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 (Global Guide)
Global guide to bougainvillea fertilizer: organic vs synthetic, low-nitrogen NPK ratios, feeding schedules for pots and ground, and how to trigger heavy blooms without excess leaf growth.
Guide
How to Make Bougainvillea Bloom: The Sun-Stress-Prune Method (Global Guide)
Global guide to trigger heavy bougainvillea blooms using the sun-stress-prune method: full sun, controlled dry spells, strategic pruning, and low-nitrogen fertilizer.
Guide
How to Water Bougainvillea Without Killing the Bloom Cycle (Global Guide)
Master bougainvillea watering worldwide: use the dry-down method to prevent root rot, trigger heavy blooming, and adjust for pots, ground, and all climates.
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
'Singapore Pink'
Singapore Pink is a dwarf, compact bougainvillea cultivar known for its delicate pink bracts and nearly thornless growth habit. Perfect for container gardening, balconies, hanging baskets, and indoor growing.
Plant Guide
3 Star
This 3 Star bougainvillea is valued for its bright pink to magenta bracts and its vigorous climber with strong repeat bloom. In warm tropical and subtropical gardens, it performs as a resilient ornamental climber that rewards full sun, sharp drainage, and a restrained feeding regime with long flushes of colour.
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