Reefertilizer® Bloom Flowering Nutrients for Cannabis

$22.69CAD $17.69CAD

(141 customer reviews)

Nutrient blend designed for flowering cannabis plants.

Promotes dense bud growth and terpene production.

Enhanced with Calcium and Magnesium.

Vegan and planet friendly chelated nutrients.

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Reefertilizer® Bloom Flowering Nutrients for Cannabis

$22.69CAD $17.69CAD

The Powerful Powder For Flower

The All-in-One Powder For Cannabis in Flower

Reefertilizer® Bloom is the final step of our cannabis feeding program. Powerful chelated fertilizer provides immediately available nutritional elements to your plants.
Enhanced with calcium and magnesium, Reefertilizer Bloom will help fuel flower development and terpene production. One bag will help grow up to 8 plants.

Easy Weekly Feeding For Flowering Cannabis Plants

Start feeding your plants Reefertilizer Bloom when you switch lights to 12/12 or when preflowers appear.

Flower Weeks 1-31 scoop mixed into 4L of water
Flower Weeks 4-82 scoops mixed into 4L of water
Additional Flower Weeks2 scoops mixed into 4L of water
1-2 weeks before harvestFlush plants with plain water
Reefertilizer Feeding Chart

How to Mix & Apply Reefertilizer Bloom

Add the necessary amount of Bloom to a small glass of warm water.

Mix Bloom into the water until mostly dissolved.

Mix solution into water for feeding or reservoir.

Mixing powder fertilizer for cannabis
cannabis fertilizer

Powder Fertilizer Crafted for Flowering Cannabis

Guaranteed Analysis
(A fancy way of saying total weight by volume)

Total Nitrogen (N)5%
Available Phosphate (P2O5)30%
Soluble Potash (K2O)20%
Calcium (Ca)4%
Magnesium (Mg)3%
Boron (B)0.02%
Copper (Cu)0.05%
Iron (Fe)0.10%
Manganese (Mn)0.05%

Reefertilizer® Bloom

When cannabis plants begin to flower, their nutritional requirements change. Early on in flower, the plant will use its stored nitrogen for a quick growth spurt. After this short period , your cannabis plants will need nutrients with a higher ratio of phosphorus and potassium. These elements will fuel flower growth.

Reefertilizer Bloom also provides micronutrients such as calcium and magnesium. These two elements are common deficiencies and are proven to increase bud size and help terpene production.

Macronutrients For Cannabis in Flower

Micronutrients For Cannabis in Flower

Magnesium
Calcium
Boron
Copper
Iron
Manganese
Zinc

Includes Getting Started Guide 

We created our products to make it easier for folks like you to start growing their own cannabis at home.

We provide our Beginner’s Guide to Cannabis Cultivation free with each order and to our email subscribers.

Learn the basics of growing weed; from germinating seeds, caring for your plants through veg and flower, as well as processing that harvest you worked so hard to grow.

Written by Mike Drouin; an experienced cannabis grower and co-founder of Reefertilizer nutrients.

Beginners guide to cannabis cultivation

What Do Our Customer Think Of Reefertilizer Bloom?

4.8
Based on 159 reviews
  1. Pat (Verified Grower)

    Verified reviewVerified review - view originalExternal link

    First harvest. Things west better than expected.

    Reefertilizer® Bloom Flowering NutrientsReefertilizer® Bloom Flowering Nutrients

  2. Jeff M. (Verified Grower)

    Verified reviewVerified review - view originalExternal link

    It does everything it’s supposed too

    Reefertilizer® Bloom Flowering Nutrients for CannabisReefertilizer® Bloom Flowering Nutrients for Cannabis

    Image #1 from Jeff M.
  3. Bill (Verified Grower)

    Verified reviewVerified review - view originalExternal link

  4. Timothy Babcock (Verified Grower)

    Verified reviewVerified review - view originalExternal link

  5. Anonymous (Verified Grower)

    Verified reviewVerified review - view originalExternal link

    Great results at the end of my crop!! Will def order again saw a difference in bud size for sure.

