Foxfarm Beastie Bloomz — High-Phosphorus Bloom Booster for Mid-to-Late Flowering
Best for: Growers wanting to boost flower density and bud size during weeks five through nine of the flowering cycle
Our thoughts
If you're running hydroponics or soil and want tighter, denser flowers without overcomplicating your feed schedule, Beastie Bloomz does the job properly. It's the middle act in the FoxFarm soluble trio — comes after Open Sesame, sits before Cha Ching — and growers report genuinely compact bud development when dosed right. One we sell a lot of for mid-stage flowering support.
Foxfarm Beastie Bloomz is a water-soluble phosphorus-potassium booster designed to supercharge flower development during the critical mid-to-late flowering window. With a punchy 0-50-30 NPK ratio, it strips out nitrogen entirely and floods your plants with the exact nutrients they need when vegetative growth has stopped and bud density matters. Works cleanly across hydroponics, soil, soilless mixes, and aeroponic systems without fuss.
How it compares
This sits in the premium soluble booster tier alongside General Hydroponics Liquid KoolBloom and Advanced Nutrients Big Bud.
- Extreme P-K ratio (50-30) compared to balanced bloom nutrients — pure flowering focus, no compromise
- Works as a standalone supplement or as part of a sequential feeding schedule
- FoxFarm uses higher-quality nutrient sources than many competitors, though you'll pay for it
- Grower feedback: compact, tightly-packed flowers with improved structure when dosed correctly
If you want a straightforward mid-bloom spike without building a complex nutrient system, this delivers.
Usage guidance
Beastie Bloomz is designed to slot into your feed rotation once visible flower structures emerge (typically weeks five to six of plant life).
Hydroponic systems (DWC, NFT, flood-and-drain)
Use 1 teaspoon (6g) per gallon (4L) of reservoir water. Flush the system every two weeks. Apply every other watering once buds show. Important: reduce to half or quarter strength if plants show any stress — full-dose can be aggressive.
Soil and soilless mixes
Use 1/2 to 1 teaspoon (3–6g) per gallon of water, feeding once per week during the mid-to-late flowering phase.
Application tips
Always add Beastie Bloomz to fresh water and mix thoroughly. Do not combine with other dry solubles. Never use as a foliar spray. Follow the sequential timeline: Open Sesame (week five–six), Beastie Bloomz (week six–eight), then Cha Ching (week eight–nine).
Technical specifications
- NPK Ratio: 0-50-30
- Format: Water-soluble powder
- Container sizes: 6oz, 1lb, and bulk
- Nitrogen: 0% (no vegetative growth support)
- Phosphorus: 50% (flower and fruit development)
- Potassium: 30% (cell structure and density)
- Solubility: Fully water-soluble, suitable for all grow systems
- Recommended dosage: 1 teaspoon per gallon (hydroponics); 1/2–1 teaspoon per gallon (soil)
Who this is for
- Hydroponic growers running DWC, NFT, or drip systems who want flower-specific nutrition
- Soil and soilless growers comfortable with soluble supplements and sequential feeding
- Anyone running the full FoxFarm soluble trio and looking to dial in their mid-bloom window
- Growers chasing denser, more compact flower structure rather than maximum bulk alone
Less suitable for absolute beginners without a structured feed plan — this is a specialist tool, not a general nutrient.
Our take
Beastie Bloomz is a proper mid-stage flower booster that delivers on its promise of tighter, denser bud development. The extreme phosphorus ratio is intentional and works — but respect the dosage guidance and start conservative if you're new to it.
If you're building a sequential flowering schedule and want a trusted soluble to bridge the gap between early bloom and finish, worth picking up while stock lasts. Does exactly what it should when dosed right, week in, week out.
