Dendrobium phalaenopsis

Dendrobium phalaenopsis

Dendrobium phalaenopsis orchid is tall orchid with beautiful flowers in white, violet, purple…

It is the emblem of Queensland, Australia.

This is a very easy houseplant that is also suitable for the cold greenhouse.

Two other names have been proposed, Vappodes phalaenopsis and Dendrobium biggibum and it was proposed to put them in a new genus, Vappodes. But this is not generally accepted.

Dendrobium nobile belongs to the family Orchidaceae, sub-family Epidendroideae, tribe Dendrobieae, sub-tribe Dendrobiinae, genus Dendrobium.

Description:

Dendrobium phalaenopsis is an epiphytic, lythophytic or terrestrial orchid. The plant grows up to 80 cm tall and produces pseudo-bulbs, forming a cane.

The leathery leaves are arranged in pairs along the length of the cane.

The flowers are supported by a petiole of 10-40 cm long, appearing at the top of the cane. They grow in a raceme of 20-40 cm long, with 10-20 flowers. The color varies from purple to bluish or even white, sometimes pinkish with darker labellum.

In its habitat, flowering occurs in the dry season, from May to July. But in culture flowering can occur throughout the year.

Origin:

Queensland, Australia

Habitat:

Lives in a variety of habitats ranging from coastal scrub, trees and rocks, mangroves, riparian vegetation, rainforest, vine thickets, ravines in the open forest and even swamps.



Nomenclature:

Etymology:

Dendrobium: composed of the Greek words dendro (tree) and bios (life).
Phalaenopsis: because the flowers resemble those of Phalaenopsis

Synonyms:

Dendrobium bigibbum var. phalaenopsis, Callista phalaenopsis, Dendrobium bigibbum f. phalaenopsis, Vappodes phalaenopsis

Care:

Temperature:

Diurnal: 20-25°C
Nocturnal: 18-20 °C
No less than 13 °C

Light:

Sun, light

Water:

Water thoroughly during growth (about once a week), decrease during rest (about once every 2 weeks). Ensure that the pseudo-bulbs are not too wrinkled.

Hygrometry:

Resistant to low air humidity indoors

Substrate:

Special substrate for orchids, eventually supplemented with sphagnum

Fertilizer:

During growth: a fertilizer with high nitrogen content.
September to mid-November: a fertilizer high in potassium.

Flowering:

After flowering, cut the flower stalks and observe the rest period. Water every 2 weeks. When growth resumes in spring, increase watering to once a week.

Both new canes and canes that have already flowered, can flourish.

A temperature difference can promote flowering but is not essential.

Repotting:

Every 2-3 years, in the spring. Take a pot only 1 size bigger, it does not like too large pots.

Propagation:

By division when repotting in spring

Image sources

  • Dendrobium phalaenopsis: Own work

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