Upcoming Show: Fraser Valley Orchid Show, September 2025

Growing Tips

Understanding Orchid Fertilization

By Michael Thompson
Close-up photograph of thrips damage on orchid flowers and leaves

Proper fertilization is crucial for healthy orchid growth and abundant blooming. This guide will help you understand the nutritional needs of your orchids and how to meet them effectively.

The Basics of Orchid Nutrition

Orchids need three main nutrients: Nitrogen (N), Phosphorus (P), and Potassium (K). Each plays a vital role in plant health and development:

  • Nitrogen: Essential for leaf and stem growth
  • Phosphorus: Promotes root and flower development
  • Potassium: Helps with overall plant health and disease resistance

Choosing the Right Fertilizer

Look for balanced fertilizers (like 20-20-20) or ones specifically formulated for orchids. Quality orchid fertilizers are available locally at GardenWorks Mandeville and Art Knapp Surrey. During the growing season, you might switch to a higher nitrogen formula, while during blooming season, a higher phosphorus formula can encourage better flowering.

Fertilization Schedule

Follow the "weekly, weakly" rule - fertilize weekly with a weak solution rather than monthly with a strong one. This provides consistent nutrition without the risk of burning roots. For personalized advice on fertilization schedules suited to our Fraser Valley climate, visit Paramount Orchids in Abbotsford or attend our monthly meetings at the Langley Community Centre.

Seasonal Adjustments

Adjust your fertilization routine based on your orchid's growth cycle and our local climate conditions:

  • Growing season: Regular weekly feeding
  • Blooming: Switch to bloom-booster formula
  • Resting: Reduce or pause fertilization

Local suppliers like Phoenix Perennials in Richmond and Cedar Rim Nursery in Langley offer seasonal fertilizer formulations suited to different growth stages.

Common Fertilization Mistakes

Avoid these common pitfalls:

  • Over-fertilizing: More is not better
  • Fertilizing dry roots: Always water first
  • Using non-orchid fertilizers: They may lack essential micronutrients
  • Forgetting to flush the potting medium: Salt build-up can damage roots

Remember, proper fertilization is just one part of orchid care. It works best when combined with appropriate light, water, and temperature conditions.

About the Author

Michael Thompson is an experienced orchid grower and active member of the Fraser Valley Orchid Society. They share their knowledge through our blog and monthly meetings.