Are you trying to find kelp for garden among various brands on the market but aren’t sure where to begin? To assist you in finding the right one, we’ve put together a list of the 7 best to help you pick the perfect one!
We investigated and evaluated a number of the top-selling kelp for garden on the market in order to create our list of the best. Making a decision among the many options available is never simple. There are an infinite number of models available, each with a distinct price. And as you’ll find out, the best options aren’t usually the ones you imagine! This comparison is rich and relevant because of the numerous factors that were employed. You will find products featured in this ranking not only based on their pricing but also on their features and other customers reviews. To write this review, we completed 13 hours of research and did 35 kelp for garden tests. You won’t need to pick products at random any more. If you’re unsure of what to look for, browse our list and consult the buying guide!
An overview of our top picks
Table of contents
The best kelp for garden you can buy today
- OMRI ORGANIC LISTED SEAWEED & KELP FERTILIZER: Liquid Kelp is a natural plant food that provides a range of benefits for plant health and nutrition. OMRI listed for organic use, GS Plant Foods Liquid Seaweed Fertilizer is a completely natural, seaweed extract fertilizer for plants. Our liquid seaweed will optimize soil conditions for greater root mass and improve nutrient uptake. It can be applied without concern for harmful chemicals or nutrient loss to the environment.
- ONE OF NATURE’S ‘MIRACLE’ PLANT FOODS: Made from the finest seaweed plant Ascophyllum Nodosum, this is one of nature’s miracle plant foods. Our seaweed extract improves your plant’s tolerance to excessive heat, wind, drought conditions and more. It increases and stabilizes chlorophyll in plants, which results in darker green leaves and increased sugar content in plants.
- IMPROVES OVERALL PLANT NUTRITION AT HOME OR COMMERCIALLY: GS Plant Foods sea kelp fertilizer is used extensively on a commercial basis, as well as at home for gardeners as an organic soil conditioner. Using GS Plant Foods seaweed plant fertilizer will lead to improved nutrient uptake and general plant wellbeing.
- EASY TO APPLY FOR NATURAL GREAT RESULTS: Apply liquid kelp to improve growing conditions in all growth stages. To use, simply mix 2 ounces of this liquid fertilizer concentrate organic into a gallon of water and apply. Each gallon of this mixture will then cover as much as 1,000 sq ft. Any sprayer will work, but for large areas, the hose end sprayer is easiest! This liquid kelp should be sprayed in the morning or late afternoon when temperatures are lower, and the leaves stoma are open.
- TRUSTED & RELIABLE: At GS Plant Foods, we understand that you are placing your trust in us to provide you with the highest quality organic seaweed fertilizer products available. We have 100% confidence in the quality of our products and continuously strive to deliver the best customer experience. Our products are organic, easy to use, cost efficient, sustainable, and yield consistent & amazing results in your garden, no matter what you're growing or what medium in which your plants are growing.
- FULLY ORGANIC SEAWEED AND KELP: A seven species blend of Ascophyllum Nodosum, Palmaria Palmata, Ecklonia Maxima, Laminaria Saccharina, Chlorella Vulgaris, Arthrospira Platensis, and Chondrus Crispus.
- EXTRACTED TO PROTECT NATURAL ENZYMES: Clean Kelp’s unique processing techniques give the cleanest possible kelp extract. Get all the benefits of natural kelp enzymes and hormones without the non-nutritious fibrous pulp that gives other kelps their thick, brackish appearance. You can see the difference.
- SIMPLE AND SAFE TO USE FOR ALL PLANTS: Add to every watering, it’s that easy. No risk of over application, plants love kelp. Clean Kelp aids in every stage of growth for root and stem health.
- FOR BOTH PLANTS AND LAWNS: Add Clean Kelp to all of your houseplants, vegetable garden, and your lawn for healthy green plants.
- FORMULATED AND MADE IN THE USA: Designed by botanists and plant chemists. Bloom City chooses only the highest quality ingredient sources and manufacturing methods to create the world’s best craft growing nutrient systems
- 100% Natural Kelp Meal Fertilizer - Kelp Bliss is a 100% natural garden fertilizer and soil amendment for plants that’s been sustainably harvested from sea kelp fresh from the ocean. Kelp meal fertilizer provides essential minerals, vitamins, and trace elements that improve nutrient uptake and encourage soil fertility in indoor plants and outdoor plants.
