Grow More Hula Bloom: Potassium Phosphate for Heavy Flower Set
Strip a bloom booster down to the two nutrients flowers pull hardest, and you land close to what is in this bag. It is a water-soluble 0-50-30 from the Mendocino line, derived from potassium phosphate. That means 50% available phosphate, 30% soluble potash, and no nitrogen at all. The only extras are 0.10% chelated iron and 0.05% chelated manganese, both in EDTA form. For hydroponic reservoirs Grow More lists 1 teaspoon, about 4.7 grams, per 5 gallons of water. Soil drenches run stronger at 1 teaspoon per gallon, applied at the base of the plant. Foliar sprays use 1 tablespoon per 5 gallons. Injector setups get a stock solution of 2 oz per gallon, run at a 1:15 ratio. At the hydroponic rate this 25 lb bag stretches past 12,000 gallons of finished solution. That is a lot of phosphate for a small grow, and it is packed for rooms that mix big tanks every week.
Where a 0-50-30 Fertilizer Fits in the Bloom Schedule
A 0-50-30 fertilizer works as an add-on, never as the whole bloom feed. Bring it in once flowers are set and building, then pull it back before the final weeks so the plant finishes on a cleaner feed. Because it carries no nitrogen, calcium or magnesium, your base nutrient still has to supply all three. Run it at the low end first and watch the leaf tips. Burnt edges in mid-flower usually mean the PK load is outrunning the base. Phosphate at high strength also competes with zinc and iron in the root zone, which is why the chelated iron here earns its place. Never let concentrated phosphate meet a concentrated calcium part in the same jug. The two drop out as a cloudy precipitate and neither reaches the plant. Grow More built the formula for floral crops like plumeria, ginger and adenium. It behaves the same way in any flowering crop that responds to extra PK. Keep the bag closed between scoops, since the powder cakes in humid rooms.
Key Features
- 0-50-30 PK Ratio: Phosphate and potash only, so it slots into any base feed.
- Potassium Phosphate Source: A fully soluble salt that leaves nothing behind in drippers or foggers.
- Chelated Iron and Manganese: EDTA-chelated trace elements hold up in high-phosphate solutions.
- Four Published Methods: Rates are given for hydro, soil drench, foliar spray and injector stock.
- Bulk 25 lb Bag: Covers more than 12,000 gallons at the hydroponic rate, sized for commercial rooms.
Technical Specifications
| Specification | Value |
|---|---|
| Guaranteed Analysis | 0-50-30 |
| Available Phosphate (P₂O₅) | 50% |
| Soluble Potash (K₂O) | 30% |
| Iron | 0.10% (chelated, EDTA) |
| Manganese | 0.05% (chelated, EDTA) |
| Derived From | Potassium phosphate, iron EDTA, manganese EDTA |
| Hydroponic Rate | 1 tsp (4.7 g) per 5 gal |
| Soil Drench | 1 tsp per gal at the base of the plant |
| Foliar Spray | 1 tbsp per 5 gal |
| Injector | 2 oz per gal of stock at 1:15 |
| Package Size | 25 lb |
| Approximate Yield | Over 12,000 gal at the hydroponic rate |