Best Water Soluble Garden Fertilizers in 2026

Instantly feeds to grow bigger, more beautiful plants versus unfed plants

Product packaging may vary

Use with the Miracle-Gro Garden Feeder or any watering can

Product 1: General Hydroponics FloraGro 2-1-6 delivers nutrients for structural and foliar growth

Product 1: Combine FloraGro 2-1-6 with FloraMicro and FloraBloom to create a nutrient mix tailor-made for your plants and their phase of growth (seedling, cutting, structural, flowering, or fruiting)

Product 1: Ideal for hydroponic applications and as a nutrient supplement for potted plants

Proven Winners water Soluble fertilizer comes in an easy-to-use 2.5 lb. Container with a carrying handle and measuring scoop

24-12-17 fertilizer blend

Following the application rates on the container, apply at least every week, or every third watering

Down To Earth Langbeinite 0-0-22 is a naturally mined crystalline mineral that supplies the water-soluble sulfate form of three vital plant nutrients: potassium, magnesium and sulfurs

Its maximum chlorine content is less than 3.0 percent, minimizing the potential for fertilizer “burn,” and its neutral pH does not alter soil activity

Potassium contributes strongly to overall plant health by regulating internal processes. Since potassium makes up part of the fluid of the plant, it is found throughout plant tissue, meaning plants need a strong source of potassium as they grow

MasterBlend 4-18-38 Master Kit (3 Separate Components in correct amounts)

Contains MasterBlend 4-18-38, Calcium Nitrate 15.5-0-0, and Epsom Salt (Magnesium Sulfate)

Used by professionals worldwide for optimum plant growth

Easy Peasy Plants Urea is made with the highest quality nitrogen urea prills. Nitrogen boosts development of green matter of all your indoor flowers, lawn, and garden vegetables

Nitrogen is needed by every plant to product leave, stems, roots, blooms, and flowers. Easy Peasy Plants Urea Nitrogen provides the nutrients needed to produce lush greenery.

Wide application range from home garden, lawns, indoor and outdoor plantss to TIE-DYE PROJECTS

DO NOT BE FOOLED by other companies selling you dead Mycorrhizae powder in a bag. Every bag of Myco Supreme Premium Mycorrhizal Fungi comes alive, fresh, and super potent…GUARANTEED. Order Now With Confidence that you are getting what you pay for.

20X MORE CONCENTRATED than leading brands: Total ACTIVE Microbe Rhizophagus Irregularis…..50 Spores/g *Equivalent up to 5000 propagules per gram and 141,000 propagules per oz. This is 20 times more than leading brands in the marketplace.

HIGH PERFORMING Mychorrizal Fungi Trifecta Myco Supreme utilizes bio-encapsulated spores of the carefully selected and versatile Rhizophagus Irregularis mycorrhizae strain. Known for versatility and effectiveness.

Contains chelated minor elements

CONTAINS: 20% Nitrogen

20% Phosphorus (P205)

The information below is per-pack only

Excellent for evergreens, dogwoods, hydrangeas, magnolias and many other acid-loving trees and shrubs

Encourages vigorous root growth and lush foliage

Makes Up to 12 Gallons - The 8oz bottle makes 12 gallons of ready to spray neem oil when mixed according to directions

Ready to Mix - Simply mix with water and spray. No surfactants or additional ingredients are required

Cold Pressed - Retains the integrity and original composition of neem oil in its purest form

Encourages new growth

Ideal for all indoor and outdoor plants

Feeds like nature every time it rains

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.

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 form suitable for any growthing system or media. Including greenhouse & outdoor drip irrigation, hydroponics, coco, peat, soil, rockwool, etc. 200g ultra concentrated bag size makes up to 400 gallons!

ORGANIC PLANT FERTILIZER: GS Plant Foods Ocean Magic Sea Minerals works as a soil fertility supplement that re-mineralizes the soil. Ocean Magic is derived from extremely clean sea water. This ocean fertilizer contains all the minerals in the same proportions that those same minerals occur in the blood of healthy animals. Anyone who wants to optimize their garden and improve the mineral content of their soil and vegetation can do so by applying Ocean Magic.

WATER-BASED SPRAY SOLUTION: This mineral fertilizer is 100% water-soluble in contrast to rock powders which are not. Ocean Magic Sea Minerals is helpful to all types of soil and any growing conditions. GS Plant Foods sea fertilizers will produce major improvements in your plant’s growth (volume) and will improve the nutrient value and taste of food products you grow. Our ocean minerals liquid fertilizer is powerful enough for outdoor plants but gentle enough to not burn indoor plants.

