Dendrobium obcordatum

General Information

Dendrobium obcordatum is a sympodial orchid belonging to the sub family Epidendroideae.

Plant Description

Sympodial. Grows to 112cm. Each new growth has numerous leaves that grow to 6.4cm long. Pseudobulbs grow to 112cm

Flowers

Numerous short lasting blossoms appear

Substrate(s)

• Coarse

Climate

Grows at low elevations. Rainfall ranges from 114mm to 638mm per day, heaviest in December and lightest in May. Humidity ranges from 77% to 84%, highest in December and lowest in August. Temperature ranges from 23C to 31C, highest in May (24C to 31C) and lowest in January (23C to 27C).

Watering

These orchids prefer a wet-dry cycle between waterings, they should be watered frequently but only when the moisture is approaching dryness, where the pot feels light and/or the media looks dry. Keep an eye on mounted orchids in warm weather as they may dehydrate quickly.

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

Repotting is best done in a pot the same size or only slightly larger than the previous one.