Bring the power of the ocean to your garden with Neptune's Harvest, a premium line of organic liquid fertilizers crafted from sustainably sourced North Atlantic fish and seaweed. Their unique cold-process method preserves the essential amino acids, vitamins, and trace minerals often lost during traditional manufacturing.
These nutrient-dense formulas promote explosive root development, vigorous growth, and bountiful yields. Whether you are cultivating rare houseplants or heavy-feeding crops, Neptune's Harvest delivers clean, ocean-derived nutrition to help your garden thrive.
All Neptune's Harvest products in our catalogue are OMRI Listed and fully organic.
Save $4.39

Neptune's Harvest
Neptune's Harvest Fish-Seaweed Fertilizer for Rose & Flowers (2-6-4)
Sale priceFrom $39.56
Regular price$43.95
In stockSave $2.99

Neptune's Harvest
Neptune's Harvest Hydrolyzed Fish Fertilizer (2-4-1)
Sale priceFrom $26.96
Regular price$29.95
In stockSave $4.39

Neptune's Harvest
Neptune's Harvest Fish-Seaweed Fertilizer for Tomatoes & Vegetables (2-4-2)
Sale priceFrom $39.56
Regular price$43.95
In stockSave $3.79

Neptune's Harvest
Neptune's Harvest Hydrolyzed Fish & Seaweed Fertilizer (2-3-1)
Sale priceFrom $34.16
Regular price$37.95
In stockSave $2.99
Neptune's Harvest
Neptune's Harvest Crab and Lobster Shell - 1.8kg
Sale price$26.96
Regular price$29.95
In stockSave $3.19

Neptune's Harvest
Neptune's Harvest Seaweed Plant Food (0-0-1)
Sale priceFrom $28.76
Regular price$31.95
In stock