- Highly Renewable Plant Fertilizer - Kelp fertilizer is a natural source of essential nutrients like potassium, nitrogen, and phosphorus, providing a balanced boost of nutrition for indoor and outdoor gardens. Unlike other garden fertilizers, kelp meal fertilizer is made with no synthetic ingredients or additives. Plus, kelp meal is highly renewable, making it a great alternative to bone meal for plants.
- Improves Nutrient Absorption - Kelp meal is a perfect fertilizer for vegetables gardens, flower beds, lawns, orchids, indoor house plants, and as a soil amendment. Using kelp for plants helps maintain soil pH, keeping it within an optimal range for most plants. This makes it easier for plants to absorb vital nutrients, leading to improved nutrient uptake and efficiency.
- Excellent Water Retention - The organic matter in kelp meal improves the soil's water-holding capacity, building drought tolerance and helping plants stay hydrated during dry periods. Using kelp meal for plants helps reduce watering frequency, so you can conserve more water and contribute to more sustainable gardening practices.
- Improves Soil Structure & Fertility - Using kelp fertilizer for plants adds valuable organic material to the soil, improving soil fertility and supporting beneficial microbes. Over time, these soil microbes enhance nutrient availability and improve soil conditions for better overall plant mass and crop yields.
- Kelp Meal - Organic Natural Fertilizer
- Bulk 5 pound bag of Kelp Meal
- Kelp Meal contains Macro and Micro Nutrients for healthy gardens
- Sustainably harvested Kelp Meal is perfect for any plant
- Kelp Meal increases disease resistance and yields!
- Gardeners looking for an all-natural fertilizer may want to consider kelp meal. Its nutrients are essential for healthy plant growth. In addition, kelp meal also provides a source of micronutrients, such as iron and manganese. Kelp meal can be applied directly to garden beds or mixed into the soil prior to planting.
- Comes ready to use in a resealable package.
- Down To Earth Kelp Meal is a 4 pound box of all natural fertilizer with 1-0.1-2 formula and is listed by the Organic Materials Review Institute (OMRI) for use in organic production
- Kelp Meal is pure Ascophyllum nodosum seaweed from the clean, cold waters of the North Atlantic Ocean and is an ideal nutrient supplement for all types of vegetables, herbs, flowers and perennials
- Stimulate root development, stops transplant shock, boosts growth and alleviates stress caused by fluctuations in temperatures
- Hand-harvested, carefully dried and finely milled and is perfect for use in seeding mixes and potting soils, just use 1 - 2 pounds for 100 square feet of garden soil
- Provides a rich natural source of Potash, trace minerals, amino acids and natural plant hormones
- Down To Earth Kelp Meal is a half pound box of all natural fertilizer with 1-0.1-2 formula and is listed by the Organic Materials Review Institute (OMRI) for use in organic production
- Kelp Meal is pure Ascophyllum nodosum seaweed from the clean, cold waters of the North Atlantic Ocean and is an ideal nutrient supplement for all types of vegetables, herbs, flowers and perennials
- Stimulate root development, stops transplant shock, boosts growth and alleviates stress caused by fluctuations in temperatures
- Hand-harvested, carefully dried and finely milled and is perfect for use in seeding mixes and potting soils, just use 1 - 2 pounds for 100 square feet of garden soil
- Provides a rich natural source of Potash, trace minerals, amino acids and natural plant hormones
- Neptune's Harvest Organic Kelp Meal (1-0-2) is dried and ground Rock Weed (Ascophyllum Nod sum), which grows in the cold clean waters along the New England coast, and is known as the best marine plant available for agriculture today
- Full of trace Minerals, Carbohydrates and Amino Acids, helping create a strong root systems and makes a very healthy plant
- It should be tilled in the soil before planting or can be top dressed, incorporated into potting soils, seed beds and composting material
- Organic kelp meal is ascophyllum nodosum, which is widely recognized as one of the finest marine plants available for agriculture today
- It is a natural and cost effective enhancement to any soil fertilization and conditioning program
- OMRI ORGANIC LISTED FISH AND SEAWEED BLEND: GS Plant Foods all-natural fresh fish liquid fertilizer is a high quality organic product that gives excellent plant growth, rebuilds soil, and offers higher production yields. The kelp fertilizer can be applied to any type of plants, trees, lawns, flowers, vegetables and seeds without concern for waste.
