Cronk Bonnie 6-5-4 | Autoflower Veg Fertilizer
500mL
$12.88
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Cronk Bonnie 6-5-4 | Autoflower Veg Fertilizer
$12.88
NPK Ratio:
6-5-4
Product Overview
Bonnie 6-5-4 is a complete vegetative nutrient formulated specifically for autoflowering plants during their critical 3-4 week growth window. The nitrogen-forward formula supports rapid leaf and stem development while balanced phosphorus drives aggressive root establishment before flowering begins automatically.
Autoflowers cannot recover from early nutritional mistakes. Once flowering starts, root growth stops and vegetative deficiencies permanently limit yield potential. Bonnie delivers the complete nutrition autoflowers need during their compressed vegetative phase, including chelated iron, manganese, zinc, and copper for maximum bioavailability.
Key Benefits
- Elevated nitrogen (6%) fuels rapid leaf and stem development during the brief veg window
- Balanced phosphorus (5%) drives root establishment that must support the entire lifecycle
- Chelated micronutrients remain plant-available across wide pH ranges
- Stage-specific formula eliminates ratio guesswork for autoflower growers
Ideal For
Autoflower growers who want simplified feeding without the complexity of 3-part systems. Use Bonnie exclusively during vegetative growth, then switch completely to Clyde when pre-flowers appear.
What's Inside
Guaranteed Analysis: 6-5-4
| Total Nitrogen (N) | 6% |
| Available Phosphate (P₂O₅) | 5% |
| Soluble Potash (K₂O) | 4% |
| Copper (Cu) (Chelated) (Chelated) | 0.01% |
| Iron (Fe) (Chelated) (Chelated) | 0.025% |
| Manganese (Mn) (Chelated) (Chelated) | 0.01% |
| Zinc (Zn) (Chelated) (Chelated) | 0.01% |
Derived From:
Potassium Nitrate, Monoammonium Phosphate, Monopotassium Phosphate, Iron EDTA, Manganese EDTA, Zinc EDTA, Copper EDTA
How To Use
Bonnie 6-5-4
Specifically formulated for the vegetative stage of autoflowers with a balanced NPK ratio and essential micronutrients for leaf and stem growth. Use only during vegetative growth - switch to Clyde when flowering begins. Use with every feeding during veg stage.
- Mix in room temperature water (65-72°F / 18-22°C)
- If using Armadillo Armour, add it first before Bonnie
- Use with every feeding during vegetative stage only
- Start week 2 after seedling emergence - little to no nutrients needed week 1
- Gradually increase dosage each week to match plant growth
- Pair with CalMag for optimal results (highly recommended)
- CRITICAL: Switch to Clyde when first flowers appear - never use both together
- For specific dosages and week-by-week schedule, see Feed Schedules section
⚠️ Mixing Order: Armadillo (if using) → Bonnie → CalMag → Other Additives → Monkey Juice (LAST)
Basic Mixing Instructions
- Start with room temperature water (65-72°F / 18-22°C)
- If using Armadillo Armour, add it FIRST
- Add base nutrients in proper order and mix thoroughly
- Add CalMag after base nutrients (if applicable)
- Add other additives, with Monkey Juice LAST
- Check pH (5.6-6.4 depending on stage and medium)
- Apply to plants - water until 10-20% runoff
Customer Reviews
Feed Schedules & Dosage
Bonnie 6-5-4 Feed Schedule (Autoflower Vegetative)
Week-by-week dosage for Bonnie. Use during vegetative stage, then switch to Clyde for flowering.
Vegetative Stage (Weeks 1-4)
| Week | mL/Gallon | mL/Liter |
|---|---|---|
| Week 1 | 0.0 mL | 0.0 mL |
| Week 2 | 2.0 mL | 0.53 mL |
| Week 3 | 3.5 mL | 0.92 mL |
| Week 4 | 5.5 mL | 1.45 mL |
⚠️ Switch to Clyde when pre-flowers appear (typically week 5).
Compatibility
Compatible Plant Types
Hemp
Vegetables
Fruits
Flowers
Houseplants
High-Value Crops
Compatible Growing Mediums
Soil
Coco Coir
Hydroponics
Soilless Mixes
Compatible Irrigation Styles
Hand Watering
Drip Systems
AutoPot Systems
Bottom Feed
Recirculating Systems
Fertigation
General Mixing Tips
- Use room temperature water (65-72°F / 18-22°C)
- Mix each nutrient thoroughly before adding the next
- Never mix concentrated nutrients together
- Check and adjust pH after all nutrients are mixed
- Store nutrients in cool, dark place away from direct sunlight
Frequently Asked Questions
What does Bonnie (6-5-4) do in veg?
It’s a balanced base for autoflowers’ vegetative stage—driving lush foliage, strong stems, healthy roots, and setting up an easy transition to bloom.
When do I run Bonnie during an auto’s life?
From early vegetative growth until you see first pistils; then switch to Clyde for flowering. Don’t run Bonnie and Clyde together.
Do I pair CalMag with Bonnie in veg?
Yes—use CalMag alongside Bonnie to support structure and prevent common Ca/Mg shortfalls as growth accelerates.
What growing media and setups is Bonnie for?
Works in soil, coco, and hydro/DWC, indoors or outdoors—just follow your normal EC and pH targets.
Is Bonnie good for vegetable starts and leafy greens?
Yes—great for greens, herbs, and young veg to build canopy; start ¼–½ strength in containers and increase as growth demands.
Can I feed Bonnie to houseplants?
You can—use light doses every 2–4 weeks during active growth and water plain between feeds; reduce strength in low light.
Complete Your System
Add these essential products for optimal results throughout your grow.
3-6-5
Clyde 3-6-5: Auto Bloom
High phosphorus for autoflower flowering. Pair with CalMag 2-0-0 throughout bloom.
- Autoflower flowering formula
- High phosphorus for bud production
- Complete 2-part system with Bonnie
From $12.88
2-0-0
CalMag 2-0-0: Cal-Mag + Iron
Essential calcium, magnesium, and iron for coco coir, RO water, and LED grows.
- Calcium and magnesium supplement
- Prevents common deficiencies
- Essential for coco coir grows
From $12.88
0-0-1
Sticky Bandit: Terp Booster
Carbohydrate formula for enhanced terpenes, resin, and flavor.
- Carbohydrate and potassium formula
- Enhances terpene production
- Feeds beneficial microbes
From $18.88
Complete Kit
Save 5%
Save with the Complete Kit
Get everything you need in one package and save up to 15%.
Complete Autoflower Kit
Everything you need for autoflowers from seed to harvest. Includes Bonnie, Clyde, CalMag, and Bud Booster.
- Designed for autoflowers
- Complete nutrition start to finish
- Boosts roots, growth & bloom
$58.52
$55.59
Legal Disclaimer
Important Information for Our Customers
At Cronk Nutrients, we are committed to providing high-quality liquid plant fertilizers suitable for a variety of horticultural applications. Our products are designed for legal and responsible use by home growers and gardening enthusiasts. We do not condone or promote the use of our products for illegal purposes.
Customers are responsible for adhering to their local and state laws regarding plant cultivation. It is the sole responsibility of the customer to ensure compliance with all applicable laws and regulations. Cronk Nutrients will not be liable for any misuse of our products in violation of any laws.
By purchasing our products, the customer acknowledges their obligation to comply with the legal standards set forth in their jurisdiction and agrees to use our products in accordance with these laws. Cronk Nutrients reserves the right to refuse service to anyone suspected of using our products for illegal cultivation.
Thank you for choosing Cronk Nutrients for your plant nutrition needs. Grow with confidence, grow legally.