Why Nitrate Nitrogen Is Preferred for Orchid Fertilizer

Why is nitrate nitrogen the preferred N source?

Answer

Nitrate (NO₃⁻) is the inorganic form most readily used by plant tissue to synthesize proteins for growth. Other forms (e.g., urea) require microbial digestion into simpler compounds—takes weeks to months. In nature, complex organics dominate; thus use dilute fertilizer solutions. When feeding at growth initiation, you want N available immediately.