Variety of healthy indoor plants in pots

Plants

in depth review: the best plant food for indoor plants

By Rosemary Thorne

Published: 27 Feb 2025

My Own Jungle, My Own Mistakes

Let's be honest, my thumb isn't exactly green. I've killed more houseplants than I care to admit. It's a graveyard out there, a silent testament to my horticultural ineptitude. But I'm stubborn. And I really, really wanted a thriving indoor jungle. So I started researching—obsessing, really—over plant food. I tried everything from expensive organic concoctions to the cheap stuff from the supermarket. Some worked…sort of. Others? Let's just say my plants staged a dramatic, wilting protest.

That's when I realized something: there's no one-size-fits-all solution. Finding the right plant food is key, and it's way more complicated than I initially thought.

a collection of dead and thriving indoor plants

a collection of dead and thriving indoor plants | Image: Supplied

Deciphering the Jungle of Plant Food Options

The world of plant food is, frankly, bewildering. There are liquid formulas, granular options, slow-release pellets… it's enough to make your head spin! And then there's the jargon: NPK ratios, micronutrients, chelates… What does it all mean? Well, let's break it down. NPK refers to the main nutrients: Nitrogen (N), Phosphorus (P), and Potassium (K). These numbers indicate the percentage of each nutrient in the food. Micronutrients are essential minerals that plants need in smaller quantities. Chelates help plants absorb these nutrients better. See? Not so scary after all! But choosing the right ratio depends entirely on the type of plant you have. A flowering plant will need different nutrition than a leafy green, for instance.

different types of indoor plant food

different types of indoor plant food | Image: Supplied

The Top Contenders: A Head-to-Head Comparison

After months of trial and error (and many casualties), I've narrowed down my top picks for the best plant food for indoor plants. I've tested these myself, and these are the results. Note: I'm not paid to endorse any of these, I just really like the results!

  • FoxFarm Ocean Forest Potting Soil: This isn't technically 'plant food' but rather a soil that is rich in nutrients and provides a great foundation for healthy growth. This is what I use, and my plants have never looked healthier, though I still supplement with liquid fertilizer.
  • Dyna-Gro Grow: A balanced liquid fertilizer suitable for most indoor plants. It's easy to use and provides consistent results. I found the results to be impressive, and the plants seemed to respond really well.
  • Miracle-Gro All Purpose Plant Food: A popular and widely available option. It's reliable, but not the most high-end formula. It works, just fine, it's really more about convenience for me.

Important Note: Always follow the instructions on the product label. Over-fertilizing is just as harmful as under-fertilizing!

comparison chart of different indoor plant foods

comparison chart of different indoor plant foods | Image: Supplied

Beyond the Basics: Understanding Your Plants' Needs

Even with the best plant food, your plants won't thrive if you don't understand their individual needs. Different plants have different preferences. Some prefer more frequent feedings, while others do better with less. Some need acidic soil while others need alkaline soil. You need to research that individually to make sure you're caring for your plant's unique needs. Pay attention to your plants! Learn to recognize signs of nutrient deficiency (yellowing leaves, stunted growth) and adjust your feeding schedule accordingly. It's all part of the fun, and the learning curve.

closeup of healthy indoor plants

closeup of healthy indoor plants | Image: Supplied

My Indoor Jungle: A Success Story (Finally!)

I won't lie, it's been a journey. But thanks to the right plant food and a better understanding of my plants' needs, my indoor jungle is finally thriving! I still make mistakes, but I am so much better at it now, and I have my favorite plant foods to thank for it. I'm so happy with the way things are turning out! And you know what? Seeing those lush green leaves is incredibly rewarding. So go ahead, experiment, learn, and enjoy the process of nurturing your own little green oasis. You might even surprise yourself!

a lush indoor jungle with various plants

a lush indoor jungle with various plants | Image: Supplied

The love for plants is a love for life.

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