16 Best Fertilizers for Plants Growing in Water

Discover the best fertilizer for plants growing in water to boost growth and vibrancy. Unlock lush, thriving greenery effortlessly.
BrandMy RatingPrice
The Grow Co
Smart Budget Choice
9.0/10
Tps Nutrients
Best for Hydroponic Growth
9.2/10
Tps Nutrients
Best for Vibrant Foliage
N/A
Superthrive
Best for Root Health
9.4/10
Aerogarden
9.4/10

Best Fertilizer for Plants Growing in Water

Are your plants yearning for that perfect boost to thrive in their aquatic haven? When growing in water, the right fertilizer can transform your leafy companions into vibrant displays of health and vitality. Join us as we dive into the best fertilizers tailored specifically for your hydroponic heroes, ensuring they flourish with luscious green leaves and bountiful blooms.

Smart Budget Choice: The Grow Co Plant Enzymes

Plant Enzymes for Outdoor & Indoor Houseplants - Hydroponic Plant Food for Increased Nutrients - Bloom Booster Fertilizer & Root Stimulator for Plants, 7000+ Active Enzymes per mL, 4 Fl Oz (100+ Gal)
Highlights
High-quality active enzymes
Enhances nutrient absorption
Easy to use

We’re thrilled to spotlight this Smart Budget Choice!

With over 7,000 premium active enzymes packed into every milliliter, this incredible fertilizer invigorates both hydroponic and soil setups.

It’s like giving your plants a superfood for their roots!

We love that it efficiently rejuvenates soil, breaking down dead plant material while enhancing nutrient absorption.

Its high concentration means a tiny bit goes a long way—just 1 milliliter per gallon of water!

This user-friendly formula sets the stage for vibrant blooms and lush leaves.

While it has a mild scent, the results are anything but understated.

Give your gardens the boost they need!

Be sure to also check out the best fertilizer for mango trees for more options! Also, here is the price history so you know exactly when to buy!

Price history for The Grow Co Plant Enzymes on Amazon

Best for Hydroponic Growth: TPS Nutrients

TPS NUTRIENTS Liquid Plant Food for use in AeroGarden, IDOO and Hydroponic Growing Systems, Liquid Fertilizer 8 oz (250mL)
Highlights
Packed with essential nutrients
Easy to use
Proven performance

We’ve found the ultimate solution for your hydroponic endeavors—this liquid fertilizer takes the crown as the Best for Hydroponic Growth!

Specifically designed for systems like the AeroGarden, it’s packed with essential nutrients that ensure your plants experience rapid and lush growth.

Simply add it to your water reservoir, and voilà!

Your indoor garden will thrive without the mess.

While it might leave a few spots if spilled and is tailored specifically for hydroponics, its reliable performance is unmatched.

Join others who’ve transformed their gardens with this magic elixir—your herbs, veggies, and flowers will thank you!

Be sure to also check out the best fertilizer for passion fruit for more options! Also, here is the price history so you know exactly when to buy!

Price history for TPS Nutrients on Amazon

Best for Vibrant Foliage: TPS Nutrients Fertilizer

Water Plant Fertilizer, Complete Liquid Water Plant Food, 8 oz (250mL)
Highlights
Complete fertilizer
Promotes vibrant foliage
Easy care instructions

We’re excited to share our thoughts on this incredible liquid fertilizer, which we've crowned as the Best for Vibrant Foliage!

If you’re looking to elevate the aesthetic of your water plants, this complete formula is the way to go.

Its unique blend is specifically designed to promote healthy growth and vibrant foliage, ensuring your plants look their absolute best.

Plus, with easy-to-follow care instructions included, even novice gardeners will feel confident in their plant care journey.

Made in the USA, it’s a solid choice for anyone serious about cultivating lush, thriving water plants.

Don't miss out on enhancing your garden!

Be sure to also check out the best fertilizer for water propagation for more options! Also, here is the price history so you know exactly when to buy!

Price history for TPS Nutrients Fertilizer on Amazon

Best for Root Health: SUPERthrive

SUPERthrive The Original Vitamin Solution - Liquid Concentrate, May Add to Any Fertilizing Program, 4 fl. oz.
Highlights
Enhances root development
Reduces transplant shock
Versatile for many plants

When it comes to nurturing roots, we unequivocally recommend SUPERthrive as the best choice for root health.

