Foliar + Specialty Applications

Foliar fertilizer goes on the leaves, so plants get quick support during stress, deficiencies or key growth stages. Pick Optic Foliar or PUSH for leaf feeding, Clonex Mist for cuttings, and Cal-Mag Plus or Revive when calcium and magnesium run short.

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Foliar + Specialty Applications

Foliar Fertilizer and Specialty Plant Applications

Foliar fertilizer feeds plants through the leaves, a fast way to correct a deficiency or support a stress point between root feeds. This collection gathers Optic Foliar, Heavy 16 Foliar, PUSH and Nectar for the Gods Bloom Khaos. Rooting sprays, microbe packs and calcium-magnesium rescues for special jobs round it out....

Foliar fertilizer infographic: foliar nutrient, rooting spray, microbe and Cal-Mag types, label rates and best time to spray

For a wider range of leaf feeds, see our foliar sprays. Root-zone feeding starts with our organic and natural nutrients, and all of them belong to the wider nutrients range.

Types of Foliar and Specialty Products

Foliar Nutrients and Bloom Sprays

Optic Foliar Switch is sprayed on day 7 and day 17 of bloom, mixed with Optic Foliar Transport at 10 mL per liter. PUSH includes its own surfactant and covers up to 8 kW of canopy at 50 mL per gallon. Heavy 16 Foliar is a 1-0-2 with calcium and magnesium.

Cloning and Propagation Sprays

Clonex Mist is the leaf spray in the Clonex system, ready to use and free of rooting hormone. It supports cuttings until roots form, while Clonex Clone Solution and CX Clone Start feed the rooting stage.

Microbes and Calcium-Magnesium Rescues

OG Biowar Foliar Pack mixes at 1 teaspoon per liter to put microbes on leaves and stems. Botanicare Cal-Mag Plus, Advanced Nutrients Revive and Humboldt Sea Cal treat calcium and magnesium shortfalls.

How Growers Use Foliar Products

UConn Extension advises spraying in the cooler morning or evening, since fertilizer plus strong sun can damage leaves. It also notes foliar feeding supplements root nutrition rather than replacing it. Follow each label for timing, and mix fresh. Spot-test a few leaves first, and only tank-mix products whose labels allow it.

Frequently Asked Questions

What is foliar feeding?

It is applying nutrients as a spray on leaves and stems, where they are absorbed directly. UConn Extension calls it useful for specific deficiencies but not a substitute for root feeding. PUSH, Heavy 16 Foliar and the Optic Foliar line are built for it.

When is the best time to spray foliar fertilizer?

Spray in the cooler morning or evening hours, as UConn Extension recommends, so sun and fertilizer do not scorch the leaves. Some labels differ: Optic Foliar says Overgrow can go on in full light. Always check the product label first.

Can you foliar spray during flowering?

Some products are made for it, on a set schedule. Optic Foliar Switch goes on at day 7 and day 17 of bloom, and Primordial True Blooms is labeled up to one week before finish. For any other spray, check its label before it goes on flowers.