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Holland Secret Bloom - Product Information

Completing the Holland Secret 3-part nutrient system, is our Holland Secret Bloom . This bloom booster has been a favorite since 1996 for encouraging vibrant flowering and reliable yields. Tailored for the flowering stage, it helps plants produce abundant and healthy blooms. It's the perfect finisher in a system that's been trusted by gardeners for decades.

Throughout your plant's life, Holland Secret Micro provides foundational support, while Holland Secret Grow boosts the vegetative phase. This time-tested lineup ensures your garden flourishes year after year.

WoodsManGrows on Jan 18, 2021

Best Bloom On The Market!

Future Harvest Bloom is my FAVOURITE bloom in the world, in my opinion, it outperforms any other bloom bottle when paired with Future Harvest Micro & Grow! Thanks to Future Harvest, my plants look so much better!

Directions for Use

For vigorous growth and optimal results, adhere to these guidelines:

  • 💧 Shake Well: Ensure Holland Secret Bloom is well mixed before measuring.
  • 💧 Order of Mixing: Begin by adding Micro to your water, stirring thoroughly before adding Grow and Bloom.
  • 💧 Gradual Combination: Introduce each nutrient one at a time, mixing well to prevent nutrient lock-out.
  • 💧 Frequency of Application: Apply the nutrient solution twice per week, adjusting based on plant response and growth stage.
  • 💧 Maintenance: Maintain clean equipment to ensure optimal nutrient uptake.
  • 💧 Complete Nutrition: Use Grow, Micro, and Bloom in tandem for a comprehensive feeding regimen throughout your plant's lifecycle.

Dilution Rates

Dilution rates are intended as a guideline and should be modified based on individual plant needs, growth phase, and environmental conditions.

Growth Stage Target EC Target PPM Metric (per 4 liters) Imperial (per gallon)
Seedlings & Cuttings 0.3 170 1.2 ml ¼ tsp
Seedlings & Cuttings 0.3 170
1.2 ml ¼ tsp
Early Vegetative 1.5 770
2.5 ml ½ tsp
Late Vegetative 2.3 1170 5 ml 1 tsp
Early Flower 1.6
800 10 ml 2 tsp
Late Flower 2.2 1080
10 ml 2 tsp

Minimum Guaranteed Analysis







Derived from: The nutrients in Holland Secret Bloom are derived from a range of high-quality sources including potassium phosphate monobasic, and magnesium sulfate.


Compliance and Certifications

For those interested in the regulatory compliance and detailed composition of our product, we transparently provide all pertinent information. To verify our adherence to the rigorous standards set by the Oregon Department of Agriculture, please visit our certification page.

Furthermore, detailed information regarding the contents and levels of metals in Future Harvest products can be reviewed at the Association of American Plant Food Control Officials (AAPFCO) website.

Canadian customers can access our product’s compliance details with the Canadian Food Inspection Agency's regulations at their fertilizer database.

Future Harvest Nutrient Calculator

By entering your specific grow details, our Nutrient Calculator will outline the total amounts of Future Harvest products needed to take your plants from seeding to harvest, ensuring you're fully prepared for every stage of growth.