HEAVY 16 Foliar, 2.5 gal

A Calcium-Magnesium Foliar Spray for Tissue Strength and Stress Tolerance, 2.5 Gallon

A plant under sudden stress — a temperature swing, a transplant, a fresh round of cuttings — often can't pull calcium and magnesium through the roots fast enough to keep cell membranes and tissue elasticity where they need to be. HEAVY 16 Foliar is a net-neutral foliar spray designed to be absorbed directly through the leaf surface, supplying calcium and magnesium tied to cell membrane structure and tissue elasticity.

This 2.5 gallon bottle is sized for a regular indoor grower running a full room, moving calcium and carbon-based nutrition through the plant's vascular system ahead of anticipated stress events.

Key Features & Benefits

• Calcium and magnesium supply — supports cell membrane structure and tissue elasticity
• Net-neutral foliar chemistry — designed for absorption through the leaf surface
• Corrects calcium/magnesium disorders — addresses common deficiency symptoms
• Improves tolerance of abiotic stress — supports plants through temperature swings and transitions
• 2.5 Gallon size — sized for a regular indoor grower running a full room

Who Should Use HEAVY 16 Foliar

Growers who want to correct calcium and magnesium-related disorders or prepare plants for stressful events, such as transplanting or temperature extremes, can add Foliar to their spray program.

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 HEAVY 16 Foliar applied?

It's sprayed directly onto the foliage of the crop, where its net-neutral chemistry is absorbed through the leaf surface rather than taken up through the roots. This makes it a faster route to correcting a calcium or magnesium shortfall than a root-zone feed alone.

When should I apply Foliar?

Application is recommended ahead of anticipated stress events, such as before taking cuttings, before transplanting, or before periods of temperature extremes. Timing it before the stress event, rather than after symptoms appear, gives the plant more benefit.

Can Foliar be tank-mixed with other products?

Yes, Foliar's neutral-based chemistry can be combined with compost or biological teas, pest control products, organic oils, surfactants, and sulfur or fungicide treatments in the same spray pass. Always spot-test a new tank mix before spraying a full room.

What deficiencies does Foliar address?

Foliar is formulated to correct calcium and magnesium-based plant disorders, which commonly show up as interveinal chlorosis or weak, brittle new growth. Because it's absorbed through the leaf, it can address a shortfall faster than waiting on a root-zone correction.

How does Foliar differ from HEAVY 16's Bud and Veg base nutrients?

Foliar is a targeted, leaf-applied calcium and magnesium spray for stress events, while Bud A/B and Veg A/B are root-zone base nutrients dosed continuously through the feeding program. The two are complementary rather than interchangeable.