Short-calyx Oxera (Oxera brevicalyx)

Short-calyx Oxera

Oxera brevicalyx

Known for its striking violet-blue blooms and lush foliage, this tropical climber adds drama to any garden trellis. A woody liana from the Verbenaceae family.

Full sun
2/week
Moderate
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Plant Needs

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Sunlight Prefers full sun to partial shade for optimal flowering
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Watering Moderate watering; keep soil evenly moist but not waterlogged
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Temperature Thrives in warm tropical to subtropical climates
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Characteristics

  • Leaves: Opposite, glossy, elliptical, 8–15 cm long, entire margins, leathery texture.
  • Flowers: Tubular, bilabiate, violet-blue, 3–5 cm long, borne in terminal clusters; calyx short, persistent.
  • Stems: Woody, twining, young stems green becoming brown with age.
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Care Guide

Watering

Water regularly to maintain moist soil without standing water

Fertilization

Apply balanced organic fertilizer monthly. Feed regularly during active growth for vibrant flowers

Banana peel compost:Dry and chop banana peels, mix into compost or bury in soil; avoid fresh peels to prevent pests
Pruning
  • Remove spent flowers to encourage continuous blooming.
  • Cut back weak or crossing stems annually.
  • Train young shoots to trellis or support.
  • Thin dense growth to improve air circulation.
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: No known toxicity to cats per ASPCA listing.

Humans: No known toxicity to humans under normal contact or ingestion.

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Garden Uses & Culture

Culture: N/A

Usage: - Ornamental climber for trellises, pergolas, and fences in warm climates. - Attracts pollinators such as bees and butterflies.