Growing Cymbidiums in the Ground: Secrets for Success in Temperate Climates

Contrary to popular belief, cymbidiums can thrive when planted directly in the ground—if drainage and crowding needs are met. Historical commercial growers did so successfully in the 1930s–40s before potting in bark became standard.

Site Preparation and Planting

In rainy climates like Kentfield, CA, a raised planter bed at least 12 inches deep is essential. Fill with sandy loam or fine orchid bark. Plant divisions with pseudobulbs just below the surface, firming gently. Cymbidiums prefer crowded roots; space divisions closely (3–5 pseudobulbs each) to encourage blooming. Alternatively, sink the plant in its plastic pot into the ground for easier management.

Critical Success Factors

• Drainage: Prevents root rot in wet winters.
• Crowding: Tight root zones trigger flowering.
• Pest Control: Snails and slugs devour buds—apply iron phosphate bait proactively.
• Labels: Keep variety tags with plants for future reference.

Real-World Experience

The author's own ground-planted cymbidiums took three years to bloom but succeeded once established. Patience and slug control were key.

Key Takeaways

• Use raised beds with fast-draining media.
• Plant divisions tightly (3–5 pseudobulbs).
• Apply snail bait early and often.

Ground culture is viable for cymbidiums with proper preparation and realistic expectations.