13 Amazing Liquid Kelp Fertilizer for 2024

(Many of the links in this article redirect to a specific reviewed product. Your purchase of these products through affiliate links helps to generate commission for Storables.com, at no extra cost. Learn more)

Are you a gardening enthusiast looking to give your plants the best care possible? Look no further! In this article, we will explore the top 13 liquid kelp fertilizers available in 2023 that will surely revolutionize your gardening experience. Liquid kelp fertilizers have gained significant popularity among gardeners due to their numerous benefits for plant growth and overall health. Whether you have indoor plants or a sprawling garden, these amazing liquid kelp fertilizers are the perfect solution to enhance your plant's vitality and yield. Stick around to discover the most effective and reliable liquid kelp fertilizers for 2023!

Concentrated Organic Liquid Kelp & Seaweed Extract – Quart Size

Check Latest Price

This product has a rating of A.*What does this rating mean?

Overall Score: 9.3/10

The Organic Liquid Kelp Fertilizer is a fully organic seaweed and kelp blend that aids in every stage of plant growth. With a unique processing technique, this fertilizer provides all the benefits of natural kelp enzymes and hormones without the fibrous pulp found in other kelp products. It is simple and safe to use for all plants and can be added to every watering. This kelp fertilizer is formulated and made in the USA and is designed by botanists and plant chemists. It comes in a quart-sized bottle, which makes 180 gallons of fertilizer.

Overall, the Organic Liquid Kelp Fertilizer is an excellent choice for any plant enthusiast. It provides the benefits of natural enzymes and hormones without the non-nutritious fibrous pulp found in other kelp products. With its simple and safe application, this fertilizer is suitable for all plants and lawns. It is formulated and made in the USA using high-quality ingredients and manufacturing methods. While there may be some drawbacks, such as incorrect dosage instructions and a recent price increase, the positive effects on plant growth and health make it a clear winner. Give your plants the boost they need with this organic liquid kelp fertilizer.

Kelp Green Organic Plant Food

Check Latest Price

This product has a rating of A.*What does this rating mean?

Overall Score: 9.2/10

The Kelp Green Liquid Organic Plant Food is an all-natural organic fertilizer derived from seaweed and oceanic fish. It promotes plant growth, resulting in greener leaves and lawns. The quart-size bottle provides enough fertilizer for multiple applications. The product is highly effective and easy to use. While it has a strong odor, it is not scented, which is a positive for those looking for a pure, natural fertilizer. Customers have reported excellent results with this product, with plants growing taller and stronger within weeks of application. It is also beneficial for the roots of new trees, shrubs, and grass. Despite the smell, this liquid plant food is highly recommended for anyone who wants to enhance the health and appearance of their plants.

For an all-natural organic fertilizer that delivers impressive results, the Kelp Green Liquid Organic Plant Food is an excellent choice. While the odor may be off-putting to some, the benefits it brings to the health and growth of plants outweigh the smell. It is easy to use and provides noticeable improvements to both leaves and root systems. Whether you are a seasoned gardener or just starting out, this fertilizer will help you achieve excellent results. Just be prepared for the distinct fragrance during application. Overall, the Kelp Green Liquid Organic Plant Food receives a high recommendation for its effectiveness and ability to promote lush, green plant life.

Sea-K Seaweed and Kelp Fertilizer Supplement

Check Latest Price

This product has a rating of A.*What does this rating mean?

Overall Score: 8.5/10

Sea-K for Plants Seaweed and Kelp Fertilizer Supplement Concentrated Extract Powder Nutrient is a highly effective and natural way to improve the health and growth of your plants. Made from the extract of kelp seaweed, this fertilizer supplement helps plants resist stress, promotes fruit and flower expansion and coloring, and increases Brix levels. With a rich concentration of over 70 vitamins, minerals, and enzymes, it benefits both your plants and revitalizes your soil media. The 100% water soluble powder form makes it suitable for any growing system or media, and the 200g ultra-concentrated bag size can make up to 400 gallons of fertilizer. With high levels of potassium, magnesium, calcium, and other essential nutrients, Sea-K promotes strong growth, root viability, germination, and high yields. It is an essential nutrient for your plants that shouldn't be missed.

