Jack's Nutrients 5-50-18 UltraViolet Fertilizer | 2.2lb

High-Phosphorus Bud Set Fertilizer, 5-50-18, 2.2lb

Pushing a plant out of strong vegetative growth and into flowering takes more than a standard feeding program. Jack's Nutrients 5-50-18 UltraViolet delivers a serious boost of available phosphorus, promoting bud set and enhanced flower production for greenhouse and controlled environment crops.

2.2lb size, 5-50-18 high-phosphorus bud-set formula.

Key Features & Benefits

• 5-50-18 high-phosphorus ratio — a serious boost of available phosphorus to promote bud set and flower production.
• Shuts down strong vegetative growth — assists the plant's transition into the reproductive or flowering phase.
• Positioned within JR Peters' CEA-focused Jack's Nutrients line — designed for greenhouse and indoor controlled-environment production.
• Water-soluble formula — mixes cleanly into an existing feeding program at the transition to flowering.

Who Should Use Jack's Nutrients UltraViolet

This fits greenhouse and controlled environment growers looking to push a crop's transition from vegetative growth into the reproductive or flowering phase.

About the Jack's Nutrients CEA Line

Jack's Nutrients is JR Peters' hydroponic and Controlled Environment Agriculture sub-line, with UltraViolet formulated specifically to assist the transition from vegetative growth into flowering.

Frequently Asked Questions

What does this formula's phosphorus boost do for the plant?

It delivers a serious boost of available phosphorus specifically to promote bud set and enhanced flower production, going beyond what a general-purpose formula provides. That concentrated phosphorus is the core mechanism behind this formula's role in a feeding program.

When during the growing cycle should this be applied?

The primary goal of this formula is to assist in shutting down the strong vegetative growth stage and promote the switch to the reproductive or flowering phase, so it's best applied at that specific transition point rather than throughout the full cycle. Applying it too early or too late may not produce the intended bud-set response.

What growing environments is this formula suited for?

It's part of JR Peters' Jack's Nutrients line, positioned for greenhouse and indoor controlled-environment production rather than open-field growing. Growers running that kind of CEA operation are the primary audience for this formula.

What size is this listing?

This is the 2.2lb size option. Both sizes share the same 5-50-18 formula, so the choice comes down to how much product a grower needs on hand.