SPRAY ON ALL PLANTS OR CROPS: GS Plant Foods Ocean Magic Sea Minerals is a high quality organic fertilizer that gives excellent plant growth. GS Plant Foods liquid plant fertilizer can be applied in your lawn and turf, fruits, vegetables, gardens, and house plants without concern for waste or harmful chemicals. GS Plant Foods house plant fertilizer greatly benefits the development of the plant’s root system, resulting in stronger, healthier plant, enabling growth and nutrient uptake.

New Package - Same Amazing Product that Plants & Customers LOVE!

EASY & ALL PURPOSE - Simply grow healthy plants and beautiful gardens... Just add directly to seed, soil, transplant roots, existing plants, or mix with normal watering. Works for everyone, every plant, everywhere, every time!

A LITTLE GOES A LONG WAY - 1/2 lb bag makes 32+ gallons or treats up to 1,000 sf of soil or plants. Provides benefits of compost and advanced nutrition that builds healthy nutritious living soil and feeds plants continuously on-demand.

RAW Nitrogen is a macro element, in that it is essential nutrient for vegative growth and development. Nitrogen is the N in N-P-K ratios found on most fertilizers. RAW Nitrogen can easily and quickly solve nitrogen deficiency issues as it is immediately available to be taken up by the plant.

Easily mixes into water and is completely soluble.

BENEFITS: Great for treating individual deficiencies. The primary component in overall plant development. Essential for production of Chlorophyll, Amino Acids, and Enzymes

General purpose water soluble fertilizer for plants grown in soil.

Can be used in both soil and foliar applications.

Multiple sources of Nitrogen for staggered release.

Great for fertigation or seed treatment

Adds organic matter

Completely water soluble

Designed to promote bigger blooms and greener foliage on all potted plants

Features a 20-20-20 formula, with just the right balance of Nitrogen, Phosphate, and Soluble Potash

Provides your plants essential nutrients they need to grow strong and healthy

Miracle gro water soluble fertilizer miracid acid loving plant food

Instantly feeds acid loving plants like azaleas, hydrangeas and rhododendrons

Double feeding action feeds through both the roots and the leaves

RAW Enzymes are a proprietary blend designed to clear away problems that may occur in the root zone of plants. Unlocking minerals that are otherwise unavailable to the root system.

Tech Grade and completely water soluble allows for easy cleaning of foliar equipment and emmiters

Excellent way to flush at the end of your grow cycle and clear feeding lines of unwanted fertilizer build up.

COMPLETE MACRONUTRIENT PROFILE FOR PLANT NUTRITION: The combination of our Base A & B Bundle results in a complete feed for rapidly growing flowering plants and indoor plants. Our signature blend consists of Nitrogen, Phosphorus, Potassium, Calcium, Magnesium, and more.

EASY-TO-USE TWO-PART SYSTEM: Simple use both bottles at equal rates throughout the entire growing cycle, from the beginning of the vegetative stage until the end of the flowering stage. We recommend application with every watering for maximum results.

COMPATIBLE WITH ALL GROWING MEDIUMS: Our clean-running formula is suitable for all grow mediums, including potting soil for indoor plants, hydroponics, aquaponics, and coco coir cultivations.

Superior Liquid Plant Food - MARPHYL Marine Phytoplankton is ideal as an outdoor and indoor plant fertilizer. It's an excellent vegetable fertilizer, houseplant fertilizer, and lawn fertilizer. It's great for your garden, greenhouse, and hydroponics. Enjoy gorgeous, colorful blooms with this exceptional flower food. Enhance soil quality and watch your trees, shrubs, vines, grass, plants, flowers, and vegetables thrive.

Naturally Boost Plant Health - Marine Phytoplankton are Microalgae full of nutrients, vitamins, and minerals. It's so much more than your average liquid plant fertilizer. MARPHYL's fertilizer for indoor plants and outdoor plants, grasses, trees, flowers and more, provides an astounding array of nutritional elements. Packed with vitamins, minerals, essential fatty acids, DHA, EPA, amino acids, chlorophyll, and a vast spectrum of phytochemicals, so your lawn, garden, and greenhouses will flourish

Organic & Sustainable - Our Liquid Marine Phytoplankton Soil Enhancer is an organic, all purpose plant food that is harvested 100% naturally. It's vegan, non-toxic, non-GMO & sustainably made with no preservatives making it safe for vegetable gardening, ground water, and pets. It replenishes your soil on a regular basis to ensure the continued growth and beauty of your vegetation. Our organic plant fertilizer will meet your every need and provide a safe environment for all gardening.

