Dendrobium mirbelianum

Introducing the Dendrobium mirbelianum - Dark-Stemmed Antler Orchid

The Dendrobium mirbelianum, also known as the Dark-Stemmed Antler Orchid or Mangrove Orchid, is a stunning epiphytic or lithophytic orchid from the family Orchidaceae. This captivating orchid species thrives in the coastal lowland forests, swamps, and savannah regions of Queensland Australia, Solomon Islands, and Papua and New Guinea. It can be found at elevations of up to 650 meters above sea level, where it enjoys the high humidity and ample bright sunlight characteristic of its natural habitat.

The Dendrobium mirbelianum features medium to gigantic-sized cylindrical pseudobulbs with a striking dark blackish brown color. These pseudobulbs range from 0.2 to 1.0 meters in length and 20 to 30 millimeters in width, with leafy upper halves. The dark green leaves are leathery and often exhibit hues of brown or dark red. They measure approximately 80 to 150 millimeters in length and 30 to 40 millimeters in width.

During its blooming period, the Dendrobium mirbelianum produces between four and twelve exquisite flowers. These flowers showcase varying shades of pale to dark brown, measuring 25 to 35 millimeters in length and 30 to 40 millimeters in width.

The sepals and petals may display twisting patterns or remain closed, adding to their unique charm. The labellum, with its yellow color and dark red veins, spans about 30 millimeters in length and 20 millimeters in width, featuring three lobes.

Flowering primarily occurs from August to November, although sporadic blooming may happen during other months. Some plants have widely opening flowers, attracting insects for pollination, while others are self-pollinated and open slowly or not at all.

To successfully cultivate the Dendrobium mirbelianum, it is important to recreate its natural habitat as closely as possible. Here are some helpful tips:

Lighting: Provide ample bright sunlight to mimic the orchid's native environment. Place the plant in a location that receives bright, indirect light, such as a south-facing window or a shaded area outdoors.

Temperature: The Dendrobium mirbelianum thrives in hot to warm temperatures. Maintain a temperature range of 20 to 30 degrees Celsius (68 to 86 degrees Fahrenheit) during the day and slightly cooler temperatures at night.

Humidity: This orchid species requires high humidity levels. Consider using a humidifier or placing a tray of water near the plant to increase the humidity in its immediate surroundings. Regular misting can also be beneficial.

Watering: Provide consistent moisture without allowing the roots to become waterlogged. Water the orchid thoroughly and then allow the growing medium to partially dry out before watering again. Adjust watering frequency according to environmental conditions.

Growing Medium: Use a well-draining orchid mix consisting of bark, sphagnum moss, and perlite or other suitable materials. This will help prevent waterlogging and promote healthy root growth.

Fertilization: Feed the Dendrobium mirbelianum with a balanced orchid fertilizer at half the recommended strength. Apply the fertilizer every two weeks during the growing season and reduce frequency during the dormant period.

Air Circulation: Provide adequate air circulation to prevent the buildup of stagnant air around the plant. This can be achieved by using a small fan or by placing the orchid in a well-ventilated area.

This is a blooming size in a 5” pot about 1 to 2 years to bloom grown from seed limited 

The Dendrobium mirbelianum is a mesmerizing orchid that will add beauty and elegance to any orchid collection. With proper care and attention to its specific needs, you can enjoy the enchanting blooms of this epiphytic wonder throughout the year.