Best Fertilizer For Indoor Plants

What Is The Best Fertilizer For Indoor Plants: Top 5 Options You Should Choose Today

In order to work properly, the human body needs vitamins and minerals. The same thing is needed for plants except it is called differently. It is called fertilizer. So, what is the best fertilizer for indoor plants? As you may know already, there are countless options out there. We were able to test most of them and now we will present you a list with the top 5 choices. Without further ado, let’s reveal the top options.

Top 5 Best Fertilizers For Indoor Plants

Miracle-Gro Water Soluble All Purpose Plant Food, 5 lb.

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Miracle-Gro Water Soluble All Purpose Plant Food is the best organic fertilizer and the one we liked the most. It has been with us for a long period of time and it is the most popular and the best-selling product of this kind. If you simply want to know what is the best fertilizer for indoor plants, there’s an answer. It is loaded with all main nutrients plants do need. As a result, plants can grow bigger, offer more fruits and vegetables, and also stay perfectly healthy.

The product is added to water and then sprayed on the plants. The same brand makes Miracle-Gro Garden Feeder which is ideal for this purpose and very easy to use. You need to use the fertilizer once per 1-2 weeks. It is safe for all plants and herbs. It won’t burn the roots or the plants themselves but you should read the user manual once you get the package. 1.5 pounds will be sufficient for 600 square feet. The analysis is 24-8-16.


  • Easy to use
  • Safe for the plants
  • For all plants
  • Massive coverage


  • Miracle-Gro Garden Feeder is an optional extra
  • Small size

Miracle-Gro Indoor Plant Food Spikes

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Here we have the best fertilizer for herbs, plants, and flowers that comes in a different form. It comes in the shape of sticks. You get a plastic tool used to drill a hole in the soil and insert a stick. There are 48 sticks in a single package. Of course, users can choose between 24 spikes and also 12 packs of 48 spikes if needed. Once added to the pot, it will provide essential nutrients for approximately 2 months in winter and 30 days in summer.

The fertilizer is safe to use and it doesn’t cause any negative effect on the plants. All indoor plants can be paired with it. This refers to foliage and all flowering plants. The NPK 6-12-6 is guaranteed. All micronutrients needed for the plants are present such as phosphate and nitrogen. Don’t forget to water the plant once you insert a stick.


  • Appealing usage
  • For all plants
  • Lasts up to 2 months during winter
  • Value for money


  • 12 pack version is expensive
  • Impractical plastic tool for drilling holes

Jobe’s Organics 09524 Purpose Granular Fertilizer, 16 lb

Jobe’s Organics 09524 Purpose Granular Fertilizer, 16 lb
  • Organic granular fertilizer; Fast acting fertilizer for flowers, vegetables, shrubs, trees & plants
  • OMRI listed for organic gardening by USDA; Certified organic means no synthetic chemicals
  • Contains Jobe’s Biozomethe proprietary microorganism archaea that aggressively breaks down material for faster results
  • Jobe’s Biozome improves soil conditions, helps resist disease, insects, and drought during the growing season
  • Easy pour bag; Guaranteed analysis: (4-4-4) 1.5 pound resealable bag, (4-4-4) 4 pound bag, (4-4-4) 16 pound bag

Jobe’s Organics 09524 Purpose Granular Fertilizer is old-school fertilizer that comes in a bag of 16 pounds. It may be the best organic lawn fertilizer for most homeowners. However, it can be used for plants, flowers, trees, shrubs and so much more. It is certified by the USDA and it is completely organic, meaning there are no artificial compounds inside. One of the main advantages is Jobe’s Biozome. It is a specially developed microorganism archaea with the purpose of breaking down the nutrients quickly and providing faster absorption.