Sea-K for Plants Seaweed and Kelp Fertilizer Supplement Concentrated Extract Powder Nutrient is a highly recommended product for any garden or indoor plants. Its natural and potent formula provides numerous benefits to your plants, including improved stress resistance, enhanced growth and color, and increased yields. The concentrated powder form makes it easy to use in any growing system or media, and the high potassium content ensures vibrant and healthy plants. While it may trigger asthma attacks if used irresponsibly, following the instructions carefully will prevent any issues. Overall, Sea-K is an essential nutrient that your plants will love and thrive on.

Organic Kelp Fertilizer – Liquid Kelp Concentrate for Gardens

Check Latest Price

This product has a rating of A.*What does this rating mean?

Overall Score: 8/10

The Organic Kelp Fertilizer by GS Plant Foods is a natural and organic seaweed extract fertilizer for plants. It is OMRI listed and provides a range of benefits for plant health and nutrition. Made from the finest seaweed plant Ascophyllum Nodosum, this 'miracle' plant food improves plant tolerance to various conditions and enhances overall plant nutrition. It is easy to use and can be applied in all growth stages. Trusted and reliable, GS Plant Foods is dedicated to delivering the highest quality organic seaweed fertilizer products for amazing results in your garden.

The Organic Kelp Fertilizer by GS Plant Foods is a fantastic organic seaweed extract fertilizer that provides numerous benefits for plant health and nutrition. With its OMRI listing and high-quality formulation, it is a reliable choice for both home gardeners and commercial use. The easy application makes it convenient for all growth stages, and the results are truly impressive with improved plant nutrition and tolerance. While some users may find it a bit pricey, the overall value and consistent results make it a worthwhile investment. Say goodbye to nutrient loss and harmful chemicals by choosing this reliable and sustainable kelp fertilizer for your garden.

Marine Magic Seaweed Extract for Plants

Check Latest Price

This product has a rating of A.*What does this rating mean?

Overall Score: 9/10

Marine Magic Seaweed Extract is a 100% organic soluble seaweed fertilizer that promotes healthy plant growth and development. It improves seed germination, increases root development, and enhances the bloom set, bud formation, and size of flowers and fruits. This seaweed extract also extends the shelf life of fruits, vegetables, and flowers by boosting their vigor and resilience against extreme weather conditions. With its all-natural formulation, Marine Magic Seaweed Extract is non-GMO, vegan, and odor-free. It is a convenient and eco-friendly solution without the need for additional storage space or plastic packaging. Note: Specifications are not available.

Marine Magic Seaweed Extract is an excellent organic fertilizer for promoting healthy plant growth. It is easy to use, has no unpleasant odor, and delivers noticeable results. While the concentrated formula ensures a little goes a long way, users must dilute it carefully to avoid overpowering plants. Additionally, this product should be used as a supplement to a comprehensive fertility program, as it may not provide sufficient plant food on its own. Overall, Marine Magic Seaweed Extract is a cost-effective and eco-friendly solution for any gardener looking to enhance the health and vitality of their plants.

Down to Earth Liquid Fish & Kelp 2-4-1, 1 Quart

Check Latest Price

This product has a rating of A.*What does this rating mean?

Overall Score: 8/10

Down to Earth Liquid Fish & Kelp 2-4-1, 1 Quart is a highly effective fertilizer suited for all types of edible, ornamental, and indoor plants. It is listed by the Organic Materials Review Institute (OMRI) for use in organic production, ensuring its quality and safety. This liquid fertilizer provides the perfect combination of fish and kelp ingredients to promote healthy plant growth and flowering. Customers have reported impressive results, with plants growing taller and gardens turning into lush jungles. The product is easy to use, and its tomato/veg balance is highly praised. However, it does have a strong fishy smell and may attract flies if not properly watered into the soil.