RAW Humic Acid consist of two parts, humic and fulvic acid which actively help take up nutrient ions that are locked up in soil. The extracts, obtained from leonardite, also contain many beneficial trace elemnts that activate important enzymes in the plant.

RAW Humic Acid- Easily mixes into water and is completely soluble. Add at 5 to 2 ratio with RAW Kelp for 50% better results. The Seaweed component is rich in plant growth hormones which signal the plant to grow. The chelating effect of the humic acid amplifies the signal of the hormones allowing for greater root mass and faster growth.

BENEFITS: Chelates minerals and trace elements otherwise locked in soil allowing for optimal nutrient uptake for healthier stronger plants.

ABOUT THE PRODUCT: RAW Phosphorus contains 61% pure water Soluble Phosphate (P). This product also contains a small amount of Ammonium Nitrogen (9%) which plants can utilize during bloom. Phosphorus is particularly beneficial during the early rooting stage but also provides energy during fruit and flower production. RAW Phosphorus is ideal for boosting Phosphorus (P) levels, treating deficiencies and creating optimal recipe solutions. Works in conjunction with all nutrient and feeding programs.

RAW Phosphorus- Easily mixes into water and is completely soluble.

BENEFITS: Promotes fruit and flower production. A critical component in the storage of energy within the plant. It Promotes rooting and early plant vigor. Important to cellular division and development of new plant tissue.

ABOUT THE PRODUCT: RAW Yucca is derived from Yucca Schidigera plant. Yucca extract is a natural surfactant or wetting agent. Yucca Schidigera contains saponins, a soapy, steroidal-like substance that acts like a spreader or sticker for horticulural use. Works as a great addition to any foliar spray. Yucca makes water wetter allowing water to penetrate deeper into the soil and plant tissue.

RAW Yucca- Wetting agent that easily mixes into water and is completely soluble.

BENEFITS: High saponin content makes for an excellent surfactant. Food source for beneficial microbes. Increase effectivity of foliar sprays and root zone applications. Yucca helps keep minerals and organics in suspension with one another.

Starter solution for new plantings and transplants

For root growth, reduces transplant shock

Active Ingredients: Phosphate, Chelated Iron, Derived From Phosphoric Acid, Ferric Edta

RAW Potassium contains 50% Water Soluble Potash derived from potassium sulfate. This is the highest concentration of natural Water Soluble Potassium available to the home gardener. During fruiting and flowering, large amounts of potassium are used by the plant in a matter of days which can lead to potassium deficiencies. RAW Potassium is ideal for boosting Potassium levels, treating deficiencies and creating optimal recipe solutions.

RAW Potassium- Easily mixes into water and is completely soluble.

BENEFITS: Potassium is known as the Health Element. It helps maintain water and nutrient movement within the plant. Increases sap and sugar content during later stages of fruit and flower.

Premium Water Soluble Fertilizer with minor elements

Excellent for making your bananas super happy

If your banana plants are struggling, this will help them!

Ideal for all-season; no-expiration date; all-purpose fertilizer / plant food.

4% nitrogen, 2% phosphorus, 2% potassium; pH level 6

Derived from chicken manures; processed with fermentation, high-temperature sterilization, 6:1 concentration, dried and pelleted; unlike raw, processed manures will not burn roots; water soluble; granular form.

UPGRADED FORMULA: Introducing ENVY All-Purpose Plant Food 20-20-20 - expertly crafted with only the finest nutrients, ensuring your plants receive top-notch care without any unnecessary fillers or chloride, common in other all-purpose blends.

BOOSTS GROWTH FOR A VARIETY OF PLANTS: Our unique macro & micronutrient blend supports a wide range of plants, from vibrant roses and bountiful vegetables to thriving fiddle leaf figs, bonsai trees, geraniums, pothos, peace lilies, orchids, dracaenas, anthuriums, lucky bamboo, and palms.

CONVENIENT RESEALABLE POUCH & MEASURING SCOOP: We understand that storage and ease of use matter to you. That's why our water-soluble plant food comes in a handy, resealable pouch with a measuring scoop included.