Search  for anything...

MARPHYL Organic Liquid Hydroponics Fertilizer - Liquid Plant Food - All-Purpose, Nutrient-Rich Lawn Fertilizer & Soil Enhancer for House Plants, Flowers, Vegetables Succulents Bamboo

  • Based on 9,288 reviews
Condition: New
Checking for product changes
$14.98 Why this price?
Holiday Deal · 42% off was $25.99

Buy Now, Pay Later


As low as $3 / mo
  • – 4-month term
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout. Payment plans are offered through our trusted finance partners Klarna, PayTomorrow, Affirm, Afterpay, Apple Pay, and PayPal. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

This item is eligible for return within 30 days of receipt

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.


Availability: In Stock.
Fulfilled by Amazon

Arrives Thursday, Dec 5
Order within 7 hours and 59 minutes
Available payment plans shown during checkout

Size: 16.9 oz


Features

  • Superior Indoor Plant Fertilizer - 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.
  • Natural Indoor Plant Food - 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.
  • Miraculous & Beneficial - Found in oceans across the world, marine phytoplankton are micro algae that infuse your plants, trees, grasses, and more with everything they need for health and longevity. High in potassium, nitrogen, and phosphorus as well as calcium and magnesium for lush foliage. Your lawn & garden will be the envy of the neighborhood, and your indoor plants will brighten your home.
  • Easy to Use Water Soluble Fertilizer - Simply mix a 1:20 ratio of our liquid plant fertilizer with water. Once in the water, stir, and then pour onto the plants. Perfect for use in small and large sprayers. Recommended use is every two weeks. You'll see the difference after just one application!

Brand: MARPHYL


Item Weight: 0.53 Kilograms


Item Form: Liquid


Coverage: Full


Liquid Volume: 500 Milliliters


Brand: MARPHYL


Item Weight: 0.53 Kilograms


Item Form: Liquid


Coverage: Full


Liquid Volume: 500 Milliliters


Specific Uses For Product: Hydroponics,Lawn,Organic,Plant Food


Product Dimensions: 2.44 x 2.44 x 7.68 inches


Item Weight: 1.17 pounds


Manufacturer: MARPHYL


Item model number: 500ml


Is Discontinued By Manufacturer: No


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, Dec 5

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Marphyll is a Great fertilizer for sun and heat-beaten vegetable garden and flowers
Size: 1.05 gal
My back yard transition from little grass and big weeds plus 6 worthless cedar trees was completed around March 1st. New plantings all in early March. I did not realize that the landscaper did not add any nutrients to the soil, only the potting soil plants arrived in. The Pride of Barbados (pretty red and yellow flowers) were about 8" tall, the Elephant Ears were about 15" tall and several of the leaves were torn by hail and/or transport. Herbs and vegetables were planted in composted and fertilized organic raised bed soil and hardly grew an inch. I watered as recommended, and we had an uncharacteristic rainy month of May. Someone turned the heat on in early June (still on). Within 4 days of first fertilization with Marphyll, everything started to perk up, and about 6 weeks later these beautiful flowers are flourishing and the hummiongbirds love them. Everyone's veggies in South Texas back yards are finished by the end of June, but the herbs are still doing great. I used a 2 gallon watering can with a 20:1 mix of the liquid Marphyll. Everything got 1-2 cups (no, I didn't measure) followed be a big dose of water from the hose wielded by 9 year old grandson. Per instructions, we are doing this every 2 weeks. It's not difficult, but a bit tedious because I have a lot of plants. The odor is what you'd expect from a product dug up from the bottom of the ocean, fish poop and all. It is expensive, but seems worth it in my situation. Just purchased another batch. ... show more
Reviewed in the United States on July 10, 2023 by Paula29 Paula29

