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Humboldt County's Own Purple Maxx fertilizer bottle with a tribal design and purple accents.
Humboldt County's Own Purple Maxx 0-0-3 fertilizer, 1-gallon jug, purple label with graphic.
Humboldt County's Own Purple Maxx 2.5 gallon fertilizer jug with label.
Humboldt County's Own Purple Maxx 5-gallon jug with label showing purple graphics and text.
Humboldt County's Own Purple Maxx fertilizer bottle with a tribal design and purple accents.
Humboldt County's Own Purple Maxx 0-0-3 fertilizer, 1-gallon jug, purple label with graphic.
Humboldt County's Own Purple Maxx 2.5 gallon fertilizer jug with label.
Humboldt County's Own Purple Maxx 5-gallon jug with label showing purple graphics and text.

Humboldt County's Own Purple Maxx

Official Humboldt County's Own Dealer Model: ETPM-32OZ
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 $109.99 USD
starting from 0% interest financing from /mo.

Payment Options

Options:Pay in Four, Pay Monthly
Amount:Up to $1,500 (Pay in 4)
Up to $10,000 (Monthly)
Schedule:Bi-weekly to Monthly
Term:6 weeks, 12 or 24 months
Interest:0% to 35.99% APR*
Credit Check?Soft Check Only
Schedule:Bi-weekly to Monthly
Term:6 weeks, 6 or 12 months
Interest:0% to 35.99% APR*
Credit Check?Soft Check Only
Finance up to:$4,000
Must apply on a desktop device.
Schedule:Flexible
Term:Up to 36 months
Interest:Processing fee + interest
Lease-to-Own?Yes
Amount:$500 to $10,000
Looking to finance equipment under your corporation? Learn more about Business Financing
  • Delivers visible resin and color shifts within the final 14 to 21 days of bloom
  • Combines the original Stacker formula for tight internodes with modern metabolic triggers
  • Compatible with all hydroponic reservoirs and soil-based feeding schedules
  • View More Details

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THROUGH THE Cultivator's LENS Hands-On Evaluation

Who This Is For

  • You are applying a finishing agent because waiting for natural color shifts risks rot in your late-stage material.
  • You are switching to a metabolic trigger because your current regimen isn't pushing resin production to its full peak.

What We Found

  • We suggest using it as a foliar spray because it covers way more ground and acts faster than a root drench.
  • Even if you don't need the color, the original Stacker formula still does a great job tightening up loose clusters.

What Users Say

  • Growers say they stopped risking late-season mold because they can now trigger deep colors right on schedule.
  • Users who switched to foliar application report that a single bottle lasts through several more harvest cycles.
  • Buyers report that the fragrance and oil production spike significantly even on strains that do not change color.

Humboldt County's Own Purple Maxx

Are you risking brown rot by delaying your harvest, just waiting for that perfect color to develop? While Humboldt County's Own Crystal Burst is ideal for building early-bloom mass, Purple Maxx is the legendary finishing agent that takes the guesswork out of the final weeks. Originally developed as "Stacker" to tighten internodal spacing, this formula was discovered by accident to have a profound effect on color intensification. It allows you to force color development in susceptible strains, ensuring your bag appeal matches the genetic potential without the need to extend the flowering cycle dangerously long.

Purple Maxx is more than just a color enhancer; it is a powerful metabolic trigger that stimulates extreme crystal, resin, and fragrance production, similar to Humboldt County's Own Snow Storm Ultra. Whether used as a root drench or a cost-effective foliar spray, it works quickly to "purple up" plants and maximize essential oil production. For growers aiming for maximum girth and weight alongside color, this product pairs perfectly with Humboldt County's Own G10.

Features

🎨
Extreme Color

Forces intense color development in susceptible strains for maximum bag appeal.

❄️
Resin & Fragrance

Stimulates trichome and terpene production in all strains, similar to Snow Storm Ultra.

🚿
Foliar Efficiency

Highly effective as a foliar spray, making one bottle go much further.

🌊
Flush Compatible

Safe to use during the flushing phase to continue pushing quality, often used alongside Killer Tea.

🧱
Tight Stacking

Retains the properties of its original "Stacker" formula to encourage dense flower clusters.

⏱️
Fast Acting

Delivers visible results quickly when applied 2-3 weeks before harvest.

What's Included

  • 1x Humboldt County's Own Purple Maxx Bottle (Selected Size)

Specifications

Specification Value
Brand Humboldt County's Own
Nutrient Type Finishing Additive & Color Enhancer
Primary Benefit Color Intensity, Resin, Fragrance
Application Methods Root Drench, Foliar Spray
Timing Final 2-3 Weeks of Bloom

Directions

  • Soil & Hydro (Root Drench): Use 1 tsp per gallon of water beginning 2-3 weeks before harvest. For some strains, dosage can be increased to 2-3 tsp per gallon for extreme intensification. Continue using through the flush if you are flushing.
  • Foliar Application: Mix 1 tsp per gallon and apply 2-3 times per week. Spray lightly using the finest mist possible. Important: Do not wet the flowers directly; aim for the leaves. Dosage can be increased to 2 tsp per gallon if desired.

FAQ

When should I start using Purple Maxx?+

Purple Maxx is a finishing product. You should begin using it 2 to 3 weeks before your intended harvest date. It is safe and recommended to continue using it through the flushing stage.

Will Purple Maxx turn every plant purple?+

Purple Maxx forces color development in "susceptible strains," meaning the plant must have the genetic potential to change color. If the genetics are present, this product will maximize that expression. For all strains, it boosts resin, crystals, and fragrance.

How does Purple Maxx relate to Snow Storm Ultra?+

Purple Maxx provides the same trichome and resin-boosting benefits as Snow Storm Ultra but adds the color-intensifying agent. A pro tip is to use Snow Storm Ultra during early/mid-bloom and switch to Purple Maxx for the final 2-3 weeks.

Can I spray Purple Maxx directly on the buds?+

No. When using it as a foliar spray, you should use a fine mist and aim for the leaves, avoiding direct contact with the flowers to prevent moisture-related issues.

Is foliar application better than root drench?+

For some strains, foliar application can be more effective and works quicker. It is also more economical as one bottle goes much further when sprayed compared to mixing it into a reservoir.

Happy To Help

Questions About This Product?

Our specialists are happy to help. Call us or send a message and we'll get back to you within one business day (most of the time within a few hours.)

Call (360) 800-5535

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