    Reefertilizer® Bloom Flowering NutrientsReefertilizer® Bloom Flowering Nutrients

Questions and Answers

Are synthetic fertilizers harmful?
Microbes in soil feed off the same elements provided by organic or synthetic nutrients. Avoiding over-fertilization and maintaining the right soil pH will keep soil microbes happy. Organic inputs like Reefertilizer Start will feed the microbes in your soil.

When overused, synthetic fertilizers can end up in wastewater adding to agricultural runoff. That’s why having healthy soil is important. In healthy soil, plants are able to absorb more nutrients meaning you end up with less in your waste runoff.  

What makes Reefertilizer Bloom different from other bloom boosters?
Other bloom boosters usually need to be used with a full NPK fertilizer. Reefertilizer Bloom has a NPK ratio perfect for cannabis in flower as well as all the other micronutrients in bloom boosters.
Enhanced with calcium and magnesium, Reefertilizer Bloom reduces the number of additional inputs you might need.
Our goal at Reefertilizer is to get more folks growing their own cannabis. Reefertilizer provides easy-to-use and affordable nutrients along with straightforward guidance and support.
We designed our products to be lighter and have less packaging than our competitors and we’re happy to offer a 30-day return policy if you’re not happy with our products.
We’re not “big fertilizer”, we’re just three guys who love growing and using cannabis.

When do I start feeding my plants Reefertilizer Bloom?
When you start to see flowers begin to form around the nodes (where the branch meets the stem) you can switch to feeding your plants Bloom. For autoflowers, this is usually 3 or 4 weeks in. For outdoor plants, this is usually around July or August in the northern hemisphere.

How much do I feed my plants?
Start with 1 scoop (5ml) for every 4L (1 gallon) of water. Feed each plant weekly with enough of this solution to fully saturate the soil and have a bit of runoff. You can water your plants as needed in between feedings. Some folks split the dose and feed twice a week. Both work fine, pick whichever method is easier for you.

When I mix the Bloom powder it doesn’t dissolve completely, what gives?
What you’re seeing are left over stabilizers in the powder. These stabilizers are inert, completely safe, and won’t harm your plants or injectors. They will slowly break down over time in your soil or coco mediums.

Can I pre-mix these nutrients?
Because these are chelated nutrients they don’t do well being mixed into water and stored for long periods of time. The elements within the solution can react with each other and lower the effectiveness of the fertilizer. A few days is okay, but anything longer than a week might not be a good idea.

Get More From Your Plants

Reefertilizer Bloom Is Just One Part of a Balanced Diet

Reefertilizer was designed to make growing amazing weed at home easier than ever. The Reefertilizer grow kit will feed your soil as well as up to 8 plants with no need for additional inputs.
When all three are working together a successful harvest is easy to achieve.

Get more from your grow with these other products.

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141 reviews for Reefertilizer® Bloom Flowering Nutrients for Cannabis

Customer Images

Image #1 from Jeff M.
Image #2 from Paul
Image #3 from Paul
Image #4 from Paul
Image #5 from Paul
Image #1 from Jeff M.

Jeff M.

It does everything it’s supposed too

Image #2 from Paul

Paul

The Bloom and Grow are products that are simple to use and get great results! I’m not a professional, but everyone says I have professional buds.

Image #3 from Paul

Paul

The Bloom and Grow are products that are simple to use and get great results! I’m not a professional, but everyone says I have professional buds.

Image #4 from Paul

Paul

The Bloom and Grow are products that are simple to use and get great results! I’m not a professional, but everyone says I have professional buds.

Image #5 from Paul

Paul

The Bloom and Grow are products that are simple to use and get great results! I’m not a professional, but everyone says I have professional buds.

