Best Soil Acidifiers for Blueberries | 2020 Review

Blueberry Bushes

Blueberries are one of several plants that need an acidic soil environment (ideal pH between 4.5 and 5) in order to thrive and grow. If you need to make some adjustments to the soil before you start growing blueberries the consider the following soil acidifiers.

Product NameOur RatingKey Ingredients
Scotts Miracle-Gro 1750011 Water Soluble Acid-Loving Plant Food★★★★★Aloe Vera
Espoma UL30 Organic Soil Acidifier Fertilizer★★★★Elemental Sulfur & Gypsum
Down To Earth All Natural Acid Mix Fertilizer★★★★Feather meal, fish bone meal, alfalfa meal
J R Peters Jacks Classic No.1.5 17-6-6 Acid Special Fertilizer★★★★★-

Blueberry Soil Acidifier Features

It’s important to get the right kind of soil acidifier if you want the blueberry bushes to grow in an optimal environment. Here are some aspects to consider when you shop for a soil acidifier.

Soil Acidifier Application Type

There are a number of different ways to treat alkali soil conditions. For example, you can get it as an acid mix fertilizer to also provide the proper NPK ratios for your blueberry plants. It may also come in the form of a water-soluble liquid formula for fast application.

Slow-Release Application

In some cases, it may be important for the acid mix fertilizer to ccome in the form of slow-release pellets so you don’t “over-fertilize” the soil. Over-fertilization can cause a wide range of issues like root burn so consider how much nutrients the soil needs as well.

Organic Ingredients

Find a soil acidifier product that is made of organic ingredients. You may come across some soil acidifier products that are made of natural ingredients like kelp meal and fish bone meal.

Top Soil Acidifiers for Blueberries

Down To Earth All Natural Acid Mix Fertilizer

This all-natural fertilizer mix contains 5 pounds of 6-3-3 formula which will convert the soil to the acidic environment that a blueberry bush needs.

This acid mix fertilizer contains a wide range of natural ingredients like feather meal, alfalfa meal, zinc sulfate, and kelp meal. It’s a must have if you would like your blueberry plants to grow abundant foliage and bountiful fruits by the time harvest season comes.

Jobe’s Organics Soil Acidifier

This soil acidifier package contains the ideal formula for acid-loving plants like blueberries and hydrangeas. It’s OMRI listed for organic gardening so you don’t have to worry about it containing synthetic chemicals.

For application, you just need to mix the granules with the soil before the blueberry plants are planted.

Dr. Earth 802 Feet Acid Lovers Planting Mix

This well-balanced acid lovers planting mix can be used as a soil amendment for acid-loving plants like blueberries, gardenias, and evergreens. It contains a plethora of organic nutrients that will help your plants bear large, juicy blueberries.

Each pack contains about 1.5 cubic feet of soil amendment. It will work well for blueberries grown in both container and in the ground.

Soil Acidifying FAQ

How Do You Acidify Soil for Blueberries?

First, get a soil testing kit to determine what the pH level of the soil is. Once that’s determined, you can get the necessary soil amendment or acid mix plant fertilizer to turn the soil into the optimal pH condition (between 4.5 and 5).

When Should I Acidify the Soil for Blueberries?

It’s best to add the soil amendment before you plant the blueberries. After a period of time, you may need to replenish the acidity level of the soil to maintain the optimal pH level for the blueberry bushes. This is when a pH testing kit comes in handy.

Do Blueberries Like Coffee Grounds?

Coffee grounds are highly-acidic so they may seem like the extra boost that blueberry plants will need if the soil is too alkali. A 2016 study in the journal Urban Forestry & Urban Greening, however, disagrees and mentions that using spent coffee grounds can actually stunt a plant’s growth.

Sam at Organic Lesson

is the Founder of Organic Lesson. He started this site to share tips on using natural remedies at home when such options are available.