Clyde Autoflower Bloom Fertilizer

$12.00 USD

Boost your autoflower blooms with Clyde by Cronk Nutrients. Tailored for flowering stages with balanced NPK and micronutrients, it ensures larger, healthier buds. Perfect with CalMag. Experience lusher autoflower growth with Clyde!

Size: 500mL


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Autoflower Bloom Fertilizer

Achieve bigger and healthier buds in your autoflowers with Clyde by Cronk Nutrients. This premium fertilizer is formulated with a balanced NPK ratio of 3-6-5 and chelated essential micronutrients, specifically designed to support healthy growth and bud development during the flowering stage of autoflowers.

Give your plants the nutrients they need to thrive and bloom to their full potential. Try Clyde by Cronk Nutrients today and see the difference in your autoflowers!

Attention growers: Clyde by Cronk Nutrients is our premium autoflower flowering nutrient that's a vital component of our autoflower nutrient regimen. Use Clyde with our CalMag during the flowering stage for optimal growth. During the vegetative stage, use Bonnie with our CalMag for the best results. Remember, Bonnie and Clyde, are used during different stages and are never used together at the same time.


Safe for All Plant Types & Grow Mediums

At Cronk Nutrients, we pride ourselves on creating fertilizers that are compatible with a wide range of plants and growing mediums.

  • All Cronk Nutrients'fertilizers are compatible with a wide range of plants, including hemp, vegetables, fruits, and flowers, making them a versatile choice for any grower.
  • Can be used in different growing mediums, including indoor or outdoor soil, hydroponics, and coco coir, ensuring that they work equally well in different types of setups.
  • You can be confident that you're using high-quality and safe products when you choose Cronk Nutrients fertilizers, which are designed to be effective and compatible with a variety of plants and growing methods.


Dilute the suggested amount as per the chart on the back of the bottle into at least 1 litre of water. Apply every other watering. Safe to use in conjunction with any other nutrients. Use for the majority of the plant's flowering stage.

Conversions: 1 Teaspoon = 5mL | 1 Tablespoon = 15 mL | 1 Ounce = 30mL | 1 Cup = 240 mL

Guaranteed Analysis

Guaranteed Analysis


Total Nitrogen (N) – 3%

1.5% Nitrate Nitrogen

1.5% Ammoniacal Nitrogen Available Phosphate (P2O5) – 6% Soluble Potash (K2O) – 5% Boron (B) – 0.009%

Copper (Cu) – 0.01%

0.01% Chelated Copper (Cu) Iron (Fe) – 0.025%

0.025% Chelated Iron (Fe) Manganese (Mn) – 0.01%

0.01% Chelated Manganese (Mn) Molybdenum (Mo) – 0.002%

Zinc (Zn) – 0.01%

0.01% Chelated Zinc (Zn)

Derived from:Potassium Nitrate, Monoammonium Phosphate, Monopotassium Phosphate, Boric Acid, Iron EDTA, Manganese EDTA, Zinc EDTA, Copper EDTA, Sodium Molybdate.

Safety Data

Safety Data Sheet

CLICK HERE for a copy of Cronk Nutrients Clyde 3-6-5 SDS



Cronk Nutrients' online store ships all over Canada and the United States from Canada & the United States. If your country isn't a standard option, please contact us and we can get a shipping quote. We offer free shipping on any order in North America over $125* We ship via UPS, Purolator, FedEx, Canada Post or from our inventory at either or 

All orders are processed within 1 business day. 

Your order will be marked as fulfilled from the moment it’s been boxed up in the warehouse awaiting for the courier to pick it up. Once your order has been fulfilled, you will receive an email with your tracking number. Your tracking details will appear once the courier has processed the package.  CLICK HERE for more information about our shipping policy. 


Customer Reviews

Based on 15 reviews
Brian R.
Worth it? Maybe?

Been using for a few years. Whole auto lineup. Now gotten too expensive. Good results but shipping and cost gets higher. Switching in a few months for the next run. Don’t need Bonnie but cheaper on Amazon to buy both then just Clyde from the manufacturer. Ridiculous. Can’t even use monkey juice in AP. Then they email me after the review saying it’s out of their control. Bullcrap.

Hey Brian,

First, Thanks for the long time support!

Shipping unfortunately is out of our control, we use the carrier rates and as fuel prices increase and other cost the carrier increase our rates. We do offer free shipping on all orders over $125. Amazon is cheaper when on sale.

Regarding Monjey Juice, we released a new formula, same ingredients as before but we added more to it including some more beneficially enzymes that work together and make Monkey Juice work in hydroponics now :)

Hopefully we see you back soon

Good stuff for the girls!

I'm doing high frequency fertigation with coco/perlite on 18 plants perpetually. The Cronk nutrient line is excellent. We are feeding the girls 72 liters of water with nutrients per day and this keeps it simple for us. Imagine preparing 7200 liters of water every 100 days!

Thank you Cronk.

P.S. I would like a few more Cronk stickers they look nice on my pots!

Best fertilizer for autoflowers

I've tried a number of different fertilizer lines. The cronk autoflower line is by far my favorite. They are designed for autoflowers and you can follow their feed chart exactly with no problems. Ph is stable and my plants look great. Awesome product

Timm Carr
I love my Cronk Nutes

this is my 3rd time buying the full line of autolfower nutes, and i LOVE THEM, i get over a QP per plant of nice fat tight smelly nugs. i will continue to support cronk!

Terrance C.

Works great and smells good

Legal Disclaimer

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.