Best Soil Acidifiers for Hydrangeas | 2020 Review


Have plans to grow hydrangeas in your backyard? Before you start planting this beautiful flowering plants, it’s important to set up the yard soil correctly to set them up for success. One important requirement is for the soil pH to be on the acidic side.

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★★★★★-

Hydrangea Soil Acidifier Features

There are a couple of things to keep in mind when you shop around for a soil acidifier. It’s important to get the right type. Otherwise, you could cause more harm than good for the plants.

Type of Soil Acidifier

Soil Acidifier may come in a number of forms. For example, it may come as an acid mix plant fertilizer or it may come in the form of a soil amendment. The plant fertilizer version may help kill two birds with one stone if you are looking to replenish the nutrients and acidity level of the ground soil. The soil amendment type, on the other hand, may be more appropriate if you are starting from scratch.

Organic Ingredients

Pay close attention to the type of ingredients that the soil acidifier pack contains. Ideally, you are looking for a soil acidifier that doesn’t just boost the acidic level of the soil, but is also packed with important nutrients that the hydrangeas need to bloom beautiful flowers.

Pest and Weed-Free

Low-quality soil acidifier, especially those that come in the form of soil amendment, may potentially be infested with pests and weeds. When shopping online, we suggest paying close attention to the user reviews to determine if such concerns exist for a product.

Top Soil Acidifiers for Hydrangeas

Jobe’s Organics Soil Acidifier

This is an excellent soil acidifier for hydrangeas which comes in the form of a soil additive. The natural sulfur ingredient in the organic granules will quickly reduce the alkalinity of the soil for the hydrangeas to thrive.

This product is also OMRI listed for organic gardening so you don’t have to worry about the presence of synthetic chemicals.

Espoma GSUL6 Soil Acidifier

This excellent soil acidifier is packed with 6 pounds of high-quality soil amendment that will quickly lower the pH level for optimal plant growth. The main ingredients are elemental Sulfur & Gypsum.

It can also be used as plant food to replenish acidity levels. Lot’s of gardeners had success using this with blue hydrangeas.

Dr. Earth 802 1-1/2 Cubic Feet Acid Lovers Planting Mix

This acid-loving plant mix doesn’t just help with maintaining acidity levels in the soil. It also contains a rich mix of organic nutrients that hydrangeas need to bloom beautiful flowers. The nutrients are derived from ingredients like alfalfa meal and potassium sulfate.

For maximum plant, you should be looking to add this soil acidifier once every two month during growing season.

Hydrangea Care FAQ

How Do You Use Soil Acidifier for Hydrangeas?

Soil acidifier can be used before and during the planting of hydrangeas plants. To encourage the hydrangeas to bloom beautiful flowers, you will need the soil pH condition to be maintained at around 5.2 – 5.5. A soil test kit will help you measure and maintain this level.

Do Hydrangeas Like Sun or Shade?

Aside from maintaining an acidic soil pH condition, it’s also important for the hydrangeas to get plenty of sunlight. Ideally, you are looking for the plants to get full sun in the morning and partial shade in the afternoon. Partial shade throughout the day also works.

Are Hydrangeas High-Maintenance?

Hydrangeas are relatively low-maintenance plants. The hard work is getting them settled by making the soil condition is in the right state for them to grow. Once established, they will require little ongoing care to bloom the beautiful flowers.

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.