Bulbophyllum weinthalii

Also known as: Weinthal's Bulbophyllum or Spilorchis weinthalii ssp. striatum Adelopetalum weinthalii ssp. striatum Bulbophyllum weinthalii ssp. striatum Bulbophyllum weinthalii ssp. weinthalii The Boltched Wax Orchid in the subfamily: Epidendroideae

Native to: Queensland - Australia

General Information

Weinthal's Bulbophyllum is a miniature cool to warm growing epiphytic orchid belonging to the sub family Epidendroideae native to Australia. It is named after the Australian First Collector of Species mid to late in the 1900's.

Plant Description

Grows to 3.2cm. Each new growth has a single oblong shaped leaf that grows to 0.4-3cm long. Pseudobulbs grow to 0.5-2cm

Substrate(s)

• Coarse
• Medium
• Fine
• Bark
• Spaghnum Moss
• Perlite

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 to high elevations. Rainfall ranges from 41mm to 127mm per day, heaviest in July and lightest in February. Humidity ranges from 54% to 67%, highest in August and lowest in May. Temperature ranges from 3C to 26C, highest in June (14C to 26C) and lowest in January (3C to 14C).

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.

During Summer, be sure to keep media moist.

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 during Spring and Summer. Be sure to flush out excess fertiliser by running water through the media regularly year round. Apply fertiliser regularly at half strength year round. Use a high Nitrogen fertiliser during Spring and Summer. Use a high Phosphorous fertiliser during Summer.

Potting

It's best to observe the root system when repotting and use that as a guide:

A plant with a short root system will do better in a shallower pot with a fine mix, or mounted on fern or cork supplanted with a good amount of moss or similar material.

A plant with a long root system often does well in a pot filled with moss or fine media, mixing in perlite and charcoal is always beneficial to reduce the likelihood of the mix becoming soggy and keeps it fresh.

A plant with a coarser long root system can be potted in a deeper pot, but with 2/3 coarse material such as bark, expanded clay, or coco chips and topped with moss or similar material. This will allow the moisture to remain inside the pot but give the roots air as well.

This plant does very well in baskets or suspended pots This plant does well mounted. Repotting is best done annually.