Overall, Down to Earth Liquid Fish & Kelp 2-4-1, 1 Quart is an excellent choice for those seeking a powerful organic fertilizer. Its performance in boosting plant growth and flowering is superior to other products on the market. While the smell may be unpleasant, the results are worth it. The OMRI listing adds an extra layer of trust, and the ease of use makes it suitable for both experienced and novice gardeners. Whether you have a backyard garden or indoor plants, this fertilizer will help you achieve healthy and thriving vegetation. With a solid rating of 8, it’s definitely a staple to consider for your garden supplies.

Organic Fish and Kelp Blend

Check Latest Price

This product has a rating of A.*What does this rating mean?

Overall Score: 8.7/10

The Organic Fish and Kelp Blend by GS Plant Foods is a high-quality liquid fertilizer that promotes optimal plant growth and health. It is made from all-natural fish and kelp extracts, which are organic and safe for both home and commercial use. This blend not only nourishes plants but also helps rebuild the soil, resulting in higher production yields. It can be used on a wide range of plants, including vegetables, flowers, trees, and lawns, without the worry of harmful runoff. The easy-to-apply formula delivers great results, ensuring healthier crops and overall plant well-being. With its trusted and reliable quality, GS Plant Foods provides customers with a cost-efficient and sustainable option for their gardening needs.

The Organic Fish and Kelp Blend by GS Plant Foods is a highly effective liquid fertilizer that delivers exceptional results. Its organic and all-natural formula ensures optimal plant growth and health, making it a reliable choice for both home gardeners and commercial users. While it does have a strong fishy smell, the benefits of using this blend outweigh the temporary odor. The fertilizer is easy to apply and works well on a variety of plants, from vegetables to trees and lawns. Overall, this product provides a sustainable and cost-efficient solution for achieving healthier crops and vibrant plants.

Concentrated Liquid Kelp Supplement | Blue Planet Nutrients

Check Latest Price

This product has a rating of A.*What does this rating mean?

Overall Score: 8/10

Blue Planet Nutrients' Liquid Seaweed for Plants is a concentrated liquid kelp supplement designed to benefit all varieties of plants. Derived from organic Ascophyllum Nodosum Seaweed, this product contains carbohydrates, micro-nutrients, and organic matter. It can be used in different types of gardens and growing media, including soil, hydroponic, coco coir, rockwool, clay pellets, and aeroponic gardens. The Liquid Kelp supplement promotes overall plant vitality and has received positive reviews from customers. While it lacks a measuring cup and may cause plant burn if used improperly, users appreciate its effectiveness, near odorlessness, and ease of application. With a fair price point, this product can help enhance the health and productivity of your plants.

Blue Planet Nutrients’ Liquid Seaweed for Plants is a trusted and effective product to boost the health and vitality of your plants. Its organic composition and versatile use make it suitable for various types of gardens and growing media. Although it may lack some additional features like a measuring cup and a better seal on the bottle, its benefits, such as reviving plants and promoting growth, outweigh these minor drawbacks. If you’re looking for a reliable and reasonably priced liquid kelp supplement, this is definitely worth considering to enhance the growth of your garden.

Liquid Seaweed Concentrate for Plants

Check Latest Price

This product has a rating of A.*What does this rating mean?

Overall Score: 8.5/10

Blue Planet Nutrients offers the Liquid Seaweed for Plants, a concentrated liquid kelp supplement derived from organic Ascophyllum Nodosum Seaweed. Packed with carbohydrates, micro-nutrients, and organic matter, this product provides overall plant vitality and is suitable for all varieties of plants, including citrus, fruit trees, vegetables, herbs, houseplants, succulents, flowers, and shrubs. It is formulated to work effectively in various types of gardens and growing media, such as soil, hydroponic, coco coir, rockwool, clay pellets, and aeroponic gardens. Blue Planet Nutrients is a trusted brand dedicated to ensuring your gardening success. With a customer rating of 4.7/5, this liquid seaweed concentrate has received positive feedback for its noticeable results and affordability.

