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Bonide Garden Rich Aluminum Sulfate, 4 lbs. Ready-to-Use, Lowers pH in Home Garden, Compatible with all Soil Types

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4.6 476 ratings

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Brand	Bonide
Item Weight	4 Pounds
Item Form	Powder
Coverage	Medium
Liquid Volume	4 Liters

About this item

LOWERS SOIL PH - 5.0 is a suitable pH for many garden plants that thrive in acidic environments. Aluminum Sulfate helps lower soil pH to this target. We recommend using a soil tester for an accurate soil reading before application.
ACID LOVING PLANTS - Aluminum Sulfate is designed to lower soil pH for acid-loving plants such as Azaleas, Camellia, Gardenia, Hemlock, Holly, & more. It helps to turn Hydrangeas blue also.
ALL SOILS COVERED - Our Aluminum Sulfate works in all types of soil including sandy soil, loamy soil, & clay soil.
EASY TO APPLY - Blend this product into the soil, if possible, & water thoroughly after application. After at least two weeks, recheck soil pH. Reapply until the desired pH is reached.
APPLICATION CHART PROVIDED - The provided chart approximates the amount of Garden Rich Aluminum Sulfate needed to lower soil pH to 5.0 a suitable pH for many plants.

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From the manufacturer

Bonide Trusted Solutions for your home, lawn and garden

Unlock all that Bonide has to offer to meet all your plant care needs! From fertilizers and plant food to soil amendments and growth enhancers, we provide the essential nutrients and supplements for robust growth and vibrant blooms. We offer a diverse portfolio that tackles pest control & pruning solutions all the while ensuring precision and healthy plant maintenance!

Our Brands Also Include


Captain Jack's Nature-Inspired Solutions for Home and Garden	Revenge Home Pest Got Roaches? Got Ants? Got Bedbugs? Got Termites? Get Revenge!	KleenUP Weed & Grass Killer for your Home Garden	Repels All Trusted by Millions. Guaranteed Results.

Since 1926, Bonide has helped gardeners bring out the best in their lawn and garden with easy-to-use products designed for noticeably effective results. We continue to take a fresh approach to creating trusted solutions that help control nature’s ever-evolving challenges.

Product Description

Lowers soil pH for acid-loving plants like azaleas, camellias, gardenias, hemlock, holly, cedar, blueberry, rhododendron, dogwood, & turns hydrangeas blue. Includes easy to follow chart. Works in all soil types.

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Amazon.com Return Policy:Amazon.com Voluntary 30-Day Return Guarantee: You can return many items you have purchased within 30 days following delivery of the item to you. Our Voluntary 30-Day Return Guarantee does not affect your legal right of withdrawal in any way. You can find out more about the exceptions and conditions here.

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Instructions for Use (IFU) (PDF)

Top Brand: Bonide

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Important information

Safety Information

For adult use only. Keep out of reach of children. Avoid inhalation and direct contact with skin and eyes. If ingested, seek medical advice immediately and show the container or label.

Ingredients

Aluminum Sulfate

Directions

See label for full instructions

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Customer reviews

476 global ratings

How customer reviews and ratings work

Customers say

Customers like the effectiveness, appearance, and color of the fertilizer. They mention it works great for turning hydrangeas blue, adds some variety in their garden, and works fast. Some also say it's easy to place around their plants and that it's value for money.

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Effectiveness Appearance Color Speed Ease of use Value for money

38 customers mention "Effectiveness"38 positive0 negative

Customers are satisfied with the effectiveness of the fertilizer. They mention it works great for Blue Hydrangeas, tanning rabbit hides, and bringing down acidity in their soil. Some say it's easy to use and the results are gorgeous blooms.

"Works great in all my garden where I grow acid loving plants. I primarily purchaded this to amend the soil of my strawberry bed extension." Read more

"...In fact they turned a glossy hunter green and looked better than they ever had. Good stuff at an affordable price." Read more

"The product itself is fine, but storage is an issue unless you have something literally airtight...." Read more

"Easy to use and the results are in the gorgeous blooms" Read more

7 customers mention "Appearance"7 positive0 negative

Customers like the appearance of the fertilizer. They say it's beautiful, loved by their roses and azaleas, and adds some variety to their gardens.

"...In fact they turned a glossy hunter green and looked better than they ever had. Good stuff at an affordable price." Read more

"...It's also loved by my roses and azaleas. I barely dust around them every month or so. They love it!" Read more

"This arrived and the crystals are beautiful. Dissolves in water easily...." Read more

"...definitely adds some variety in our garden." Read more

7 customers mention "Color"7 positive0 negative

Customers are satisfied with the color of the fertilizer. They mention it has beautiful shades of blue and violet, and the color is deeper and brighter than ever. Some customers also say some hydrangeas are multicolored.