This powerhouse liquid fertilizer features kelp, a natural booster packed with ocean-derived nutrients that promote vibrant growth.

We love how it excels in root development and significantly reduces transplant shock, making your gardening efforts smoother.

Whether you're transplanting or maintaining various plants, this non-toxic solution caters to both home gardeners and professionals alike.

Sure, it has a bit of an unpleasant smell and can be a messy pour, but the results are undeniably worth it.

Give your roots the boost they deserve!

Be sure to also check out the best fertilizer for aroids for more options! Also, here is the price history so you know exactly when to buy!

Price history for SUPERthrive on Amazon

AeroGarden Fertilizer

Miracle-Gro AeroGarden Liquid Plant Fertilizer for Use in AeroGarden Hydroponic Indoor Garden, 3 fl. oz.
Highlights
Specially formulated for hydroponics
Easy to use dispenser
Promotes faster plant growth

We’re excited to share our thoughts on the AeroGarden Liquid Nutrients!

This specially formulated blend is a game changer for anyone growing plants in water.

With a convenient dispenser cup, adding nutrients becomes a breeze—just mix it into your watering routine for faster and more consistent growth.

We love its patented organic pH buffering system, ideal for all hydroponic setups.

While the 3-ounce bottle may seem small and on the pricier side, the results speak for themselves.

Enjoy thriving plants with this liquid gold, putting you one step closer to your gardening goals!

Be sure to also check out the best fertilizer for jasmine plant for more options! Also, here is the price history so you know exactly when to buy!

Price history for AeroGarden Fertilizer on Amazon

Miracle-Gro

Miracle-Gro Water Soluble All Purpose Plant Food, Fertilizer for Indoor or Outdoor Flowers, Vegetables or Trees, 3 lbs.
Highlights
Full of essential nutrients
Safe for all plants
Easy to use with water

If you're looking to boost your aquatic plants, we can't recommend Miracle-Gro Plant Food enough!

This nutrient-packed formulation is designed to give your plants a powerful boost, making them bigger and more beautiful than ever.

Simply feed your plants every 1 to 2 weeks, and watch them thrive!

It’s versatile, as it works with both the Miracle-Gro Garden Feeder and a watering can, making application a breeze.

Plus, it’s safe for all types of plants, so you don't have to worry about any burning.

While it may clump in humidity, the results it delivers are well worth the effort!

Be sure to also check out the best fertilizer for ginger plant for more options! Also, here is the price history so you know exactly when to buy!

Price history for Miracle-Gro on Amazon

Farmer's Secret Fertilizer for Plants Growing in Water

Hydroponic Booster Fertilizer - Super Concentrated 4-11-8 Formula - Use with Any Hydroponic or Aeroponic System - Great for Herbs, Veggies, Fruits, and More (8oz)
Highlights
Professionally formulated
Super concentrated formula
Versatile application methods

When it comes to maximizing your hydroponic yield, Farmer's Secret is a name we trust!

This professionally formulated plant food is a game changer—just a tiny teaspoon per gallon of water delivers impressive results.

The super concentrated formula allows for multiple application methods, whether you choose to pour it directly into your reservoir or spritz it as a foliar feed.

Although some users report a slight water film, the benefits often outweigh this minor issue.

With a weekly dosage, we’re thrilled to experience the power of this nutrient-rich elixir.

Get ready to watch your plants thrive!

Be sure to also check out the best fertilizer for pothos plants for more options! Also, here is the price history so you know exactly when to buy!

Price history for Farmer's Secret on Amazon

API PondCare Plant Food Tablets

API PONDCARE AQUATIC PLANT FOOD TABLETS Potted Plant Fertilizer 3.8-ounce, 25 Tab (185A)
Highlights
Promotes vibrant blooms
Easy to use
Provides essential nutrients

When it comes to nurturing your water-loving plants, PondCare Aquatic Plant Food Tablets truly stand out.

We love how these little tablets pack a big punch, providing essential nutrients and iron for vibrant growth and stunning blooms throughout the season.

Just pop them into your pond plants, and watch as they thrive!

