Pubicalyx Wax Plant (Hoya pubicalyx)

Pubicalyx Wax Plant

Hoya pubicalyx

Waxy star-shaped blooms glow like tiny porcelain lanterns. Evergreen epiphytic vine.

Partial sun
1/week
Beginner
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Plant Needs

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Sunlight Bright indirect light; tolerate low light but produce fewer blooms; avoid direct midday sun to prevent leaf scorch
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Watering Allow the top 2–3 cm of soil to dry completely between waterings; avoid overwatering to prevent root rot
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Temperature Thrives at 18–25°C; protect from temperatures below 10°C to avoid leaf drop
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Characteristics

  • Leaf: Oval, leathery, dark green with subtle silver flecks; 5–10 cm long
  • Flower: Clusters of 10–20 star-shaped blooms; deep purple to maroon with white centers; waxy texture, fragrant at night
  • Stem: Slender, woody trailing stems with aerial roots for climbing
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Care Guide

Watering

Keep soil slightly moist but not soggy; increase frequency during hot, dry periods

Fertilization

Diluted balanced liquid fertilizer every 4 weeks. Avoid fertilizing in winter when growth slows to prevent nutrient buildup

Banana peel compost tea:Soak fully composted banana peels in water for 24 hours; dilute 1:20 for root drench; discard solids to avoid pest infestations
Pruning
  • Trim leggy stems in spring to encourage bushier, more compact growth
  • Remove spent flower clusters to redirect energy toward new bloom development
  • Tie trailing stems to climbing supports to maintain desired shape; avoid cutting mature woody stems
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA confirmed non-toxic to cats

Humans: No known toxic effects on humans

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Garden Uses & Culture

Culture: Symbolizes patience, as it may take 2–3 years to produce blooms when grown indoors

Usage: Ornamental hanging plant; fragrant night blooms add subtle indoor fragrance