HEAVY 16 Veg B, 15 gal

A Two-Part Vegetative Base Feed for Vascular and Root Growth, 15 Gallon (B)

Vegetative growth sets the structural foundation — vascular tissue and root mass — that a plant will lean on once flowering demand increases, so a thin vegetative feed shows up as a limiting factor later in the cycle. HEAVY 16 Veg A and Veg B are formulated as a matched two-part pair, kept in separate bottles so concentrated calcium and phosphate compounds don't bind together before they reach the root zone.

This 15 gallon bottle is Part B of the pair — sized for a commercial operation feeding multiple rooms — and is metered alongside Part A rather than used on its own.

Key Features & Benefits

• Part B of a two-part system — formulated to be mixed and dosed together with Veg Part A
• Builds vascular systems — supports the structural growth a plant relies on through flowering
• Supports root mass development — establishes root capacity ahead of bloom-stage demand
• Works across growing systems — built for soil, coco, and hydroponic feeding programs
• 15 Gallon size — sized for a commercial operation feeding multiple rooms

Who Should Use Veg Part B

Growers running a full HEAVY 16 program during vegetative growth, who are already using Veg Part A and need the matching Part B bottle, will use this size to complete the two-part base feed.

About HEAVY 16

HEAVY 16 was formulated by Bryce Patterson, a Cal Poly-trained horticulturist based in Signal Hill, California, around three principles: high-grade raw ingredients, complex chemistry that simplifies application, and micro-batch blending for consistency. The line is built as a streamlined system — Bud A/B and Veg A/B base nutrients (both built with four calcium forms), plus Prime, Fire, Finish, Roots, and Foliar — designed to work across soil, coco, and hydroponic systems without a long list of separate additives.

Frequently Asked Questions

How is Veg Part B different from Veg Part A?

Veg A and Veg B are split into two bottles so calcium and phosphate-heavy compounds don't bind together and precipitate out of solution when concentrated, which is standard practice across two-part nutrient systems. Part B and Part A are meant to be metered together at the ratio on the feeding chart, not used alone.

When during the crop cycle should I use Veg A/B?

Veg A and Veg B are dosed during vegetative growth, before the plant transitions into flowering, and are typically switched to HEAVY 16's Bud A/B pair once bloom begins. Running Veg A/B too far into flowering can leave the plant short on the phosphorus and potassium bloom demands.

What does Veg A/B build that Bud A/B doesn't emphasize as heavily?

Veg A/B is weighted toward supporting vascular tissue and root mass, the structural growth a plant relies on once flowering increases nutrient and water demand. Bud A/B shifts that emphasis toward bio-available phosphorus and potassium for bloom development.

Can I use this with soil, coco, or hydroponic systems?

Yes, Veg A and Veg B are formulated to work across soil, coco, and hydroponic feeding programs rather than being tied to one growing method. Follow the feeding chart rate for your specific system.

Do I still need a separate cal-mag supplement during veg?

In most cases no, since the calcium forms built into Veg A and Veg B are designed to cover calcium and magnesium needs during vegetative growth without a separate additive. Very hard or very soft water sources may still call for adjustment.