  • My plant experiences!
Size: 16.9 oz
Background: I have about 90 houseplants. Nothing out of this world, very normal houseplants. A lot of pothos, philadandrons, dracaena, sansaveiras, some herbs, tradescantias, a few succulents, etc. I mention this because I know some people have rare plants, I do not. I know a lot of people might have similar stuff as me, which is why I find it important to mention 1: the smell. Yeah, it's yucky, but honestly you only notice it right after you shake and open and SMELL it. It goes away so fast that it doesn't bother me. Neem oil smells way worse. Please don't let this be a buying factor. 2: it works! But not an all plants. Which is why I'm giving it 4 stars. Though it's a bit silly of me to expect something to work for all plants. That's kind of impossible. Plants have different fertilizer needs. 3: plants that love it: my pothos, philadandrons, alocacias, herbs, string of hearts, dracaenas, umbrella plant, fittonias, tradescantias, boston fern & hypoestes, . In each category, I have several varieties or a few of each. It's already fall and growth has slowed down. But I noticed my pothos perk up and get bushier rather quickly. Noticed a bunch of growth at the base of some plants, not just leaf growth or length. They seem to be perkier, happier and not as droopy. My alocacia has zero growth and I thought I was going to lose are her leaves, but she sprouted a new one. My herbs ARE GROWING LIKE CRAZY. I had a rubber tree that I thought was dying as a few stumps had been pruned and were dead. I haven't noticed new leaves but it's taller. But most importantly, my poor diffenbachias. Have 2 of them. They hate my apt. I thought they were for sure goners. Moved them, changed soil, all that you do. Used this, and 1 of them has 4 new leaves coming in. This was considering I was losing leaves everyday with no new growth. I will definitely keep up a routine with this product on these plants! 4: plants that don't seem to care: succulents. I have not seen any change. Nothing good, nothing bad. Nothing with my sansevieras either. Maybe its because they need such little care and little to no water at the moment. Also Hoyas, not sure yet if this helped. My hindu rope is small and wasn't doing well and now she is. But I don't know if its because my care improved or it was this. Up for debate still. 5: lastly, plants that hated this: this is partially my fault because I should have known better. These are finicky anyway and aren't fertilizer lovers. But I got too excited and carried away. CALATHEAS: DO NOT USE THIS ON THEM. Mine were growing and doing very well and after this, the very next day the leaves were curled up and dry and almost gone. I should have known and didn't listen to myself. Also, my purple passion. Almost killed her. Same thing, thriving one moment, almost gone the next. Sorry for the long review, but this experience and I think its important for us plant lovers to share our experiences with each other. Not all plants are the same and they all like different things. But man, I liked this product. And I know which plants I'll continue to use it on and which ones to never give it to. I'll probably update my review as I continue to use this. Will definitely be purchasing again once I run out. 1 capful to 1 cup of water isn't much but it it'll go faster when you have tons of plants! ... show more
Reviewed in the United States on November 24, 2019 by Amazon Customer

  • Fast growing and healthy
Size: 16.9 oz
I grow assorted sprouts hydroponicly. I bought this hoping it would work for these delicate plants-and it does! Beautifully! I dilute to half strength for the newly sprouted and the growth is amazing. I'm very, very pleased with this
Reviewed in the United States on August 2, 2023 by BF

  • Do not use in the house without airing out the smell
Size: 16.9 oz
I used this on my LECA house plants and the smell was awful. Fishy sulfur like odor. Followed another reviewer's suggestion and left the bottle outside without the top on to air out. Reduced the offensive odor. Seems like good fertilizer. This bottle makes approximately three gallons when diluted.
Reviewed in the United States on July 21, 2023 by MrPAW

  • Best ever
Size: 1.05 gal
This is some of the best fertilizer that I have ever purchased. Granted it smells awful whatever is inside of it is a miracle I saw a difference in my lawn plants, ash flowers, herbs, etc. literally overnight.
Reviewed in the United States on July 30, 2023 by Elle Gilch

  • Best indoor plant fertilizer out there!!!!
Size: 16.9 oz
I love this fertilizer so much!!! My plant babies are thriving (as you can see on the pictures)!! My rehab Thai constellation gave me a beautiful leaf! My monstera albo that I had for a few months is about to have it's second leaf!!!! All 80+ of my plants has new growth/leaves!! Don't wait, order it now. You're plant babies will thank you! ... show more
Reviewed in the United States on July 15, 2023 by Valerie Hinong Valerie Hinong

  • Excellent Product!!!
Size: 16.9 oz
My Monstera plant loves this product! Having recently purchased my Monstera I wanted to ensure she got the best & she seems to be loving it! Thank you!
Reviewed in the United States on July 25, 2023 by D.Murphy

  • All good
Size: 16.9 oz
I like this!
Reviewed in the United States on August 4, 2023 by Ann Barabe

Can't find a product?

Find it on Amazon first, then paste the link below.