Catasetum expansum

Catasetum expansum is a fascinating deciduous orchid species known for its unique, waxy flowers and vigorous, seasonal growth cycle. Unlike many orchids, it goes through a distinct dormant period, making it a rewarding challenge for growers who enjoy following its dramatic growth and bloom rhythm.

Care Guide

• Light: Bright light, including some direct morning sun, during active growth; strong light supports vigorous pseudobulb development.
• Water: Water generously during active growth, but reduce watering sharply once leaves drop and the plant enters dormancy, keeping it nearly dry until new growth appears.
• Temperature: Prefers warm conditions between 65-85°F (18-29°C) during growth; cooler, drier conditions are fine during dormancy.
• Humidity: Thrives with humidity above 50% during active growth; less critical during the dormant resting period.
• Potting Mix: Use a well-draining orchid mix, such as bark and perlite, that allows excess water to escape quickly.
• Fertilizer: Feed regularly with a balanced orchid fertilizer during active growth, then stop completely during dormancy.

By following its natural growth and rest cycle, Catasetum expansum rewards attentive growers with striking, unusual blooms that make it a true conversation piece in any orchid collection.