Neptune's Harvest
Neptune's Harvest offers 2 products on RevWix across Garden & Outdoors, with an average ethics score of 86.5/10 and recurring certifications including USDA Organic, Non-GMO Project Verified, OMRI Listed.
Standards & certifications
Verified credentials appearing across Neptune's Harvest's product range.
Ethics breakdown
Average scores across our scoring pillars.
- Sourcing94/10
- Environment90/10
- Transparency90/10
- Labor85/10
- Animal Welfare80/10
Categories covered
Where Neptune's Harvest shows up across our directory.
- Garden & Outdoors2
What reviewers highlight
Strengths mentioned most often across Neptune's Harvest's products.
- ✓Boosts plant resilience to heat and drought
- ✓Highly concentrated formula lasts a long time
- ✓Safe for use around pets and children when used as directed
- ✓USDA Organic and OMRI Listed with transparent sourcing
- ✓Improves soil microbiome and long-term plant health
- ✓Versatile for soil drench, foliar spray, and hydroponics
Sustainability commitments
"Maintains a zero-waste production cycle by utilizing fish scraps from the North Atlantic fishing industry."
"Fish are sourced from US-managed, sustainable Atlantic fisheries; kelp is hand-harvested from Norwegian waters using methods that allow regrowth. Manufacturing is cold-processed to minimize energy use. The 1-gallon HDPE jug is #2 recyclable (BPA-free)."
Neptune's Harvest scores & reviews
Product scorecard
| # | Product | Ethics | Shopper rating | Price |
|---|---|---|---|---|
| 1 | Organic Seaweed & Fish Emulsion Fertilizer | 88 | 4.7(8,450) | $24.99 |
| 2 | Neptune's Harvest Fish & Seaweed Liquid Fertilizer (2-3-1) - 1 Gallon | 85 | 4.7(7,045) | $54.99 |
Products from Neptune's Harvest
A high-performance organic liquid fertilizer concentrate derived from ethically harvested ocean kelp and fish waste. Perfect for all-purpose gardening and soil enrichment without synthetic chemicals.
What is this product and who is it best for? Neptune's Harvest Fish & Seaweed Liquid Fertilizer is an organic, OMRI-listed liquid plant food blended from North Atlantic fish and seaweed, ideal for organic gardeners and houseplant enthusiasts seeking an ethical, sustainable fertilizer that builds soil health and yields robust growth without synthetic chemicals.
How to read Neptune's Harvest's ethics scores
Each Neptune's Harvest product on this page carries a 0–100 score built from four checkable inputs: active third-party certifications, disclosed ingredients or materials, published supply-chain information, and the brand's watchdog record. Nothing here is based on Neptune's Harvest's own marketing language.
The spread matters as much as the top score. If Neptune's Harvest's highest and lowest products sit far apart, verification is being applied to some lines and not others — common when a company certifies a flagship range and leaves the rest undocumented. A narrow spread, even at a moderate average, usually signals a consistent policy.
Scores can move without any editorial change, because certification status is re-checked as pages refresh. A lapsed certificate, a new audit or a recall notice will all show up in the product's certification and notes sections.
Questions worth asking before buying Neptune's Harvest
Start with ownership: a parent company's testing or sourcing policy can change what a claim on the packaging actually covers. Then check scope — a certification often applies to one fibre, facility or ingredient rather than the whole product.
Finally, compare within the category rather than against Neptune's Harvest's own range. A mid-scoring product can still be the strongest verified option at its price, and a high-scoring one can be beaten by a cheaper certified alternative.
What each score input covers
| Input | What we check | Why it matters |
|---|---|---|
| Certifications | Active listings in public registers, with scope and expiry | Only externally audited claims can be revoked |
| Ingredients & materials | Full disclosure, hazard flags, recycled or organic content | Comparable without trusting brand narrative |
| Transparency | Named suppliers, factories or audit summaries | Shows whether claims survive scrutiny |
| Record | Recalls, regulator rulings and greenwashing findings | Best short-term signal of quality control |
Buying Neptune's Harvest with confidence
- Verify the mark, not the adjectiveSearch the certifier's register for the exact product line.
- Check the parent companyOwnership changes what cruelty-free or organic claims cover.
- Compare in-categoryThe same score means different things across categories.
- Read open notes firstAn unresolved recall outweighs a few score points.
Frequently asked
Is Neptune's Harvest an ethical brand?+
Neptune's Harvest's standing here is the average of its scored products, built only from verifiable inputs: active certifications, disclosed ingredients or materials, published supply-chain data and its recall or regulator record. Where a claim cannot be checked in a public register, it earns nothing.
Is Neptune's Harvest certified by third parties?+
Any certification we could confirm appears on the individual product cards above. Marks shown are matched to the certifier's own register; self-declared logos and internal awards are not counted.
Why do Neptune's Harvest products have different scores?+
Scores are per product, not per brand. Differences usually come from certification scope, ingredient or material disclosure, and packaging — a certified flagship can sit far above an undocumented line from the same company.
Are there better alternatives to Neptune's Harvest?+
Compare within the category rather than the brand: category rankings list the highest-scoring verified options at each price level, so you can see whether a cheaper certified alternative beats the Neptune's Harvest product you were considering.