Emerald Harvest Micro | 6gal

Calcium, Magnesium, and Sulfur Component of the Three-Part System, 6gal

A base nutrient built around nitrogen, phosphorus, and potassium alone leaves out calcium, magnesium, and sulfur, three secondary macronutrients plants still need in meaningful amounts through the growth cycle. Emerald Harvest Micro 5-0-1 is the component of the brand's three-part Grow, Micro, Bloom system built specifically to supply those secondary macronutrients, used alongside Grow and Bloom rather than as a standalone feed.

The 6gal size fits larger home operations or small commercial growers running the three-part system across a bigger crop.

Key Features & Benefits

• Secondary macronutrient supply — delivers calcium, magnesium, and sulfur alongside 5-0-1 NPK.
• Three-part system component — designed to run alongside Grow 2-1-6 and Bloom 0-5-4, not alone.
• Calcium content — supports cell wall development in growing tissue.
• Magnesium content — a core component of chlorophyll and an activator for several plant enzymes.
• Sulfur content — involved in protein synthesis and enzyme activity.

Who Should Use Emerald Harvest Micro

This component fits growers running Emerald Harvest's three-part Grow, Micro, Bloom system who need the calcium, magnesium, and sulfur portion of that program alongside the other two bottles.

About Emerald Harvest

Micro is the calcium, magnesium, and sulfur component of Emerald Harvest's original three-part base system, developed by the Santa Rosa, California company alongside Grow and Bloom since its 2015 founding.

Frequently Asked Questions

Can Micro be used without Grow and Bloom?

No, Micro is formulated as one component of the three-part system and is meant to be used alongside Grow 2-1-6 and Bloom 0-5-4 rather than on its own. Used alone, it would leave a plant short on the primary macronutrients the other two components supply.

What does the 5-0-1 ratio mean alongside the secondary nutrients?

The 5-0-1 ratio contributes 5% nitrogen and 1% potassium, with no phosphorus, while the product's calcium, magnesium, and sulfur content rounds out the secondary macronutrient profile. Grow and Bloom supply the phosphorus and additional potassium the full three-part program needs.

Why does this system use three bottles instead of two?

Splitting nutrients across three components, rather than the two used in Cali Pro, is a different tradeoff that groups primary and secondary macronutrients separately. Growers who prefer that separation, or who started with this system before Cali Pro existed, tend to stick with the three-part format.

How do I mix Grow, Micro, and Bloom together?

Add each component to your reservoir water separately, following the Emerald Harvest label feeding schedule for rates, rather than combining them at full concentration first. Adjust rates into a custom program once you're familiar with how your plants respond.

Is Micro compatible with soil growing as well as hydroponics?

Yes, it's formulated to work across soil, coco coir, and hydroponic growing media as part of the three-part system. Check the feed chart for any media-specific adjustments.