- REBUILDS SOIL & IMPROVES PLANT COLOR: Our organic liquid fertilizer increases and stabilizes chlorophyll in plants, which results in darker green leaves and increased sugar content in plants. This seedling fertilizer relieves stress in plants caused by extreme weather conditions, increases plant vigor, greater resistance to heat, drought, and frost. Our organic liquid fertilizer for seedlings increases microorganisms in the soil and increases mineral uptake.
- OPTIMAL PLANT GROWTH & HEALTH AT HOME OR COMMERCIALLY: Used in low concentrations, liquid seaweed fertilizer acts as an efficacious growth promoter. GS Plant Foods fish seaweed fertilizer is used extensively on a commercial basis, as well as at home for gardeners as an organic soil conditioner. Reduce herbicide use by adding our liquid kelp extract, and yet maintain the same kill effectiveness. This fish fertilizer for vegetables will lead to healthier crop yields and general plant well being.
- EASY TO APPLY FOR NATURAL GREAT RESULTS: Apply liquid fish & kelp fertilizer to improve specific growth stages. For House Plants; use 1 tablespoon per gallon of water. Feed every two weeks and do not over water. For Outdoor Plants; Use 2 fl. Oz per gallon of water. Feed vegetables, flowers, trees and shrubs every 2-3 weeks. Apply until soil is saturated or as a foliar feed until leaves are wet, top and bottom. For Lawns; use 2 to 4 oz concentrate per gallon of water to cover 1,000 sq. ft.
- TRUSTED & RELIABLE: At GS Plant Foods, we understand that you are placing your trust in us to provide you with the highest quality products available. We have 100% confidence in the quality of our products and continuously strive to deliver the best customer experience. Our products are organic, easy to use, cost efficient, sustainable, and yield consistent & amazing results in your garden, no matter what you're growing or what medium in which your plants are growing.
- 🌿 MUST HAVE: When looking for the very best in natural gardening
- 🌿 NATURAL: Source of growth hormone that increases yields and minizines stress
- 🌿 DO IT RIGHT: Renewable resource that YOU can put back into Mother Nature
- 🌿 WHAT YOU GET: Clear package of 2 pounds of clean kelp meal
- 🌿 WE MAKE IT RIGHT: Not only can you rest assured that all of our products are covered by Amazon’s Return Policy, on the Farm, we will always stand by our products
- SEAWEED USABLE BY PLANTS: Derived from organic Ascophyllum Nodosum Seaweed which naturally contains carbohydrates, micro-nutrients, and organic matter!
- ALL VARIETIES OF PLANTS WILL BENEFIT: Such as citrus, fruit trees, garden vegetables and herbs, houseplants, succulents and cacti, flowers, shrubs, and so much more!
- FORMULATED FOR ALL TYPES OF GARDENS/GROWING MEDIA: Can be used in soil, hydroponic, coco coir, rockwool, clay pellets, aeroponic gardens etc.
- THE POWER OF SEAWEED IN A BOTTLE: Our Liquid Kelp supplement helps overall plant vitality for all varieties of plants growing in any type of garden!
- TRUSTED BRAND: Blue Planet Nutrients wants you to succeed so our products are specially formulated for success in the garden!
