Oncidium varicosum

Oncidium varicosum

This classic yellow dancing lady is native to Brazil and nearby countries. Long, branched sprays carry many small golden flowers. It is widely used as a cut flower in commercial markets. Plants grow best with bright filtered light and intermediate to warm temperatures. North American growers keep it indoors except in frost free zones. Bloom time varies by climate and clone and is often fall to winter.

At‑a‑glance

  • Group/Class: Oncidium species; accepted as Gomesa varicosa (Oncidiinae)
  • Height × spread: 2 to 4 ft tall including spike (0.6 to 1.2 m); 1 to 2 ft wide (30 to 60 cm)
  • Bloom window: fall to winter; varies by climate
  • Color & flower form: bright yellow sprays with red brown markings on pendant branches
  • Fragrance: 0 none
  • USDA hardiness: 10 to 12; grown as a houseplant elsewhere
  • Breeder / Year / Origin: unknown, 1837, Brazil to northern Argentina
  • Cut‑flower notes: commercial cut flower; vase life about 1 to 3 weeks; longer with postharvest treatments
  • Pet safety: safe

How it differs

  • More pendant branching than a typical Oncidium spray.
  • Usually lacks fragrance.
  • Used more often as a cut flower.

Strengths

  • Prolific branching display.
  • Performs in bright, warm rooms.
  • Documented postharvest treatments improve longevity.

Care in one minute

  • Site: bright filtered light; acclimate slowly to avoid sunburn.
  • Medium: open bark mix with perlite; fast drainage.
  • Water: water well; let mix approach dryness between waterings.
  • Feed: quarter strength fertilizer every 2 to 4 weeks during growth; flush monthly.

Watch‑outs

  • Flowers are ethylene sensitive during storage.
  • Spikes can tangle without gentle staking.
  • Leaf tip burn occurs if salts accumulate.

Best uses (tags)

containers, cutting, specimen

Provenance note

Accepted as Gomesa varicosa in current taxonomy. Native from Bolivia and Brazil into northern Argentina.

References

  • Kew – POWO, Gomesa varicosa (syn. Oncidium varicosum)
  • IOSPE – Oncidium varicosum profile
  • SciELO – Postharvest solutions for Oncidium varicosum

Written by: Your Flowers Guide editorial team
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