The Liquid Seaweed for Plants by Blue Planet Nutrients is an exceptional concentrated liquid kelp supplement. With its powerful blend of organic seaweed derived from Ascophyllum Nodosum, it effectively enhances the vitality of all types of plants and gardens. The product has received glowing reviews from customers, highlighting its noticeable results, affordability, and versatility in various gardening setups. While there have been some issues reported with the product arriving damaged and customer service, the majority of users have had a positive experience. If you’re looking for a reliable and trusted solution to boost the health and growth of your plants, this liquid seaweed concentrate is worth considering.

Indian River Organics Fish & Kelp Blend Fish Fertilizer

Check Latest Price

This product has a rating of A.*What does this rating mean?

Overall Score: 8/10

The Indian River Organics Fish & Kelp Blend Fish Fertilizer is a powerful organic fertilizer that combines the benefits of fish and seaweed to provide your plants with all the nutrients they need. This liquid fertilizer is packed with amino acids and micro nutrients that promote healthier and more resistant plants. The addition of North Atlantic kelp enhances the plant supplement, providing immediate benefits to your plants. With easy application instructions, you can use this fertilizer on your lawn, fruits, vegetables, flowers, and trees. It is a trusted and reliable product that consistently yields amazing results in your garden. Give your plants the nourishment they deserve with this effective fish and kelp fertilizer.

The Indian River Organics Fish & Kelp Blend Fish Fertilizer is a highly effective organic fertilizer that provides outstanding results for all kinds of plants. It combines the benefits of fish and seaweed to promote healthier, more resistant plants that can withstand various environmental conditions. With easy application instructions and a trusted brand reputation, this fertilizer is a reliable choice for any gardener. However, the strong fish smell and potential attractant for animals should be taken into consideration. Overall, this product delivers on its promises and is a great investment for those looking to improve the health of their plants.

Liquid Seaweed Concentrate: Super Plant Food

Check Latest Price

This product has a rating of A.*What does this rating mean?

Overall Score: 8/10

The Kelp-tivate Liquid Seaweed Concentrate is a powerful plant food that helps boost growth and yield. Made with 100% soluble kelp, this concentrate provides high levels of potassium for big blooms and more produce. It is ideal for foliar spray and is a great seedling starter. The Kelp-tivate Liquid Seaweed Concentrate is known to be effective in promoting healthy plants and can even help slow down bacterial leaf spot. Despite its small bottle size, it is a highly concentrated formula that goes a long way. Overall, this product is easy to use and has received positive reviews for its effectiveness in improving germination rate and plant health.

The Kelp-tivate Liquid Seaweed Concentrate is a fantastic solution for plant enthusiasts who want to enhance the growth and yield of their plants. Its high concentrate of soluble kelp provides the necessary nutrients for big blooms and increased produce. The product has received positive reviews for its effectiveness in promoting healthy plants and improving germination rates. While the small bottle size may seem limiting, the highly concentrated formula ensures that a little goes a long way. However, there have been occasional complaints about bottles arriving open and spilled contents. Overall, the Kelp-tivate Liquid Seaweed Concentrate is an easy-to-use, reliable plant food that can help any gardener achieve impressive results.

Vine Vitality Fish & Kelp Liquid Fertilizer

Check Latest Price

This product has a rating of A.*What does this rating mean?

Overall Score: 8/10

Boost the growth of your plants with the Vine Vitality Nutrient Rich Fish & Kelp Liquid Fertilizer Concentrate. This organic fertilizer is OMRI Listed, ensuring it meets the standards of the Organic Materials Review Institute. It is made from a hydrolyzed fish and kelp formula, providing essential nutrients to your plants. The bottle can make up to 8 gallons of fertilizer solution, depending on the application. With no harmful chemicals, it is safe to use around children and pets. However, be aware that the bottle size is small at 8oz. Overall, customers have seen positive results, such as improved growth in grape vines and tomato plants.

The Vine Vitality Nutrient Rich Fish & Kelp Liquid Fertilizer Concentrate is a reliable choice for organic gardening. It provides essential nutrients to your plants, helping them grow stronger and healthier. The concentrated formula offers great value for money, as it can make up to 8 gallons of fertilizer solution. However, the small bottle size may be a downside for some users. Overall, customers are satisfied with the results, witnessing improved growth in various plants. Whether you’re a beginner or an experienced gardener, this fertilizer can help enhance the vitality of your plants.