- Blended with 4% Seaweed: Liquid Sea Kelp Concentrate blended with Ascophyllum Nodosum Seaweed harvested in the Icy North Atlantic
- Blended with 4.5% Humic Acid: Soil Hume is a Highly Concentrated form of Liquefied Carbon Derived from the Highest Quality Humate Source, Leonardite. Leonardite is Considered by many to be the Highest Quality form of Humic Acid
- Versatile Formula for Lawn and Garden: Soil Hume Can help increase the Transfer of Nutrients and Help your Lawn, Garden and Plants Uptake Nutrients more Efficiently
- Use Alongside Lawn Food Fertilizer Program. Can be used on all grass types including Bermuda, St. Augustine, Zoysia, Buffalo, Centipede, Florida Palmetto, Bahia, Fescue, Ryegrass & Kentucky Bluegrass
- Application Rates for Garden: Use on Indoor Plants, Flowers, Roses, Tomato Plants, Vegetables, Fruit, Citrus, Garden Landscape, Hardy trees, Seeding, Over seeding and New sod. Use Alongside Plant Food Fertilizer Program
- Easy to Use, Application Rates for Lawn and Garden: Soil Hume can be Applied using a Hose-end Sprayer, Backpack Sprayer, Spray Tank or Pump-up Sprayer or Watering Can
- 32 ounce, Quart Sized Bottle: Soil Hume is a Quality Soil solution Used Professionally on Commercial Agricultural, Athletic Turf, and Golf Courses
- Made and Manufactured in the United States: Manufactured by a Family Business and Used by Farmers and Professionals all over the world for the past 25 years
- ALL NATURAL: Kelp meal is a popular fertilizer for gardens and farms. It is made from kelp, a type of seaweed that grows in cold, shallow waters. Kelp meal is rich in nutrients, including nitrogen, potassium, and phosphorus. These nutrients are essential for plant growth.
- READY TO USE: Comes in a redealable package. Just open the pack and use as you wish to make your plants really flourish
- CZ GRAIN GUARANTEE: Buy with confidence from CZ Grain, you get natural products that we guarantee!
- ORGANIC FISH AND SEAWEED FERTILIZER: Now our all-natural high quality fish fertilizer is combined with North Atlantic kelp to produce a plant nutrient source that is beyond compare. Your plants get all the benefits of a natural liquid fish fertilizer PLUS all the additional benefits of seaweed in one easy to use liquid product. Plants receiving both fish and seaweed fertilizer out-perform in every category, they are much healthier and more resistant to heat, drought, and cold.
- FISH IS PACKED WITH AMINO ACIDS AND MICRO NUTRIENTS: Our liquid fish fertilizer is an industry leader and produces amazing results in fruits, vegetables, plants, and lawns. It provides much more than just N-P-K (Nitrogen, Phosphorus and Potassium) found in synthetic fertilizers. Our organic liquid fish fertilizer provides a comprehensive mix of amino acids & micro nutrients and minerals all in a usable form perfectly suited for maximum efficiency of uptake for your plants.
- SEAWEED IS AN AMAZING PLANT SUPPLEMENT: We add North Atlantic kelp that is pure and free of contaminants. It is manufactured using our proprietary digestion and refinement process that breaks down complex polysaccharides into smaller, lower molecular weight particles and novel compounds. These new compounds are not present in the original ascophyllum nodosum biomass and are now in a bio- available form and some have been modified making them water soluble allowing for immediate plant benefit.
- EASY TO APPLY FOR GREAT RESULTS: For Lawn: Mix 2 oz in 1 gallon of water, spray to cover 500 square feet. Fruits & Vegetables: Mix 4 oz in 1 gallon of water, spray to drench, including underside of leaves. Flowers & Plants: Mix 3 oz in 1 gallon of water, spray to drench, including underside of leaves. Citrus & Other Trees: Mix 4 oz in 1 gallon of water, spray to drench, including underside of leaves. Seedlings: Mix 4 oz in 1 gallon of water.
- TRUSTED & RELIABLE: At Indian River Organics, we understand that you are placing your trust in us to provide you with the highest quality products available. We have 100% confidence in the quality of our products and continuously strive to deliver the best customer experience possible. Our products are organic, easy to use, cost efficient, sustainable, and yield consistent & amazing results in your garden, no matter what you're growing.
