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Dendrobium densiflorum

Dendrobium densiflorum

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Dendrobium densiflorum is an epiphytic or lithophytic species, typically found growing on moss-covered tree trunks or rocks in mountainous regions of the Himalayas, southern China, Nepal, Myanmar, Thailand, Vietnam, and adjacent areas. It naturally occurs at elevations ranging from approximately 400 to 1,830 meters.

Features:

  • Stems & Foliage: Club-shaped pseudobulbs measuring 250–400 mm long and ~20 mm wide, bearing 3–5 leathery, elliptic to lanceolate leaves near the stem apex.

  • Flowers: Spectacular hanging clusters (racemes) densely packed with golden yellow blooms. Each flower is around 30–40 mm wide, featuring pale yellow sepals/petals and a golden-yellow labellum. Flower spikes can measure 60–160 mm long.

  • Fragrance & Aesthetic: The flowers emit a sweet, honey-like scent and the lip often appears fuzzy—making it a sensory delight as well as visually striking.

  • Bloom Season: Blooms from late winter to spring, with peak flowering typically between February and August (with April being a high point).

Care Tips:

Light & Placement

  • Thrives in very bright, indirect light. It can tolerate a bit of full morning sun but should be shaded during intense midday light.

Temperature & Humidity

  • Temperature: Ideal range is:

    • Spring/Summer/Early Fall: 72–82 °F (26–28 °C).

    • Winter: 50–55 °F (10–13 °C), essential for encouraging flowering.

    • General guidance: intermediate to cool growing (16–25 °C).

  • Humidity: Prefers high humidity—around 80% in summer and 60% in winter—paired with good air circulation.

Watering & Dormancy

  • During active growth: Water liberally, keeping the media lightly moist but not soggy. Allow slight drying between waterings.

  • Winter rest: Reduce both watering and fertilization significantly during winter, then resume as new growth emerges in spring.

Potting & Mounting

  • Likes being slightly root-bound in a bark-based, well-draining mix with added components like perlite or charcoal. Overpotting should be avoided.

  • It can also be grown mounted (e.g., on cork or wood) for more natural aeration.

Fertilization

  • Use half-strength, low-nitrogen fertilizer (like 3-12-6) during active new root growth, every 3 out of 4 weeks.

Maintenance

  • Remove spent blooms, but leave mature canes intact—they store energy and may produce keikis (plantlets).

  • Watch for common pests like scale, mealybugs, aphids, and spider mites.

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