Vine Vitality All Purpose Fish & Kelp Liquid Fertilizer Concentrate, 32oz.

Check Latest Price

This product has a rating of A.*What does this rating mean?

Overall Score: 9/10

The Vine Vitality All Purpose Fish & Kelp Liquid Fertilizer Concentrate is a must-have for any gardener looking for healthy, responsible, and abundant growing. This fertilizer helps increase your harvest, improve the quality of your produce, and enhance the blooms of your plants. It is safe to use around children and pets as it contains no harmful chemicals. With a N-P-K ratio of 4.0-4.0-0.5, it provides the essential nutrients necessary for optimal plant growth. One bottle makes up to 32 gallons of fertilizer, depending on the application. Experience the benefits of this amazing liquid fertilizer and watch your plants thrive!

The Vine Vitality All Purpose Fish & Kelp Liquid Fertilizer Concentrate is an excellent choice for gardeners looking to enhance their plant growth and yield. It is safe to use around children and pets, making it a reliable option for any household. The fertilizer’s ability to improve bloom quality and produce a bountiful harvest is highly praised by customers. The pleasant surprise of faster plant growth and healthier plants adds to its appeal. However, the product does have a strong odor and lacks detailed specifications. Overall, this liquid fertilizer concentrates the power of fish and kelp to create a winning formula for garden success.

Buyer's Guide: Liquid Kelp Fertilizer

*Seaweed for your plants? It's not as strange as it sounds! Liquid kelp fertilizer is a natural and eco-friendly alternative to traditional chemical fertilizers. Packed with essential nutrients and minerals, it promotes healthy growth and enhances the overall wellbeing of your beloved plants. Before diving into the ocean of options, let's navigate through this buyer's guide to help you make an informed decision.*

Benefits of Liquid Kelp Fertilizer

• Increases plant resistance: Boosts the natural defense mechanisms of your plants, making them more resistant to diseases, pests, and environmental stressors.
• Promotes nutrient absorption: Enhances the nutrient absorption process in plants, maximizing their ability to extract essential elements from the soil.
• Stimulates strong root development: Nurtures robust roots, providing a solid foundation for healthier and more vigorous plants.
• Enhances bloom and fruit production: Encourages abundant flowers and fruit, resulting in a more bountiful harvest or vibrant garden.
• Supports soil health: Improves soil structure and fertility, promoting a healthy and thriving ecosystem for your plants.

Factors to Consider before Purchasing

1. Organic certification: Look for products with USDA organic certification to ensure the fertilizer is derived from sustainable and organic sources.
2. Concentration and dilution: Check the recommended dilution ratio on the packaging. Some fertilizers may require dilution before application to avoid overfeeding and potential damage to plants.
3. Application methods: Consider the preferred application method for your gardening style. Liquid kelp fertilizers are available in spray, foliar feed, or root drench formats.
4. Plant compatibility: Determine if the fertilizer is suitable for the specific plants you are growing. Some liquid kelp fertilizers are formulated for specific plant types, such as vegetables, flowers, or lawns.
5. Brand reputation: Research and consider reputable brands and customer reviews to ensure the product delivers consistent results.
6. Price and quantity: Compare prices and evaluate the quantity of product provided. Determine if the cost aligns with your budget and gardening needs.

Tips for Using Liquid Kelp Fertilizer Effectively

• Follow packaging instructions: Always read and adhere to the recommended application instructions provided by the manufacturer.
• Timing is key: Apply liquid kelp fertilizer during the plant's active growing period for optimal nutrient uptake and utilization.
• Avoid over-application: More is not always better! Apply the fertilizer sparingly and avoid excessive use to prevent nutrient imbalances or potential plant damage.
• Monitor plant response: Observe your plants for any signs of improved growth, vibrancy, or increased yield. Adjust the frequency or amount of fertilizer applied based on plant reaction.
• Combine with other fertilizers: Liquid kelp fertilizer can be complemented with other organic fertilizers to provide a well-rounded nutrient profile.