- Excellent soil conditioner and a rich source of minerals and plant hormones
- Promotes plant growth
- Provides nitrogen and potash
- Contains brown seaweed harvested from cold waters then processed at low temperatures and dried
- Made in the USA
- Thorvin for Animals is higher in total nutrients, particularly iodine, potassium, and specific amino acids
- Organic kelp is harvested from the ocean around Iceland. Iceland's nutrient-rich waters are the purest on earth
- It only takes small amounts of Thorvin to deliver a range of key vitamins and minerals not found in forages and grains. Mixed with 1-2% of the dry feed ration, Thorvin can deliver better overall health and productivity in your livestock. Plus, it can cut down on those vet bills to improve your profits!
- Thorvin works by filling in micronutrient deficiencies and helping to support digestive, reproductive, and immune functions. Thorvin is bioavailable and readily utilized and only takes small amounts to supply benefits to livestock at all stages of life.
- Harvested from the cleanest kelp beds on earth, off the coast of Iceland. Then its dried at controlled low temperatures using geothermal energy. Thorvin contains one‐third less moisture, 30% more iodine, and is the only kelp supplement with a guaranteed selenium claim--for just pennies a day,
- ORGANIC GROWTH BOOSTER: Combines premium Ascophyllum Nodosum Kelp with Yucca Schidigera extract, delivering powerful nutrients and water-optimizing benefits to your plants.
- ENHANCED DROUGHT RESISTANCE: Naturally increases plant resilience, reduces water usage, and helps plants thrive even in dry, harsh environments.
- SOIL CONDITIONER & WETTING AGENT: Yucca extract improves soil water absorption, repairs hydrophobic soils, and boosts nutrient efficiency.
- MAXIMUM PLANT BENEFITS: Promotes seed germination, root development, vibrant blooms, and robust growth by optimizing nutrient uptake.
- VERSATILE APPLICATION: Ideal for vegetables, lawns, gardens, houseplants, and container growing. One 11 oz package covers extensive gardening needs economically.
- 【Kelp seaweed extract】has long been known as one of the most effective, natural and potent ways to improve your plants. Improve resistance to stress; promote fruit and flower expansion, coloring and potency, and increase Brix! Rich concentrations of more than 70 vitamins, minerals, and enzymes helps benefit your plants and revitalize your soil media.
- 【OMRI and EU ECOCERT Organic】Dual Organic Agriculture certification (National Organic Program) for both USA and Europe for Organic farming and crop production.
- Sea-K Kelp is extracted from species Ascophyllum nodosum, Sargassum, Laginariausing the most advanced, 【low temperature enzymatic hydrolysis processes】, maintaining a light brown color and highest purity of beneficial bioactive ingredients.
- 【100% Water Soluble Powder】 Suitable for any growing system or media, including greenhouse & outdoor drip irrigation, hydroponics, coco, peat, soil, rockwool, etc. 200g ultra concentrated bag size makes up to 400 gallons!
- 【High Potassium(K)】 For vibrancy, with over 18% soluble K! Also high levels of soluble Magnesium (Mg), Calcium (Ca), Iron (Fe), etc.
- 【Promotes strong growth, root viability, germination and yields.】 Rich in polysaccharides, cytokins, auxins, purines, IAA and more! Don’t miss this essential nutrient for your plants!
- New Gardens: Apply 1 to 2 lbs per 100 sq. ft of garden space. |Containers: Add 1 to 2 tbsp per gallon of soil for new containers. For established containers feed monthly with 1 to 2 tbsp per gallon.
- SEAWEED USABLE BY PLANTS: Derived from organic Ascophyllum Nodosum Seaweed which naturally contains carbohydrates, micro-nutrients, and organic matter!
- ALL VARIETIES OF PLANTS WILL BENEFIT: Such as citrus, fruit trees, garden vegetables and herbs, houseplants, succulents and cacti, flowers, shrubs, and so much more!
- FORMULATED FOR ALL TYPES OF GARDENS/GROWING MEDIA: Can be used in soil, hydroponic, coco coir, rockwool, clay pellets, aeroponic gardens etc.
- THE POWER OF SEAWEED IN A BOTTLE: Our Liquid Kelp supplement helps overall plant vitality for all varieties of plants growing in any type of garden!
- TRUSTED BRAND: Blue Planet Nutrients wants you to succeed so our products are specially formulated for success in the garden!
