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4-18-38 Complete Combo Kit Fertilizer Bulk (25 Pound Kit)

4.8 4.8 out of 5 stars 636 ratings
Amazon's Choice highlights highly rated, well-priced products available to ship immediately.
Amazon's Choice in Garden Fertilizers by MasterBlend

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Purchase options and add-ons

Brand MasterBlend
Item Weight 25 Pounds
Item Form Powder
Coverage 1
Liquid Volume 5 Liters

About this item

  • MasterBlend 4-18-38 Master Kit (3 Separate Components in correct amounts)
  • Contains MasterBlend 4-18-38, Calcium Nitrate 15.5-0-0, and Epsom Salt (Magnesium Sulfate)
  • Used by professionals worldwide for optimum plant growth
  • 100% Water Soluble for easy plant uptake
  • Packed by weight in a 1/1/0.5 ratio based off the MasterBlend recipe of 12g MB, 12g, CN, and 6g ES

Product details

  • Is Discontinued By Manufacturer ‏ : ‎ No
  • Product Dimensions ‏ : ‎ 12 x 12 x 6 inches; 25 Pounds
  • Item model number ‏ : ‎ MASTERBLEND-COMBO_25LB-KIT
  • Date First Available ‏ : ‎ April 29, 2017
  • Manufacturer ‏ : ‎ MasterBlend
  • ASIN ‏ : ‎ B071HFDVB2
  • Country of Origin ‏ : ‎ USA
  • Customer Reviews:
    4.8 4.8 out of 5 stars 636 ratings

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Customer reviews

4.8 out of 5 stars
4.8 out of 5
636 global ratings

Customers say

Customers like the value, quality and ease of mixing of the fertilizer. They mention that it's more economical than liquid, works great for all vegetables and that the instructions are easy to follow.

AI-generated from the text of customer reviews

36 customers mention36 positive0 negative

Customers are happy with the quality of the fertilizer. They say it mixes well, and everything thrives on it. They mention it works great for all their vegetables, but especially peppers and tomatoes. Some say it's affordable and worth the price.

"After the 1st Month of using, Tomato and Pepper plants are thriving. Can't say enough about this product and will be buying more when it's time. :-)" Read more

"My lettuce is growing well" Read more

"Has worked great for all my vegetables, but especially my peppers and tomatoes." Read more

"Can grow anything with this stuff, I use it for everything. Was looking into using jacks 3-2-1 but gave this a chance.. Glad I did...." Read more

14 customers mention14 positive0 negative

Customers find the fertilizer easy to mix. They mention it's simple to mix and lasts quite a while. They also say the instructions are easy to follow. Customers also say it'll provide the perfect blend for tomatoes and cucumbers.

"...veggies towers but it also great for my Kratky containers, It is simple to mix-up and lasts quite a while." Read more

"Easy to use. Kratky method and DWC buckets love it also. Have grown lettuce, tomatoes, and peppers." Read more

"...who used General hydroponic before this is by far the easiest nutrient you can mix and never see any deficiency on your plants as long as you can PH..." Read more

"This is easy to mix up in the desired ratio and works great for hydroponics. Has all the things your plants could need...." Read more

9 customers mention9 positive0 negative

Customers appreciate the value of the fertilizer. They say it's more economical than liquid.

"Very good price and fast shipping." Read more

"It works well. Worth the price" Read more

"A very affordable and a very good fertilizer for growing tomatoes and most other vegetables well. Very good yield on plants and vegetables...." Read more

"Easy to use and great prices" Read more

Lettuce loves this
5 Stars
Lettuce loves this
Easy to use. Kratky method and DWC buckets love it also. Have grown lettuce, tomatoes, and peppers.
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Reviewed in the United States on March 12, 2024
Reviewed in the United States on November 4, 2023
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Reviewed in the United States on March 2, 2024
Reviewed in the United States on September 25, 2023
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Reviewed in the United States on January 7, 2024
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5.0 out of 5 stars Lettuce loves this
Reviewed in the United States on January 7, 2024
Easy to use. Kratky method and DWC buckets love it also. Have grown lettuce, tomatoes, and peppers.
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One person found this helpful
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Reviewed in the United States on December 20, 2021
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4.0 out of 5 stars Peppers and tomatoes more robust.
Reviewed in the United States on December 20, 2021
Has worked great for all my vegetables, but especially my peppers and tomatoes.
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2 people found this helpful
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Reviewed in the United States on January 26, 2024
2 people found this helpful
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Reviewed in the United States on August 21, 2023
5 people found this helpful
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