FOR GARDNERS
Build a “living soil engine” for bigger blooms, healthier houseplants, and more robust vegetables. Made from fresh-caught North Atlantic fish right on the docks of Gloucester, MA, our cold-processed fertilizers give you professional-grade results right in your backyard.
Shop Our Best-Selling Organic Fertilizers
The Core Four essentials for your garden. From our classic hydrolyzed fish fertilizer to our specialized fish and seaweed blends, we have the perfect organic fertilizer for every stage of plant growth. 🔥
No Clogging
Thanks to our rigorous multi-step screening process, our liquid fertilizers work perfectly in fine-mist foliar sprayers and watering cans without sediment buildup.
Less Odor
Because we process fresh fish same-day at the dock, the putrid odors of decomposition are avoided. The mild, earthy scent dissipates rapidly after application.
Zero Waste
We utilize 100% of the fish leftover from filleting, turning an environmental hazard into a biological benefit.
Best Sellers for Home Gardeners
Our most popular Neptune’s Harvest products for healthier soil, stronger plants, bigger blooms, and productive gardens.
Simple Application for Maximum Results
Professional-grade inputs shouldn’t be complicated to use. For our liquid fertilizers, simply follow this basic rule:
Dilution Rate
Mix 1 oz (2 tablespoons) of fertilizer per gallon of water.
Soil Drench
Apply every 1–2 weeks to establish a robust microbial colony in your soil.
Foliar Spray
Spray leaves directly in the early morning or late evening for maximum nutrient uptake and to avoid leaf scorch.
Trusted by Champion Growers & OMRI Listed
For environmentally conscious home gardeners, peace of mind is essential. That’s why our core products are OMRI Listed for use in organic production, assuring that our ingredients and processes comply with strict organic standards.
Start Cultivating Your
Legacy Today
Feeding your plants is a seasonal task; feeding your soil is a legacy. Choose the biological advantage of Neptune’s Harvest.
Find a Retailer Near You
Find Neptune’s Harvest products at a retailer near you.