Image #6 from Robert Adams

Robert Adams

Image #7 from Robert Adams

Robert Adams

Image #8 from Anonymous

Anonymous

Great product. Used both bloom and grow. Worked amazing on my photos as well as the autos.

Image #9 from Anonymous

Anonymous

Great product. Used both bloom and grow. Worked amazing on my photos as well as the autos.

Image #10 from Rob E.

Rob E.

I’m so glad I bought the Bloom formula! The plants are amazing!! It was so easy to follow the instructions and the guidance through the PDF was stellar!! I feel confident now and will be purchasing the Start, Grow and Bloom! If just the bloom worked this well, imagine what the plants will look like next year! Thank you!!!

Image #11 from Rob E.

Rob E.

I’m so glad I bought the Bloom formula! The plants are amazing!! It was so easy to follow the instructions and the guidance through the PDF was stellar!! I feel confident now and will be purchasing the Start, Grow and Bloom! If just the bloom worked this well, imagine what the plants will look like next year! Thank you!!!

Image #12 from Rob E.

Rob E.

I’m so glad I bought the Bloom formula! The plants are amazing!! It was so easy to follow the instructions and the guidance through the PDF was stellar!! I feel confident now and will be purchasing the Start, Grow and Bloom! If just the bloom worked this well, imagine what the plants will look like next year! Thank you!!!

Image #13 from Rob E.

Rob E.

I’m so glad I bought the Bloom formula! The plants are amazing!! It was so easy to follow the instructions and the guidance through the PDF was stellar!! I feel confident now and will be purchasing the Start, Grow and Bloom! If just the bloom worked this well, imagine what the plants will look like next year! Thank you!!!

Image #14 from Edward

Edward

Nice bud fattening. Will buy again

Image #15 from Anonymous

Anonymous

Grow good weed indoor or out!

Image #16 from Anonymous

Anonymous

Grow good weed indoor or out!

Image #17 from Anonymous

Anonymous

Grow good weed indoor or out!

Image #18 from Anonymous

Anonymous

Grow good weed indoor or out!

Image #19 from Anonymous

Anonymous

Grow good weed indoor or out!

Image #20 from RYAN

RYAN

Nice when I can get over a pound of flower from one plant.

Image #21 from E-SCOTT

E-SCOTT

Image #22 from Jeffrey Parker

Jeffrey Parker

Thick heavy buds with tons of resin..it's hard to chop up it's so nice and sticky

Image #23 from Marty

Marty

would never use anything else

Image #24 from Marty

Marty

would never use anything else

Image #25 from Marty

Marty

would never use anything else

Image #1 from Jeff M.
Image #2 from Paul
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Image #6 from Robert Adams
Image #7 from Robert Adams
Image #8 from Anonymous
Image #9 from Anonymous
Image #10 from Rob E.
Image #11 from Rob E.
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Image #13 from Rob E.
Image #14 from Edward
Image #15 from Anonymous
Image #16 from Anonymous
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Image #19 from Anonymous
Image #20 from RYAN
Image #21 from E-SCOTT
Image #22 from Jeffrey Parker
Image #23 from Marty
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Image #25 from Marty
  1. Jeff M. (Verified Grower)

    Verified reviewVerified review - view originalExternal link

    It does everything it’s supposed too

    Image #1 from Jeff M.
  2. Bill (Verified Grower)

    Verified reviewVerified review - view originalExternal link

  3. John M. (Verified Grower)

    Verified reviewVerified review - view originalExternal link

  4. Paul (Verified Grower)

    Verified reviewVerified review - view originalExternal link

    The Bloom and Grow are products that are simple to use and get great results! I’m not a professional, but everyone says I have professional buds.

    Image #1 from Paul
    Image #2 from Paul
    Image #3 from Paul
    Image #4 from Paul
  5. Robert Adams (Verified Grower)

    Verified reviewVerified review - view originalExternal link

    Image #1 from Robert Adams
    Image #2 from Robert Adams
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