Plant care calculator
Bougainvillea Fertilizer Dosage Calculator
Calculate precise fertilizer dosages to trigger Bougainvillea blooms without burning the roots.
Quick Answer
For Bougainvillea, avoid balanced high-nitrogen fertilizers like 20-20-20 during blooming season. Use a bloom booster like 5-10-10 or 0-52-34 (MKP) diluted to target 100-150 ppm phosphorus, applied every 4 weeks. High nitrogen causes lush green leaves but stops flowering completely.
Enter your details
Enter the labeled values below. Results appear without leaving this page.
Recommended Output
Method
Weekly macro and micro targets are calculated from actual water volume, then scaled by dosing strategy, plant density, and CO2 setup. The model uses separate base rates for EI, PPS-Pro, and low-tech systems, then multiplies them by density and carbon-demand factors to match nutrient uptake pressure.
Reference Table
Static Bougainvillea Fertilizer Dosage Calculator Reference
Visible baseline values
These baseline ratios and decision rules are included directly in the page so visitors can review core guidance before using the interactive calculator.
| Scenario | Baseline Rule | Safety Note |
|---|---|---|
| EI planted garden dosing | Macro 5 ml per 20 gal/week and micro 5 ml per 20 gal/week before plant-density and CO2 adjustment. | High-energy method; pair with stable CO2, consistent light, and 40-50% weekly water changes. |
| PPS-style lean dosing | Macro 7 ml per 10 gal/week and micro 7 ml per 10 gal/week before density and CO2 adjustment. | Dose smaller amounts consistently and watch algae response for 2 weeks. |
| Low-tech garden dosing | Macro 2 ml per 20 gal/week and micro 1 ml per 20 gal/week before density adjustment. | Best for low-light tanks without pressurized CO2. |
Formula summary: Formula pattern: weekly_dose_ml = tank_volume_gal x strategy_base_rate x plant_density_multiplier x co2_multiplier. Macro and micro channels use independent base rates, then output a practical schedule with algae-risk caution when energy inputs are high.
The Problem
Planted garden dosing is easy to over- or under-estimate because nutrient demand changes with water volume, plant mass, light intensity, and CO2 availability.
When to Use This Tool
Use this calculator when setting up a planted garden, changing fertilizer methods, increasing plant density, adding CO2, or troubleshooting algae and slow Bougainvillea growth.
Who is this for?
- Planted garden keepers comparing EI, PPS-Pro, and low-tech fertilizer routines
- landscapers adjusting nutrient dosing for plant density and CO2 availability
Feed your Bougainvillea for blooms, not just leaves.
The Golden Rule of Bougainvillea Fertilizer
Bougainvilleas are heavy feeders when it comes to blooming, but they are incredibly sensitive to excess nitrogen. Nitrogen fuels leaf growth. If you feed your plant a standard lawn or generic Bougainvillea fertilizer, you will get a massive, bushy green vine with absolutely zero flowers.
What NPK Ratio to Use?
- Vegetative Growth (Spring): Use a balanced formula like 10-10-10 to establish the plant.
- Blooming Phase (Summer): Switch to a high-phosphorus, high-potassium formula like 5-10-10, or specialized bloom boosters like 0-52-34 (MKP). Dilute concentrated salts carefully to avoid root burn.
Recommended next actions
Next Best Actions
Use the result in a real care workflow with plant profiles, guides, and personalized quizzes.
Guide
Best Fertilizer for Bougainvillea: Feed for Bracts, Not Leaves
Discover the best organic and NPK fertilizers for heavy flowering. Learn how to feed potted bougainvilleas in India using mustard cake (sarson khali), bone meal, and low-nitrogen ratios for maximum color.
Guide
How to Water Bougainvillea Without Killing the Bloom Cycle
Master the ideal watering schedule for Indian climates. Learn dry-down cycles for terrace gardens and balcony pots to prevent root rot during monsoons and trigger heavy blooming in intense summer heat.
Guide
Basic bougainvillea care
A complete Bougainvillea care guide covering watering, sunlight, pruning, fertilizers, propagation, flowering cycles, and troubleshooting for healthy vibrant blooms.
Plant Guide
'Barbara Karst'
Bougainvillea 'Barbara Karst' is a vigorous, popular cultivar prized for its brilliant magenta-red bracts and prolific, nearly year-round blooming habit. One of the hardiest bougainvilleas, it thrives in hot, full-sun gardens, on fences and trellises, and in large containers across tropical and subtropical climates.
Plant Guide
'Adarna' (Shikendari)
Bougainvillea 'Adarna' (Shikendari) is a rare collector's cultivar prized for its spectacular multicoloured bracts that shift between yellow, orange, and deep pink-magenta. A prolific bloomer for hot, full-sun gardens, fences, and large containers across tropical India.
Plant Guide
'California Gold'
Bougainvillea 'California Gold' is a vigorous and popular cultivar prized for its stunning, warm golden-yellow bracts that sometimes shift to a bronze-orange as they age. A prolific bloomer for hot, full-sun gardens, fences, trellises, and containers across tropical and subtropical climates.
garden Fertilizer Dosing Methods Compared
| Method | Best For | Water Change Need | Difficulty |
|---|---|---|---|
| Estimative Index (EI) | High light, CO2-injected planted tanks | Weekly 40-50% | Moderate |
| PPS-Pro | Lean daily dosing and stable planted tanks | Smaller regular changes | Moderate |
| Low-tech dosing | Low light tanks without injected CO2 | Routine maintenance | Easy |
Troubleshooting Guide
1 Algae increases after dosing
Cause: The tank may have too much light, unstable CO2, excess nutrients for the plant mass, or inconsistent water changes.
Reduce light intensity or duration first, keep CO2 stable if injected, maintain regular water changes, and lower dosing strength until plant growth catches up.
Glossary of Terms
- Transpiration
- The process of water movement through a plant and its evaporation from aerial parts.
- Photoperiod
- The period of time each day during which an organism receives illumination.
Scientific References
- Bougainvillea Fertilization — Aquatic Gardeners Association
- Nutrient Dosing in Planted Aquaria — The garden Wiki