However, while they do work wonders, be cautious—using too many can cloud the water, so stick to the recommended dosage.

And if you have fish, this isn’t the best option for your setup.

Overall, we found these tablets to be a game-changer for aquatic gardening!

Be sure to also check out the best fertilizer for maple trees for more options! Also, here is the price history so you know exactly when to buy!

Price history for API PondCare Plant Food Tablets on Amazon

Miracle-Gro

Miracle-Gro Indoor Plant Food, Liquid Plant Food for Houseplants, Snake Plants, Peace Lilies, Flowers, Vegetables, Herbs and More, 8 oz., 2-Pack
Highlights
Instant nutrient delivery
Easy to use
Odorless formula

When it comes to nurturing your indoor oasis, Miracle-Gro Indoor Plant Food is a standout choice for us.

Its instant nutrient delivery means your plants can soak up what they need to thrive without delay.

We appreciate its odorless formula, ensuring that our homes stay fresh while we pamper our plant pals.

Whether you’re tending to houseplants, snake plants, or peace lilies, this product is tailored for various indoor favorites.

Just one pump for small pots or a simple mix with water makes feeding effortless.

However, keep in mind it’s strictly for indoor use.

Overall, it’s a marvelous addition for any green thumb!

Be sure to also check out the best fertilizer for willow trees for more options! Also, here is the price history so you know exactly when to buy!

Price history for Miracle-Gro on Amazon

Tigvio Nutrients A&B Fertilizer for Plants Growing in Water

800ml Hydroponic Nutrients A&B for Plant Growth - Fertilizer for Indoor Hydroponics Garden & Growing Vegetables, Fruits, Flowers
Highlights
Complete hydroponic solution
Easy to mix and use
Promotes strong plant growth

When it comes to finding the perfect fertilizer for plants growing in water, Tigvio’s A&B Plant Food stands out as a complete hydroponic solution.

We love how it caters to various gardening needs—indoors or outdoors—making it incredibly versatile.

Mixing it is a breeze; just combine 5ml of each nutrient with 1L of water.

This product is designed for optimal nutrient absorption, enabling plants to grow stronger and faster.

However, it does require careful measurement, so be precise.

If you're diving into hydroponics, this nutrient duo is a delightful addition to your setup!

Be sure to also check out the best fertilizer for snake plant for more options! Also, here is the price history so you know exactly when to buy!

Price history for Tigvio Nutrients A&B on Amazon

Purived Fertilizer

Purived 16oz All-Purpose Liquid Plant Fertilizer - Makes 50 Gallons, for Indoor Houseplants, All-Natural, Groundwater Safe, Made in USA
Highlights
Odorless formula
Easy to use
Great value for money

When it comes to nourishing our green companions, we often seek the best value, and Purived Plant Food truly delivers.

With one bottle yielding an impressive 50 gallons of odorless fertilizer, it’s a breeze to mix a cap full with water and witness the instant feed magic.

This all-purpose formula works wonders for both indoor and outdoor potted plants, adapting effortlessly to various feeding methods—from soil drench to hydroponics.

Though slightly pricey and needing some dosage care, its ease of use far outweighs the minor drawbacks.

We think it’s a fantastic addition to your gardening toolkit!

Be sure to also check out the best fertilizer for redbud trees for more options! Also, here is the price history so you know exactly when to buy!

Price history for Purived Fertilizer on Amazon

TPS Nutrients

TPS NUTRIENTS Indoor Plant Food for Houseplants, Liquid Fertilizer 8 oz (250mL)
Highlights
Promotes healthy growth
Easy to follow instructions
USA made quality

When it comes to nurturing our beloved houseplants, we can't recommend TPS Nutrients' Complete Fertilizer enough!

This powerhouse promotes vibrant foliage and strong roots, ensuring your plants thrive in water.

We love the easy-to-follow care instructions included, making plant care a breeze, even for novices.

Plus, it's proudly made in the USA, which speaks to its quality.

Just a friendly heads-up: be cautious with mixing, as misuse could lead to potential burn.

Overall, if you're looking to elevate your green thumb game, this fertilizer is a fabulous choice for water-grown plants!

Be sure to also check out the best fertilizer for cedar tree for more options! Also, here is the price history so you know exactly when to buy!

