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🍅 Grow Bold, Taste Better — The Nightshade Nutrient Revolution
Greenway Biotech’s Tomato Fertilizer 4-18-38 is a professional-grade, water-soluble powder designed specifically for nightshade crops like tomatoes, peppers, and eggplants. Featuring a high potassium formula to boost fruit size and flavor, it includes chelated micronutrients for superior nutrient availability across pH 4-9. Perfect for hydroponic and soil applications, it dissolves completely without clogging irrigation systems. Independently tested and CDFA-registered, this 2 lb powder ensures safe, effective feeding for bigger harvests and longer shelf life.











| ASIN | B0134CAZTG |
| Best Sellers Rank | #82,910 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #1,800 in Garden Fertilizers |
| Brand | Greenway Biotech, Inc. |
| Brand Name | Greenway Biotech, Inc. |
| Coverage | Full |
| Customer Reviews | 4.5 out of 5 stars 171 Reviews |
| Item Form | Powder |
| Item Weight | 2 pounds |
| Liquid Volume | 2 liters |
| Manufacturer | Greenway Biotech, Inc. |
| Mixing Ratio | 1669.1:1 |
| Model Number | 7.01749E+11 |
| Number of Items | 1 |
| Part Number | 7.01749E+11 |
| Specific Uses For Product | Hydroponic,Hydroponics |
| Target Species | tomatoes |
| UPC | 701748873948 |
| Unit Count | 32 Ounce |
P**N
Tomatoes are in constant need of nourishment
The Biotech product is water soluble and can be applied in a dedicated pump up sprayer. Tomatoes have a relatively short growing season and are in constant need of replenishing nutrients and trace minerals to support such rapid growth and prolific fruit production. The NPK balance of the Biotech product ensures you do not get more N than P and K. Nitrogen is best applied as a Calcium Nitrate about every three weeks to help with growth as wells as prevention of blossom end rot due to calcium deficiency. The P and K help with fruit production and root development and are essential to producing a good crop.
G**A
Absolutely fantastic fertilizer.
I run my chile pepper plants with 400 ppm amalgam of this product plus cal nitrate and mag sulfide. Fantastic lush green growth as well as forming fruits. Awesome! Will buy again when I run low.
A**.
Great results
I’ve had great results utilizing this as a foliar feed. I also plan on doing a hydroponic system and will be utilizing it there as well.
M**N
Seems to be doing the job
Never have tried to grow Tomatoes without soil before. The plants seem to be doing well and are growing and producing buds. Hoping to see tomatoes set on the vines soon.
B**B
Works
Good stuff.
W**E
Very concentrated.
I recently switched to this for its lower nitrogen and better potassium and phosphorous ratios for my hydroponic tomatoes and other vegetables. Within 3 days the Romain brightened considerably and the collards doubled in size while those in the ground fertilized with Miracle Grow only marginally grew. In addition it requires only a fraction of the amount. My tank requires 6 tablespoonful for regular concentration while this requires less than one.
A**Y
Awesome fertilizer blend!
This 4-18-38 fertilizer is the same as the “hydroponic masterblend fertilizer” but I use it on my non-hydroponic super hot peppers and it’s a great fertilizer that I use every other day to water them with. Makes those plants grow incredibly healthy so I would definitely buy again when I run out which would be a while lol
T**M
Simply Amazing!
By far the best tomato/ general use fertilizer I've used. Look at that growth! It only took 6 weeks for these 2 seedlings to grow over 5 feet tall. And I have easily over 100 flowers, half of them have started to fruit.
Trustpilot
3 weeks ago
1 month ago