Grow More® Standard Fertilizer 05-50-17 — 25 lb

Extreme-Phosphorus Soluble Fertilizer Timed to the Flowering Initiation Window

The shift from vegetative growth to bud set is a phosphorus-hungry moment, and a formula that arrives light on phosphorus at exactly that point leaves yield potential on the table. Grow More Standard Fertilizer 05-50-17 pushes phosphorus to an extreme 50% concentration, backed by supporting potassium and minimal nitrogen, to give flowering and fruiting crops the phosphorus intensity that bud set and early flower development call for.

Like the rest of the Standard Fertilizer line, 05-50-17 is 100% water-soluble and dissolves cleanly for drip, overhead, or foliar delivery, with little to no visible residue on crops approaching harvest.

Key Features & Benefits

• 05-50-17 NPK Ratio: Extreme phosphorus with supporting potassium and minimal nitrogen, targeted at the vegetative-to-reproductive transition.
• Flowering-Stage Specialist: The high phosphorus-to-nitrogen ratio signals an earlier, more prolific shift into bud and flower development.
• Clean Foliar Option: Suitable as a foliar feed on flowering and fruiting crops close to harvest, with minimal visible residue.
• Drip-Irrigation Compatible: Dissolves without clogging emitters, suited to commercial-scale fertigation systems.
• High-Purity Solubility: Highly soluble, purified salts deliver consistent nutrition with minimal application-to-application variability.

Who Should Use This

Commercial vegetable, flower, and fruit producers looking to maximize flowering and fruiting performance at the bud-set stage are the direct fit, particularly in greenhouse or controlled-environment operations where nutrient timing at the vegetative-to-reproductive transition drives top-tier yields. Growers typically transition into 05-50-17 from a higher-nitrogen vegetative formula, then move to a finish or bloom-maintenance product afterward.

About Grow More Inc.

Grow More Inc. traces to 1918 as National Chemical Company in Hollywood, California, and now operates from Gardena, California, manufacturing water-soluble field fertilizers alongside its ornamental and specialty nutrient lines.

Frequently Asked Questions

When during the crop cycle should I use 05-50-17?

Apply it at the onset of flowering — from first signs of bud initiation through early flower development. Phosphorus demand peaks at this window, which is when supplementation has the most impact on flower or fruit quality.

How does phosphorus trigger flowering in plants?

Phosphorus is a key building block of ATP, the plant's cellular energy currency, and plays a central role in the signaling that triggers flower bud initiation. Abundant available phosphorus at the right stage accelerates the shift from vegetative to reproductive growth.

Can I use 05-50-17 for the entire growing season?

It can technically run the full season, but its extreme phosphorus level is most cost-effective when reserved for the flowering initiation and bud set window rather than applied throughout vegetative growth, when that much phosphorus isn't needed. Pair it with a lower-phosphorus formula during vegetative growth instead.

How does 05-50-17 compare to Grow More's 05-10-40?

05-50-17 is phosphorus-dominant and built for flowering initiation and bud set. 05-10-40 is potassium-dominant instead, better suited to hardening, cool-climate growth, and the pre-harvest finish phase.

Is 05-50-17 suitable for hydroponic systems?

Yes, its high solubility fits hydroponic reservoir use. Add it to your nutrient solution at rates calibrated to your EC targets, especially when switching over from a vegetative program at flowering initiation.