How to choose a good kelp for garden
Does the idea of finding a fantastic kelp for garden make you anxious? When it comes to purchasing this product, specifically when deciding which model to select, has your head been spinning between options? You are not alone if that is the case. We are aware of the pressure involved in the purchasing process!
Your presence here indicates that you are interested in kelp for garden. Before choosing which product would be the best for your needs after being inundated with information, locate a reliable source with genuine selections. You can get that information from a variety of sources, including buying guides and rating websites, word-of-mouth recommendations from friends and family, online discussion forums where users can share their own experiences, product reviews that can be found all over the internet, and YouTube channels. You can only get the right product through exhaustive analysis. But you realize that’s not always simple. In order to ease your concerns, we have taken the time to develop a list of the top kelp for garden products available right now. You might be wondering how we came up with the list. How was this buying guide developed?
First, we used our algorithms to gather as much reliable data as we could about these products. To verify all the data gathered, we used both artificial intelligence and a lot of algorithms.
Then, our experts used criteria that are recognized in the business to evaluate them according to their quality to price ratio, allowing us to choose the top kelp for garden on the market right now!
The selection of the goods is not arbitrary. Before creating a list, we take into account a number of factors. Below are some of the criteria discussed:
Brand Value: What happens if you choose a dubious brand just because it appears to be a good deal? So the likelihood of receiving a product with a short shelf life increases. That is due to the fact that well-known brands have a reputation to uphold, while others do not. Top kelp for garden brands strive to provide some distinctive traits that set them apart from the competition. So, hopefully one or more of the items on our list will be perfect for you.
Features: Useful features are all you need, not tons of them. We consider the important aspects and select the top kelp for garden based on those.
Specifications: Numbers always help you measure the quality of a product in a quantitative way. We try to find products with higher specifications, but with the right balance.
Quality: A product’s quality may always be quantified with the aid of numbers. We look for goods with better standards that strike the proper balance. The best quality product that gets highly appreciated and recommended by experienced users.
Customer ratings: Would it be accurate to suggest that the kelp for garden were used by hundreds of customers before you? Superior ratings indicate that many customers had better service.
Customer Reviews: Like ratings, provide you with accurate and reliable information about the product from genuine customers. Customer ratings are very important to all of us because they contain accurate and reliable information about the customer service we received from several hundred customers.
Seller Rank: This is very intriguing! Not only do you need a good kelp for garden, you also need a product with rising sales that is trendy. It accomplishes two goals. First, the expanding user base proves the quality of the product. Second, given that number, producers must be able to offer greater quality and after-sales support.
Value: You get what you pay for, they say, so consider the value. Cheap isn’t always good and expensive isn’t always bad. However, that does not imply that spending a lot of money on a product that is flashy but underwhelming is a good idea. Before adding them to the list, we make an effort to evaluate how much value you can get for your money from your kelp for garden.
Durability: Durability and reliability are closely related concepts. You will benefit from a strong and long-lasting kelp for garden for months and years to come.
Product availability: Products come and go, and new ones replace the old ones. Most likely, a few new features and required changes were made. What use is it to use a supposedly good product if the maker no longer supports it? We make an effort to highlight products that are current and offered by one or more trustworthy sellers, if not more.
Negative Reviews: Yes, we do take that into account as well! The goods with the majority of bad reviews are filtered out and disregarded when we choose the best-rated one on the market.
These are the standards by which we selected our kelp for garden. Do we end our process there? Hell no. The most crucial fact about us that you should be aware of is that we regularly update our website with current and pertinent information. We have one more layer of filtration since we place the greatest importance on reader satisfaction. Please let us know if any product included here is incorrect, irrelevant, subpar, or simply out of date. We always value your opinions, and we’ll work hard to make any necessary corrections to our list in response to them.
Why should you believe us?
There are now thousands of possibilities for these products on Amazon, but choosing the best one can be difficult and time-consuming. And what kelp for garden should you purchase in 2022?
This guide is the result of more than 10 years of experience in researching, testing and writing about many topics. Each member of our team is an authority in their area. We read every article we could find online and every consumer review on every retail website for seven hours. Additionally, we discovered a ton of websites that offered helpful resources, including buying tips and thorough information on kelp for garden.
