“Precision Nutrition for Maximum Bloom.”

Explosive Flower Density Starts Here.

Obsidian Bloom™ is a precision 1-4-15 mineral bloom booster engineered to increase flower density, strengthen late-stage performance, and maximize your final results.

✔ Increases bloom density during peak flower

✔ Strengthens late-stage finishing performance

✔ Integrates seamlessly into your current feed schedule

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How It Works

Precision Bloom Nutrition for Peak Flower

Obsidian Bloom™ delivers a focused 1-4-15 mineral profile engineered specifically for the flowering phase. When plants demand phosphorus and potassium most, this formula supports dense flower development, structural strength, and finishing performance without unnecessary fillers or complexity.

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How It Works

“Precision Nutrition for Maximum Bloom.”

Apply With Precision. Finish With Power.

Obsidian Bloom™ is designed strictly for the flowering stage. Apply as a soil drench 1–2 times weekly once plants transition into bloom and continue through peak flower development.

✔ Start at Flower Transition

Begin application once plants have entered the bloom phase.

✔ Mix Precisely

• 1 teaspoon per 5 gallons

• ¼ cup per 60 gallons

(Keep formatting clean and bold on ratios.)

✔ Apply as Soil Drench

Feed 1–3 times weekly during flowering only.

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How It Works

“The Flower Density Increase Was Immediate.”

“I introduced Obsidian Bloom at week 2 of flower and within 10 days the bud set was noticeably heavier. Internodal spacing tightened up and the stacking was aggressive. It dissolves instantly and doesn’t cloud my reservoir. This is now a permanent part of my bloom schedule.”

“Clean, Soluble, and Measurable Results.”

“I run a controlled feed program and I track EC and runoff weekly. Obsidian Bloom integrates cleanly without spikes or sediment. What impressed me most was the structural integrity — thicker stems and better support under weight. It performs like a professional formula should.”

“Top-Tier Bloom Formula.”

“I’ve tested multiple 1-4-15 style bloom boosters over the years. Obsidian Bloom delivered tighter flower clusters and stronger terpene output in late flower. No residue, no clogging, no gimmicks. Just results.”

Unlock Maximum Bloom Potential

Give your plants the precision nutrition they need to produce bigger flowers, stronger structure, and higher yields.

Obsidian Bloom™ is a professional-grade bloom fertilizer engineered for growers who demand results. When flowering begins, precision nutrition makes the difference.

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Obsidian Bloom™ is sold for lawful horticultural use only. We do not condone illegal activity. Customers are responsible for compliance with all applicable laws.

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Explosive Flower Density Starts Here.

Precision Bloom Nutrition for Peak Flower

Apply With Precision. Finish With Power.

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Unlock Maximum Bloom Potential

Stay Connected