Bulbophyllum grandiflorum

Also known as: The Large or Phyllorkis grandiflora Bulbophyllum burfordiense Bulbophyllum micholitzii Bulbophyllum cominsii Hyalosema micholitzii Hyalosema burfordiense Hyalosema cominsii in the subfamily: Epidendroideae

General Information

The Large is a small sympodial warm to hot growing epiphytic orchid belonging to the sub family Epidendroideae.

Plant Description

Sympodial. Grows to 5-28cm. Each new growth has a single leathery thick, erect, rigid, oblong shaped leaf that grows to 6.4-20cm long. Pseudobulbs grow to 5-8cm. The plant tends to climb or sprawl with each new growth

Flowers

A single long lasting blossom appears

Substrate(s)

• Coarse

Care Notes

These orchids like to be watered regulary, especially during warm weather, and prefer a well draining mix or also do well mounted, provided they can be watered daily or even many times a day.

These are quite a forgiving orchid, there are no special requirements to get this orchid to flower, just good care and consistent conditions. Larger plants may be more fussy and can react poorly to change; a poorly timed repotting, a pest infection or an unusually hot day can set them back for a couple of years. However, even plants that have been treated poorly can thrive, and if they are set back they often recover much stronger then they would otherwise be.

Climate

Grows at low elevations. Rainfall ranges from 132mm to 302mm per day, heaviest in June and lightest in December. Humidity ranges from 80% to 84%, highest in January and lowest in May. Temperature ranges from 18C to 31C, highest in May (19C to 31C) and lowest in January (18C to 28C).

Watering

These orchids prefer a constant supply of moisture, with a slight drying out between waterings. Saucers can be placed under pots to retain moisture during hot weather, however the saucers should be removed or let to dry every 1-2 weeks to prevent rot. Keep an eye on the plant especially in hot weather and look for cues of under/overwatering and adjust accordingly.

Keep moisture levels up during hot weather as the plant is prone to dehydration

Fertiliser

Apply liquid based fertiliser per recommended directions. They can benefit from a high phosphate fertiliser leading up to flowering season, followed by a high nitrogen fertiliser when new growth appears, and a balanced fertiliser in other times. These orchids can also tolerate slow release fertiliser applied 1-2 pellets per cup (250ml) of media.

Use balanced fertiliser year round. Apply fertiliser regularly at half strength year round.

Potting

Due to the growth nature of these plants they are best mounted onto cork, tree fern slabs, or even trees if the climate suits. Water regularly especially in hot weather.

Use water retentive media such as moss to prevent roots from drying out quickly This plant does very well in baskets or suspended pots This plant does well mounted to Cork slabs.