; common name: Maximowicz's Holly.

Partial sun
1–2/week
Moderate
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Plant Needs

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Sunlight Prefers partial sun to full sun; tolerates light shade, but heavy shade reduces berry production and foliage density
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Watering Water deeply when the top 5–7 cm of soil is dry; avoid waterlogging to prevent root rot
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Temperature Hardy to -10°C; thrives in cool to temperate temperatures; avoid prolonged exposure to extreme heat above 32°C
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Characteristics

  • Leaf: Glossy, dark green, elliptical leaves with serrated margins; leathery texture
  • Flower: Small, white, fragrant, clustered axillary flowers
  • Fruit: Bright red, spherical drupes ripening in autumn and persisting through winter
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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

Keep soil consistently moist but not waterlogged; increase frequency during hot, dry spells

Fertilization

Apply a balanced, acidic fertilizer once monthly. Avoid over-fertilizing, which can burn roots and reduce berry production in subsequent seasons

Eggshell powder topdress:Crush dried eggshells into a fine powder; sprinkle lightly around the base and water in to boost soil calcium and slightly reduce acidity over time
Pruning
  • Thin overcrowded branches in late winter to improve airflow and light penetration
  • Remove dead or diseased wood to maintain plant health and appearance
  • Shape the shrub after fruiting to preserve desired form; avoid heavy pruning that reduces next year's berry crop
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Pet & Human Toxicity & Emergency Guide

⚠️ Toxic to Pets (Cats & Dogs)

Toxicity Warning: Veterinary toxicology registers Maximowicz's Holly (Ilex maximowicziana) 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 Maximowicz's Holly (Ilex maximowicziana):

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.

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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 Maximowicz's Holly?

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 Maximowicz's Holly?

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

Is Maximowicz's Holly toxic to pets?

ASPCA: Toxic; ingestion of leaves or berries may cause vomiting, diarrhea, depression, and excessive drooling

When should I repot my Maximowicz's Holly?

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: Associated with winter festivity and holiday decor in temperate regions

Usage: Ornamental landscaping, hedge plant, and food source for native birds (berries are non-toxic to birds)

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