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

4.85 out of 5
158 reviews

$29.95

✔ Promotes Dense Buds and Big Yields
✔ Enriched With Calcium and Magnesium
✔ Enhances Terpene Production and Flavor

New to Reefertilizer? See how Bloom fits the system
Free shipping over $150 US & Canada · ships in 1–2 days
60-day money-back Happy Plant Guarantee
Discreet packaging Plain brown box, no branding
Made in Canada Blended and bagged in Canada
SKU: FY-E4R4-ZDY5 Category:

Description

Step 3 · Flowering stage

Dense buds. Big terpenes.

When plants start to flower their needs change: after a short growth spurt on stored nitrogen, they need more phosphorus and potassium to fuel flower growth.

Bloom delivers that ratio, enhanced with calcium and magnesium — two common deficiencies that help bud size and terpene production. No more mixing A and B liquids.

At a glance
NPK 5-30-20
Start feeding At 12/12 indoors or first preflowers outdoors
Dose 1–2 scoops (5–10 mL) per 4 L
Enhanced with Calcium + magnesium
Feeds Up to 8 plants

Easy flower feeding schedule

Feed weekly through flower and flush with plain water for the last one to two weeks before harvest.

See the full feeding chart
Reefertilizer Bloom — per 4 L of water
Flower weeks 1–3 1 scoop (5 mL) in 4 L of water
Flower weeks 4–8 2 scoops (10 mL) in 4 L of water
Additional flower weeks 2 scoops (10 mL) in 4 L of water
Last 1–2 weeks Flush with plain water

Stabilizers in the powder may not fully dissolve — they break down naturally and won’t harm plants or irrigation.

How to mix and feed Bloom

1

Measure

Use the scoop in the bag to measure Bloom for this week.

2

Dissolve

Stir it into a small glass of warm water until dissolved.

3

Feed

Mix into the rest of your water and feed, or add to your reservoir.

Why Bloom works

Yield

Dense buds, big yields

High phosphorus and potassium with low nitrogen — the ratio flowering plants want.

Flavour

More terpenes

Calcium and magnesium support bud size and essential-oil production.

Simple

One powder

Everything for flower in one bag, for soil or autopot-style systems.

What’s in the bag

Reefertilizer Bloom Guaranteed analysis
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%
Certificate of Analysis (PDF) ↗

Free Beginner’s Guide with every order

Germination, grow room setup, training for bigger yields, drying and curing — written by grower and co-founder Mike Drouin.

See the feeding chart

Additional information

Weight 0.5 kg

158 reviews for Reefertilizer® Bloom Flowering Nutrients for Cannabis

4.9
Based on 158 reviews
5
88
88%
4
9
9%
3
1
1%
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  1. 5 out of 5

    Rick Venn (verified owner) –

    (0) (0)
  2. 5 out of 5

    Barry Young (verified owner) –

    (0) (0)
  3. 5 out of 5

    Don (verified owner) –

    Lots of big healthy buds. Thanks Mike

    (0) (0)
  4. 5 out of 5

    Rob N. (verified owner) –

    Haven’t gotten there yet but I’m sure it’ll be as good as the rest of your products

    (0) (0)
  5. 5 out of 5

    Tom Clarey (verified owner) –

    Hoping for a great result…I’ll let ya know

    (0) (0)
  6. 5 out of 5

    Howie Parker (verified owner) –

    (0) (0)
  7. 5 out of 5

    Gilles Montpetit (verified owner) –

    Haven’t tried it yet but should be great like your other products

    (0) (0)
  8. 5 out of 5

    Timilehin Dada (verified owner) –

    (0) (0)
  9. 5 out of 5

    Terry (verified owner) –

    (0) (0)
  10. 5 out of 5

    Steve Smith (verified owner) –

    (0) (0)
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