The analysis is 4-4-4. Overall, the fertilizer will boost the health of the plants by improving the soil nutrient levels. This is indirectly linked to better immunity versus insects and diseases but also higher resistance to drought during the warm months. We must add that the package is available in multiple options. We tested all-purpose which is obvious. Others are more specific. They are made for specific plants


  • Jobe’s Biozome is excellent
  • Promote immunity and drought resistance
  • For all plants and special versions for special plants
  • USDA certified


  • Complicated to use
  • Bad odor

EarthPods Premium Indoor Plant Food

EarthPods Premium Indoor Plant Food – Easy Organic Fertilizer Spikes – 100 Count – All Purpose (Great for Indoor Houseplants + Outdoor Container Flower Gardens, Ecofriendly)
  • CONCENTRATED PREMIUM ALL PURPOSE ORGANIC PLANT FOOD — Supports robust root growth, strong stem development, enhances leaf color vibrancy, creates rich loamy soil over time for all your indoor & outdoor plants
  • NO MESSY LIQUIDS / NO CONFUSING MEASURING SPOONS / NO STINKY SMELL — 1 tube = 100 EarthPods pre-measured plant fertilizer capsules (a 5-year supply for a single special houseplant or use on big collection of indoor house plants)
  • SO FAST & EASY TO APPLY — Push 1 EarthPod all the way into the root zone near the center of your plant, then just water! (EarthPods will break down & slowly release nutrients direct to roots where it counts)
  • PROPRIETARY FORMULA FOR SUPERIOR RESULTS — Slow release fertilizer robust with a large variety of organic plant nutrients, trace minerals, soil life & humates, all in a form immediately available for plant uptake
  • ECO FRIENDLY & COMPACT — Tube stores easily on your kitchen shelf + recycle the empty paperboard packaging printed with soy inks when done (EarthPods are pet, child, eco-friendly, vegan + 100% sustainably made in the USA)

EarthPods Premium Indoor Plant Food comes from Earthworm Technologies brand and is made to look like a pill. These pills will be inserted into the soil and watered. Once done, they will start releasing healthy nutrients to the soil which will be absorbed by plants. Those nutrients provide better stem development, faster and more robust growth, and also boost the leaf color. Other benefits include better immunity to diseases and bacteria, better drought resistance and so much more.

In a single tube, you get 100 pods called Earth Pods. They will be sufficient for 5 years of regular use for a single plant. Of course, we all have multiple plants so this period will be significantly shorter. There are 12 different options available. You can choose one that matches the plants you have at home. There is no bad odor here and you can recycle the tube once it is empty. This right here may be the best indoor plant fertilizer for most people.


  • Appealing to use
  • Massive package
  • Eco-friendly package
  • No bad odor


  • Expensive
  • Sensitive pods

Jobes 5001T Houseplant Plant Food Spikes

Jobe's 5001T Houseplant Indoor Fertilizer Food Spikes, 50 Pack
  • Pre-measured time-release plant fertilizer spikes nourishes at the roots; Fertilizer for indoor plants
  • Easy to use fertilizer spikes; No wasteful runoff, no mess, hazards or smells
  • Continuous supply of nutrients below the surface, where the active roots are growing
  • Jobs spikes feeds for 2 months; Provides plants with continuous slow-release nourishment at their roots
  • Guaranteed fertilizer analysis: (13-4-5) 50 spikes per package

Jobes 5001T Houseplant Plant Food Spikes is the last option on our list. When paired with the best soil for herbs, you can get impressive results. These are spikes that have to be inserted into the soil, next to the plant and watered. Once done, they will start releasing healthy nutrients to the soil, and the plant will start to flourish. There are 50 spikes in the package and the value for money was average. However, 25 spikes are now free in the package which makes this an appealing choice.

The analysis of the spikes is 13-4-5 and can be used for all plants indoor. They are 100% safe and they are very popular these days. We tested them into real life and we had only positive results to share with you. Sadly, there are no a lot of details from the manufacturer about this fertilizer. We hope this will change any time soon.


  • Large package
  • 25 free spikes
  • Versatile and easy to use
  • Great nutrients


  • Lack of details from the manufacturer
  • Poor customer support

What To Look In The Best Fertilizer For Indoor Plants

What is the best fertilizer for indoor plants? It is the one you can find easily, use it and get amazing results. For that, you need factors or parameters we actually use while testing the aforementioned products. Now, we will share them with you and hopefully help you in finding the best choice.