"...it around the bushes and watered it in and the color was deeper and brighter than ever!" Read more

"...to be blue; I'm happy to report that it is turning lovely intense shades of blue after it started to bloom about two weeks ago!..." Read more

"...i have different shades of purple and blue hydrangeas, and some are even multicolored. definitely adds some variety in our garden." Read more

"My plants FINALLY came back to life! Full and green" Read more

6 customers mention "Speed"6 positive0 negative

Customers are satisfied with the speed of the fertilizer. They mention it works fast and the delivery is fast.

"...Aluminum Sulfate can be used in organic setups and it's one of the fastest acting products...." Read more

"...I can tell this product works fast, but I used it in small amounts adding more as I went so it didn't burn my plants...." Read more

"Thank you for the beautiful product and fast delivery!" Read more

"Fast delivery. Product is what it is" Read more

5 customers mention "Ease of use"5 positive0 negative

Customers find the fertilizer easy to use and place around their plants.

"It took over a week to arrive. I found this very easy to place around my plants." Read more

"Easy to use and the results are in the gorgeous blooms" Read more

"...Very easy!" Read more

"Easy to use..." Read more

5 customers mention "Value for money"5 positive0 negative

Customers appreciate the value of the fertilizer. They mention it's good stuff at an affordable price.

"...Good stuff at an affordable price." Read more

"...charge until fully charged again, works beautifully and saved me a few hundred dollars not having to replace all these 12 volt car batteries I have...." Read more

"...Worked great. Cheap. Made life MUCH easier!" Read more

"Prompt shipping, decent quality, pretty good price." Read more

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Top reviews from the United States

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schlessmanwayne

It worked

Reviewed in the United States on May 17, 2024

Verified Purchase

Works great in all my garden where I grow acid loving plants. I primarily purchaded this to amend the soil of my strawberry bed extension.

One person found this helpful

Helpful

Amazon Customer

Reviewed in the United States on October 12, 2024

Verified Purchase

works

Helpful

GardenGirl

Used it on Blueberries

Reviewed in the United States on September 17, 2015

Verified Purchase

Worked like a charm on two necrotic blueberry bushes. The bag recommends the right amount depending on what you plan to use it on - such as potted plants or several individual plants in-ground or application on a large block of land - so it's relatively "user friendly". My blueberries are in giant containers so I used and amount suggested for that and after maybe 3 rains both plants greened right up. In fact they turned a glossy hunter green and looked better than they ever had. Good stuff at an affordable price.

12 people found this helpful

Helpful

Joyce Disbrow

Easy to use

Reviewed in the United States on July 24, 2024

Verified Purchase

I have several hydrangea plants in my yard. Researched care on line. This product was recommended for vibrant color enhancement. Just sprinkled it around the bushes and watered it in and the color was deeper and brighter than ever!

One person found this helpful

Helpful

Pauline

Sulfate

Reviewed in the United States on August 7, 2024

Verified Purchase

Bought to turn my hydrangeas back to blue. They were losing their color. It did work. Would recommend

Helpful

Yuriy

Worked better than I expected in organic indoor gardening

Reviewed in the United States on April 15, 2023

Verified Purchase

I grow medical Cannabis indoors in organic soil with organic nutrients and sometimes soil pH goes off balance and needs to be raised so i use Dolomite Lime powder and when it needs to be lowered I decided to give Aluminum Sulfate a try after doing some research I found out that Aluminum Sulfate can be used in organic setups and it's one of the fastest acting products. So I bought this 4 Lbs bag and didn't know how much to add to i started small at 2g per gallon of soil and after a few tries I was able to determine that the best ratio is 10g per 1 gallon of soil and i was able to lower the soil pH from 7.4 to 6.5 and my plants responded in a positive way and the deficiency went away after 5 days.
95% of deficiencies occur because of soil pH imbalance that's why it's very important to have the right products that work every time that you can rely on and this Aluminum Sulfate is 100% one of the products you can definitely rely on.

Happy growing 🪴🗣️💨

10 people found this helpful

Helpful

Gloria J

Didn’t get results

Reviewed in the United States on December 13, 2022

Verified Purchase

I didn’t see any response or results from the use of this product.

One person found this helpful

Helpful

Patricia Beck

Using this for my Hydreangas to make the flowers blue!

Reviewed in the United States on May 7, 2024

Verified Purchase

It took over a week to arrive. I found this very easy to place around my plants.

Helpful

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Bonide Garden Rich Aluminum Sulfate, 4 lbs. Ready-to-Use, Lowers pH in Home Garden, Compatible with all Soil Types

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