5 Fertilizers That’ll Make Your Tomatoes Grow Bigger, Juicier, and Better Than Ever

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Updated in October 2025 | By John

If you’ve ever grown tomatoes and ended up with sad, tiny fruits… you’re not alone. It’s frustrating, right? You water, you baby them, you even talk to them (don’t worry, we all do it). But without the right fertilizer? You’ll just end up with leafy plants and not much fruit to brag about.

So, let’s get real about what works. Below are 5 fertilizers that have helped gardeners—like real people, not just pro farmers—grow bigger, more delicious tomatoes at home. Ready? Let’s go.

What’s the 5 fertilizer that makes your tomatoes 🍅 grow bigger

1. Espoma Tomato-tone Organic Fertilizer

This one’s a fan favorite for a reason. It’s organic, gentle, and packed with all the nutrients tomatoes crave—especially calcium, which helps prevent blossom end rot (you know, those weird black spots on the bottom of the tomato).

Why it works:

  • Slow-release, so your plants get steady nutrients
  • Rich in calcium, magnesium, and sulfur
  • Safe to use throughout the growing season

Best time to use: Right at planting and once a month after that.


2. Dr. Earth Home Grown Tomato, Vegetable & Herb Fertilizer

Don’t let the fancy name throw you off—it’s easy to use and it works. Plus, it’s people- and pet-safe, which is great if you’ve got little hands or paws around.

What makes it shine:

  • Loaded with probiotics and beneficial microbes
  • Balanced NPK ratio: 4-6-3
  • Breaks down slowly but feeds deeply

Pro tip: Mix it right into the soil around the plant, not just on top.


3. Jobe’s Tomato Fertilizer Spikes

Spikes? Yep, you literally stick them in the ground. That’s it. They’re super beginner-friendly and perfect if you tend to forget weekly feedings (guilty!).

What you’ll love:

  • No measuring, no mixing
  • Feeds up to 8 weeks
  • Targets root zone directly

Downside? They don’t adjust easily mid-season if your plants need a change.


4. Fish Emulsion (Alaska Fish Fertilizer 5-1-1)

Okay, this one smells… like fish (because it is). But the payoff? Huge. It gives your tomato plants a nitrogen boost early on, which means bigger, stronger plants and better fruit production down the line.

How it helps:

  • Quick-release nitrogen for leafy growth
  • Great for early plant development
  • Can be mixed with water and sprayed

Warning: Don’t overdo it or you’ll get all leaf, no fruit.


5. Compost Tea (Homemade or Store-Bought)

If you’re into DIY or just want something super natural—this is gold. Compost tea boosts your soil health, which in turn, makes your tomatoes thrive.

Benefits include:

  • Adds beneficial microbes to your soil
  • Gently feeds plants without burning
  • Improves fruit size, taste, and plant resistance

How to use: Water at the base of your plants every two weeks.


Tomato Fertilizer Comparison Table

Fertilizer NameNPK RatioRelease TypeBest ForApplication Frequency
Espoma Tomato-tone3-4-6Slow-releaseAll-season supportMonthly
Dr. Earth Home Grown4-6-3Slow-releaseOrganic gardens, soil healthMonthly
Jobe’s Tomato Spikes6-18-6Slow-releaseLow-maintenance, consistent feedEvery 6–8 weeks
Alaska Fish Fertilizer5-1-1Quick-releaseEarly-stage growth boostEvery 2–3 weeks
Compost TeaVariesLiquidSoil enrichment and immunityBi-weekly

Conclusion

Tomatoes ain’t too picky—but they do love a little pampering when it comes to nutrients. Picking the right fertilizer doesn’t just help them grow bigger—it also gives you better taste, juicier texture, and fewer problems during the season.

So whether you’re all about organic or just want something that works, try one of these five and see the difference. Your summer salads, sauces, and salsas will thank you.

About The Author

Hi, I’m John, the creator of this site.
With years of hands-on gardening experience, I’m passionate about growing fresh fruits and vegetables and making gardening easy for everyone.
Here, I share tips, ideas, and inspiration to help you enjoy a thriving garden—no matter your skill level!