Introduction
Serious flowering and fruiting demand serious nutrition. When your plants enter peak bloom, they require elevated levels of phosphorus and potassium to drive flower stacking, fruit density, flavor, essential oil production, and overall harvest quality.
Royal Gold Crown Jewels Imperial Boost 0-15-11 was created for exactly that. Designed to pair with all Royal Gold growing mediums — yet compatible with any soil or soilless substrate — Imperial Boost is a concentrated supplement that supercharges your bloom cycle.
Ideal for greenhouse growers, commercial cultivators, and passionate gardeners, this high-performance formula provides the extra push your plants need when it counts most.
What Is Crown Jewels Imperial Boost 0-15-11?
Imperial Boost is a phosphorus + potassium (PK) bloom supplement engineered to support flowering and fruiting stages. With a 0-15-11 formula,featuring 17% Calcium, it delivers powerful bloom fuel without adding nitrogen — helping plants redirect energy toward floral development and fruit formation.
Use during mid-to-late bloom either as a top-dress or in teas to promote:
- Bigger flowers
- Heavier yields
- Improved fragrance + flavor
- Better flower development + maturation
- Stronger plant metabolism
- Fruit structure + finish
Guaranteed Analysis
- Available Phosphate (P₂O₅) — 15%
- Soluble Potash (K₂O) — 11%
- Calcium (Ca) — 17%
- Magnesium (Mg) — 1.5%
• 1.5% Water-Soluble Magnesium
This mineral-rich analysis supports bloom performance and calcium uptake for improved cell wall integrity and stress resistance.
Derived From
- Bone Meal
- Potassium Magnesium Sulfate
- Sulfate of Potash
- Rock Phosphate
- Seabird Guano
- Kelp Meal
These ingredients supply highly available phosphorus and potassium, along with essential micronutrients, beneficial compounds, and plant-available minerals.
Why Growers Love Imperial Boost
Designed for Bloom
Imperial Boost supports:
- Flower Set
- Robust Bud and Blossom development
- Fruit fill + finish
- Flavor, aroma and essential oil production
- Prevents Blossom End-Rot
Works With All Mediums
Formulated for Royal Gold soils but compatible with:
- Any soil
- Soilless mixes
- Coco
- Raised beds
- Field production
No Nitrogen Added
Ensures energy stays focused on bloom instead of leafy growth.
Tea Friendly
Perfect for:
- Compost teas
- Bloom teas
- Organic regimens
- Hybrid programs
How to Use Crown Jewels Imperial Boost
✅ Top-Dress — Established Plants
Apply:
- 2–5 tbsp per cubic foot of potting medium
OR - 1–2 tsp per gallon of medium
Lightly scratch into soil + water well.
Apply 2–3 times during flowering, spacing applications 10–14 days apart depending on crop needs.
✅ Field Applications
Apply:
- 4–6 cups per 100 ft²
Follow soil test recommendations when possible.
✅ Fertilizer Tea
Add:
- Up to 1 tsp per gallon of water
Mix well and apply to soil.
✅ Aerated Tea (Preferred)
Add:
- Up to 1 tbsp per gallon
OR - ½ cup per 10 gallons
Aerate up to 48 hours using clean, non-chlorinated water.
Apply full-strength OR dilute up to 50:1 for sensitive plants or foliar use.
Apply immediately for best results.
Compatible with:
- Biological inoculants
- Sugar sources
- Most compost tea recipes
Water temperature influences brew time.
Ideal For
✔ Hemp
✔ Vegetables
✔ Fruiting plants
✔ Flower gardens
✔ Trees
✔ Shrubs
✔ Ornamentals
✔ Houseplants
Any crop that flowers or fruits benefits from Imperial Boost.
Approximate Conversions
- 1 tbsp ≈ ½ oz ≈ 14 g
- 1 cup ≈ 8 oz ≈ ½ lb ≈ 227 g
When to Use Imperial Boost
| Growth Stage | Use ? |
| Seedling | No |
| Veg | No |
| Early Bloom | Yes |
| Peak Bloom | Yes |
| Late Bloom | Yes |
Use alongside Crown Jewels Bloom or your preferred nutrient program for optimal flowering support.
Imperial Boost vs. Crown Jewels Bloom
| Feature | Bloom 1-4-2 | Imperial Boost 0-15-11 |
| Primary Role | Bloom fertilizer | Fruit and Flower Booster |
| NPK | 1-4-2 | 0-15-11 |
| Nitrogen | Low | None |
| Phosphorus | Medium | Very High |
| Potassium | Medium | Very High |
| Calcium | 11% | 17% |
| Magnesium | 0.5% | 1.5% |
| Use Stage | Full bloom cycle | Mid-late bloom |
Best practice:
Use Bloom as foundational nutrition + Imperial Boost as a targeted bloom enhancer.
Storage + Safety
- Store in cool, dry place
- Keep away from pets + children
- Use only as directed
Final Thoughts
Heavy flowering + fruiting deserve heavy support.
Royal Gold Crown Jewels Imperial Boost 0-15-11 is a powerful PK supplement that enhances size, density, aroma, and finish — while delivering calcium and magnesium for improved structure and nutrient uptake.
Whether top-dressed or brewed into nutrient tea, Imperial Boost brings the strength and stability your plants need to reach their fullest expression.
Push quality. Drive yields. Elevate bloom with Imperial Boost.
