Plant-Prod MJ Finisher 4-31-37
Best bloom booster for cannabis growers seeking denser, high-quality final harvests.
Elevate your cannabis harvest with Plant-Prod MJ Finisher 4-31-37. This specialized water-soluble fertilizer is designed for the crucial finishing stages of plant growth, typically weeks 11 through 14. Its formula boasts elevated phosphorus and potassium levels to maximize bud fullness and density, while also enhancing plant turgidity and disease resistance. The balanced nitrogen prevents deficiencies, ensuring optimal photosynthetic activity during the reproductive phase. For best results, apply during the final weeks and follow with a two-week clear water flush before harvest.
$67.83
Owner Satisfaction
4.6
/ 5
Category Rank
1939
/ 4425
#1939 in Fertilizers
Price vs Category Average
+10%
Above average
Guaranteed Analysis N-P-K
43137
/ --
Who it's for
- Commercial growers aiming for maximum flower density and yield weight
- Professional cultivators using automated or precision irrigation systems
- Quality-focused growers seeking to enhance final flavor and ripening
Who should skip it
- Beginners needing an all-in-one fertilizer for the entire cycle
- Casual gardeners who prefer low-maintenance, forgiving feeding schedules
- Budget-conscious growers looking for a simple, standalone nutrient solution
Performance breakdown
Bud Density Impact
High phosphorus and potassium levels drive significant gains in flower mass.
Solubility Efficiency
Fine powder dissolves instantly without clogging hydroponic irrigation lines.
Nutrient Precision
Targeted NPK ratio perfectly supports the final stages of floral development.
Application Ease
Simple mixing ratios make fertigation straightforward for both hobbyists and pros.
Purity Standards
Dye-free formula ensures no unwanted residues remain in the final harvest.
System Compatibility
Mineral-based composition integrates seamlessly into standard hydroponic and soil setups.
Key Specs
Guaranteed Analysis N-P-K
4-31-37
Package Weight
25 lb.
Total Nitrogen (N)
4%
Available Phosphate (P2O5)
31%
Soluble Potash (K2O)
37%
Nitrate Nitrogen
4%
Ammoniacal Nitrogen
0%
Chelating Agent
EDTA (1.26%)
Features
- Peak bud development formulation
- Enhances bud fullness and density
- Boosts plant turgidity and resistance
- Optimizes photosynthesis in flowering
- No dye added for purity
- Easy application in hydroponics
- Supports final two weeks of growth
- Designed for cannabis finishing
What customers say
Customers consistently praise the Plant Prod MJ Finisher for its exceptional quality and reliable performance during the critical late flowering stage. Growers report seeing a significant boost in flower density and overall weight, confirming its role as a powerful final nutrient solution. The formulation is highly concentrated and mixes easily, making the feeding schedule straightforward even for newer users. This product delivers tangible results, making it a trusted choice for maximizing harvest potential and providing excellent value.
Know before you buy
This formula is specifically engineered for the final stages of the flowering cycle, typically weeks 11 through 14. It is intended to be used once the plant has transitioned fully into the reproductive phase to maximize bud density.
No, Plant-Prod MJ Finisher is formulated without added dyes. This ensures a higher level of purity and prevents any potential residue or staining in your hydroponic systems.
The standard application rate for fertigation is 0.08 ounces of powder per 1 gallon of water. Always ensure the powder is fully dissolved before introducing it to your irrigation system.
No, you should stop using the fertilizer two weeks before harvest. It is recommended to follow the feeding schedule with a two-week clear water flush to ensure the best final quality.
Yes, it is a fully water-soluble powder designed for easy integration into hydroponic systems. Its mineral-based, quick-release formula allows for immediate nutrient uptake by the plants.
The 4% nitrogen content is intentionally low to support the plant's shift away from vegetative growth. This balance prevents excess leafy development while focusing the plant's energy on bud fullness and density.
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