What is orchids with pseudobulbs?

Orchids with Pseudobulbs

Many orchid species develop thickened, bulb-like stems called pseudobulbs. These structures are specialized for water and nutrient storage, allowing the orchids to survive periods of drought or other unfavorable conditions.

Functionality

• Storage: The primary function of a pseudobulb is to store water and nutrients. This is particularly crucial for epiphytic orchids that grow on trees and are not directly rooted in the soil.
• Support: In some species, pseudobulbs also provide structural support for the plant.

Morphology

• Shape and Size: Pseudobulbs can vary greatly in shape and size depending on the species. They can be round, oval, elongated, or conical. Their size can range from a few millimeters to over a meter in length.
• Leaves: Leaves can emerge from the top of the pseudobulbs, along the sides, or at the base, depending on the species. Some orchids are deciduous, meaning they shed their leaves seasonally, and the pseudobulbs provide the needed water and nutrients until new growth begins.
• Roots: Roots typically emerge from the base of the pseudobulbs.

Common Genera

Several popular orchid genera feature species with pseudobulbs, including:

• Cattleya
• Dendrobium
• Bulbophyllum
• Oncidium
• Cymbidium

Cultivation

When cultivating orchids with pseudobulbs, it's important to allow the potting mix to dry out somewhat between waterings to prevent root rot. The pseudobulbs will provide the plant with a reservoir of water during these dry periods. Wrinkled pseudobulbs can be an indicator that the plant is not getting enough water, while plump, firm pseudobulbs generally indicate good hydration.