10 bestOrganic Liquid Fertilizersof May 2026
112M consumers helped this year.
10% off
1
MARPHYL Organic Liquid Fertilizer – Indoor & Outdoor House Plant Fertilizer - All-Purpose Nutrient-Rich Plant Food - Soil Enhancer for Garden, Flowers, Vegetables, Succulents, Bamboo, Hydroponics
MARPHYL
9.7
5% off
2
Organic Liquid Fertilizer (500ml / 16.9oz)
EVERBLOOM GREEN
9.4
3
Neptune's Harvest HF136 Hydrolyzed Fish Fertilizer 2-4-1, 36 Ounce
Neptune's Harvest
9.1
4
Neptune's Harvest Fish & Seaweed Blend Fertilizer 2-3-1 36 Oz
Neptune's Harvest
8.8
5
AgroThrive Organic General Purpose Fertilizer (4-pack, 1 Gal)
AgroThrive
8.5
6
Neptune's Harvest TV136 Tomato & Veg Formula Fertilizer, 36 oz
Neptune's Harvest
8.2
7
Seaweed Fertilizer - Omri Organic Liquid Fertilizer for Seedlings (1 Gallon) - Liquid Kelp & Vegetable Growth Concentrate for Gardens, Lawns & Soil
GS Plant Foods
7.9
8
Atlantean Products Ecological Seaweed Based Plant Food - Liquid 1L Bottle, 3% Calcium, 1L at 1:100 Ratio = 5L at 1:20 Ratio
Atlantean Natural Products
7.6
9
FoxFarm FX14006 1-Quart Grow Big Liquid Concentrate 6-4-4
FoxFarm
7.3
10
Neptune's Harvest Liquid Seaweed Plant Food 0-0-1 1qt
Neptune's Harvest
7.0
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