Frequently Asked Questions

For best results, apply every 1 to 2 weeks during the active growing season (spring through fall). Consistency is key when feeding soil biology with organic inputs.

The standard dilution is 1 oz (2 tablespoons) of Neptune's Harvest per 1 gallon of water. For seedlings and delicate houseplants, use half the amount (1 tablespoon per gallon).

Yes! Foliar feeding is highly recommended, especially with our Liquid Seaweed. Plants can absorb nutrients through their leaves up to 20x more efficiently than through the roots. Apply early morning or late afternoon.

Yes, the majority of our products are OMRI Listed, meaning they have been independently reviewed and approved for use in certified organic production. Look for the OMRI seal on product labels.

OMRI (Organic Materials Review Institute) is an independent nonprofit that reviews products against organic standards. An OMRI Listed product has been approved for use in organic gardening and farming under the National Organic Program (NOP).

Fish emulsion is cooked at high temperatures to extract oils, which destroys many beneficial enzymes, proteins, and vitamins. Our fish hydrolysate (cold-processed) retains all of these natural nutrients — including fish oils — making it vastly superior for soil biology.

Because it's cold-processed (not boiled or rotting), it has a mild, earthy, ocean-like scent when first applied. The odor dissipates quickly — usually within 24 hours — as soil microbes break it down. It's far less offensive than traditional fish emulsions.

No. Because Neptune's Harvest is 100% organic and cold-processed, it will not burn your plants' roots or leaves even if slightly over-applied, unlike synthetic chemical fertilizers.

Yes! We offer free standard shipping on all orders over $50 within the contiguous United States (lower 48 states).

Currently, we ship within the United States only for online orders. For international bulk orders, please contact our commercial sales team.