Price history for TPS Nutrients on Amazon

HiThrive Plant Food Fertilizer for Plants Growing in Water

32oz Aeroponics & Hydroponics Liquid Plant Food - Up to 96 Feedings - Rich in Hydroponic Nutrients, Ideal Hydroponic Plant Food & Liquid Fertilizer for Indoor and Outdoor Hydroponics Growing Systems
Highlights
Consistent plant growth
Powerful nutrient formula
Easy to apply

We absolutely love HiThrive's liquid fertilizer!

With a 4-3-6 NPK ratio and essential micronutrients, it ensures consistent growth for our hydroponic and aeroponic plants.

Each 16 oz bottle is a powerhouse, providing up to 48 feedings, which is perfect for our busy schedules.

Plus, it’s so easy to use—just mix 5 ml per quart of water every two weeks for vibrant, thriving plants.

We’ve noticed greener and stronger growth, making it a favorite for not just our indoor plants but also our hydroponic veggies.

Just remember, it’s not for soil, so keep that in mind when planning your garden!

Be sure to also check out the best fertilizer for root vegetables for more options! Also, here is the price history so you know exactly when to buy!

Price history for HiThrive Plant Food on Amazon

Easy Peasy

Easy Peasy Liquid All Purpose Indoor Plant Food | 4-3-4 Nutrient Fertilizer for Indoor Potted Plants | Specifically Formulated for Live Houseplants
Highlights
High nutrient concentration
Easy to use
No mess, no smell

We’re excited to share our thoughts on Easy Peasy Indoor Plant Food, the ultimate solution for nurturing your beloved houseplants.

Formulated with a high-concentration 4-3-4 nutrient blend, it requires just a mere 1/2 teaspoon per watering, making it an ideal choice for busy plant parents.

We appreciate how easy it is to use—simply mix it with water, and voilà!

Your plants receive the essential nutrients they crave without the mess or unpleasant odors.

Although the bottle size might seem small, its efficiency means less waste, allowing you to feed more plants than ever. Transform your indoor garden effortlessly!

Be sure to also check out the best fertilizer for birch trees for more options! Also, here is the price history so you know exactly when to buy!

Price history for Easy Peasy on Amazon

Pennington Plant Food

Pennington 100550385 All-Purpose Plant Food 2-3-2-32oz, White Label
Highlights
Easy dosing cap
Safe for all plants
Promotes larger blooms

When it comes to nurturing your plants in water, the Pennington Liquid Fertilizer is a standout choice.

With its no-mess dosing cap, we found measuring a breeze—one squeeze equals one dose!

This ensures our plants receive the essential nutrients needed for bigger blooms and fruit production.

Safe for all plant types, it thrives on consistency; we recommend applying every 2-4 weeks.

However, be mindful with sensitive plants, as over-dilution can cause issues.

Overall, with a little care, this product guarantees vibrant growth, making our gardening adventures even more rewarding! 🌱✨

Be sure to also check out the best fertilizer for mulberry tree for more options! Also, here is the price history so you know exactly when to buy!

Price history for Pennington Plant Food on Amazon

Marphyl Fertilizer for Plants Growing in Water

MARPHYL Organic Liquid Fertilizer - Outdoor & Indoor Plant Food - All-Purpose, Nutrient-Rich Lawn Fertilizer & Soil Enhancer for House Plants, Flowers, Vegetables, Succulents, Bamboo, Hydroponics
Highlights
High nutrient content
Easy to use
Organic and sustainable

When it comes to finding the perfect fertilizer for plants thriving in water, MARPHYL Marine Phytoplankton truly stands out.

This superior indoor plant fertilizer is not only packed with nutrients, but its organic and sustainable formula makes it a guilt-free choice.

We adore how easy it is to use—just mix a simple 1:20 ratio with water and watch your greenery flourish!

With its high levels of potassium, nitrogen, and phosphorus, your plants will radiate health and vibrancy.

Although it's got a strong odor, the benefits outweigh the downsides, helping your indoor and outdoor spaces reach their full potential!

Be sure to also check out the best fertilizer for elephant ear plants for more options! Also, here is the price history so you know exactly when to buy!

Price history for Marphyl on Amazon

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