Neptune's Harvest Fish & Seaweed Liquid Fertilizer — 36 oz Organic 2-3-1 Concentrate for Vegetables & Flowers

Neptune's Harvest Fish & Seaweed Liquid Fertilizer (2-3-1) is an organic, ready-to-mix plant food combining hydrolyzed fish and seaweed to support balanced growth for vegetables, flowers, trees, lawns and indoor plants.

This concentrated 36 oz bottle blends 75% fish and 25% seaweed into a liquid fertilizer that delivers usable nutrients immediately and helps build healthier soil over time. Designed for gardeners who prefer organic inputs, the formula is OMRI Listed and made to apply as a soil drench or foliar feed. It’s suitable for transplants and established plants and can be used across containers, raised beds, lawns and landscape planting.

How quickly will I see results after feeding with Neptune's Harvest?

Because the product uses hydrolyzed fish and seaweed, plants can access nutrients faster than with many granular amendments. You may notice more vigorous leaf and stem growth within one to three weeks, while blooms and fruit quality improve over successive feedings. Long-term soil improvements appear more gradually as organic matter and microbial activity increase.

• Fast-acting liquid formula for quicker nutrient uptake
• Visible vegetative response often in 1–3 weeks
• Soil structure and microbial benefits accumulate over months

What dilution and schedule should I use for different plants?

This fertilizer is easy to measure and adapt. Indoor plants and container-grown herbs use a lighter mix and weekly feedings; outdoor vegetables and flowering beds receive a stronger dilution every one to two weeks; and transplants benefit from gentle, frequent applications to reduce shock.

• Indoor plants: 1 tablespoon per gallon of water, feed weekly
• Outdoor plants: 1/8 cup per gallon, apply every 1–2 weeks
• Transplants: use as a mild drench or foliar spray to encourage establishment

What benefits does the fish-and-seaweed combination provide to soil and plants?

Fish delivers nitrogen and amino acids for growth, while seaweed supplies trace minerals, natural growth stimulants and compounds that support stress tolerance. Repeated applications help build organic matter, stimulate beneficial microbes and improve moisture retention and drainage as soil aggregates form. These effects work together to promote healthier root systems and better overall plant performance.

• Feeds beneficial bacteria and microbes in the root zone
• Improves soil structure, moisture retention and drainage
• Supplies macro- and micronutrients plus organic matter

Is this safe for use around children, pets and edibles?

Neptune's Harvest is formulated as an organic plant food and is labeled for edible gardens, ornamentals and lawn care. When mixed and applied according to directions, it is designed for routine use on vegetables, fruits and herbs; standard safety practices — like storing product away from children and rinsing hands after handling — are recommended. The product’s OMRI listing indicates it meets organic input standards for many gardening systems.

• OMRI Listed for organic gardening systems
• Intended for use on edibles when applied per label instructions
• Store securely and follow basic safety and storage guidelines

Who is this for: Neptune's Harvest Fish & Seaweed Liquid Fertilizer is aimed at home gardeners, small-scale growers and landscapers seeking an organic, easy-to-use liquid fertilizer. It suits people who want quicker nutrient availability than granular amendments, gardeners focused on edible quality and flavor, and anyone aiming to improve soil health while feeding a wide range of plants from container houseplants to backyard fruit trees.

Ingredients

Hydrolyzed Fish & Phosphoric Acid (Used as a stabilizer) and Seaweed & Potassium Hydroxide (Used as a processing aid)