| TYPE |
LIGHT (seedlings) |
STANDARD |
HEAVY (vandaceous) |
Balanced
(20-20-20) |
0.5 g/L
0.5 ml/L |
1 g/L
1 ml/L |
1.5 g/L
1.5 ml/L |
High N
(30-10-10) |
0.3 g/L
0.3 ml/L |
0.8 g/L
0.8 ml/L |
1.2 g/L
1.2 ml/L |
High P
(10-30-20) |
0.4 g/L
0.4 ml/L |
0.8 g/L
0.8 ml/L |
1 g/L
1 ml/L |
Root Stim.
(Codamine) |
0.3 ml/L |
0.5 ml/L |
0.7 ml/L |
Quick Reference – Application by Stage
| STAGE |
BEST FORMULA |
FREQUENCY |
| Seedling |
Balanced or High Nitrogen |
Every 10–14 days |
| Vegetative Growth |
High Nitrogen |
Every 7–10 days |
| Flower Spike Development |
Balanced |
Every 7–10 days |
| Blooming |
High Phosphorus |
Every 7 days |
| Rest Period |
None or very diluted Balanced |
Monthly or none |
Fertilizer Usage Guide for Orchids
How to Use Orchid Fertilizers
Follow these steps to measure and mix fertilizers correctly for healthy orchids. Always use clean tools and fresh water.
1. Gather Your Tools
Measuring spoon or syringe (ml/cc)
Clean mixing container
Fresh water (rainwater, RO, or low-mineral tap water)
2. Dilution Basics
Most orchid fertilizers are labeled for heavy-feeding crops, so always start with ½ the recommended label dose unless otherwise noted.
3. Measuring by Type
Liquid Fertilizer: Use ml/cc for precise measurement.
Powder Fertilizer: Weigh in grams for accuracy, or use the spoon measurement provided on the label.
4. Mixing
Dissolve the fertilizer fully before applying to plants.
For foliar feeding, use a fine mist sprayer.
For root feeding, water orchids first, then apply fertilizer solution.
5. Application Frequency
Active Growth: Every 7–10 days
Rest Period: Reduce to once a month or suspend feeding, depending on species
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