Type of a fertilizer

Best organic fertilizer for vegetables varies these days and we can see three main types. Each one has its own list of pros and cons and each one is applied separately. Let’s explain to them.

  • Spikes or tablets

Spikes or tablets will be inserted into the soil, next to a plant. Once done, they will start dissolving and providing nutrients. However, they must be replaced at a precise time, as specified on the box.

  • Granular

It is the oldest type and still one of more preferable. It is the best option when you are planting plants into the pots. The nutrients will be absorbed slowly. Just the way plants like it. However, for indoor purposes, this may be paired with a bad odor.

  • Liquid

This fertilizer will be mixed with water and then applied to the plants. A good side is simplicity and the fact you have precise control on how much fertilizer you have applied. A bad thing is that you must not forget to add it to the water, and you must follow the specific rules.


A fertilizer that is certified tells you a lot of things. First of all, it is safe for plants. Secondly, it contains all the nutrients as advertised and it is a great option for the plant it is made for. For organic fertilizers, this also means that they do not contain harmful chemicals or any artificial compound. The same applies to the best potting soil for herbs.

Nutrients inside (numbers on a bag)

You may have seen an NPK on the plants and then three numbers. The example is 15-4-8. The NPK stands for nitrogen, phosphorus, and potassium (its symbol is the letter K). What this simply means is that there is 15% nitrogen, 4% of phosphorus, and obviously 8% of K or potassium. Plants need all three minerals but you can choose which variation to get.

Ideally, you will conduct a soil test. Then you will use the best natural fertilizers for that soil, which contain nutrients that are depleted in the soil.

Size of a package

More plants need more fertilizer, so you will need a larger package. We believe that getting a larger package instantly is a much better option than getting a smaller one and then adding a second package. By using this trick, you will make sure that the plants don’t stay without nutrients at any given moment.


Are you looking for the best organic fertilizer for tomatoes or some other plant? Most fertilizers come in multiple options. Some are made for generic purposes, while others are made for a specific plant type. Consider this and try not to make a mistake.


  • What is fertilizer?

Fertilizer is a set of vitamins and nutrients plants need. It is equivalent to multivitamin tablets people can take. It is essential for the proper growth of the plants and better health.

  • What NPK stands for?

NPK refers to nitrogen, phosphorus, and potassium. The number next to it refers to the percentage of these ingredients in the fertilizer. For example, nitrogen makes the plants green, phosphorus boosts the root growth while potassium keeps plants immune to diseases.

  • Is a soil test needed?

Yes and no. If you are in a hurry, you can get any fertilizer for the plant you have. But, if you want to do it properly, you will need to conduct a test of the soil, find which nutrients are lacking and get fertilizer, which is rich in those nutrients specifically. Add the best organic potting soil to the equation and you will get the best results.

  • Do all plants need fertilizer?

Yes, all plants do need fertilizer but of different types and at different times of a year. You will need the best fertilizer for raspberries, the best for vegetable and the best for flowers to get the biggest and healthiest plants.

  • How often do I need to add fertilizer to the plants?

The time frame will be specified on the box. Some fertilizers need to be added every week. Others need to be added after 60 days during winter and after 30 days during summer. In general, liquid fertilizers need to be added sooner, while spikes and tablets need to be replaced after a longer period of time.

  • Do outdoor plants need fertilizer as well?

Yes, outdoor plants do need fertilizer as well. However, in this case, scenario we do not recommend pills and spikes. They are ideal for small plants in a controlled environment. For outdoor purposes, we recommend liquid or granular fertilizers.

  • Can fertilizer burn the plant?

Usually, this isn’t the issue. However, if you apply too much fertilizer to a plant, you can kill it. Always follow the instructions on the box. Adding too much fertilizer won’t have any positive effect on the plant.


What is the best fertilizer for indoor plants? Our answer is Miracle-Gro Water Soluble All Purpose Plant Food. Reasons are easy to apply to the plants, offers all major nutrients, and can be used on all plants. It is a safe, reliable, and effective method to boost the health and productivity of your plants.

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