Model # 100508616

Internet #203192757

Store SKU #910174

Espoma 6 lb. Soil Acidifier
0050197030069

Espoma

6 lb. Soil Acidifier

  • Organic soil acidifier turns hydrangeas blue
  • Use on potted plants, flowering plants, in the garden and more
  • Lowers pH levels for acid-loving plants
$10.28 /each

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Product Overview

Espoma Organic Traditions 6 lb. Garden Sulfur Soil Acidifier is an all-natural mineral that can be used to lower the pH of your soil or to provide plants with sulfur, a nutrient that promotes growth and dark greening. It will also turn hydrangeas from pink to blue.

  • Use as a soil amendment to lower the pH of alkaline soil
  • Use to provide plants with sulfur to encourage growth and dark greening
  • Use on hydrangeas to turn them from pink to blue
  • Organic ingredients for natural soil conditioning and feeding
  • Low salt index helps prevent it from burning your plants

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Customer Questions & Answers

6 lb. Soil Acidifier
6 lb. Soil Acidifier

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This question is from 6 lb. Soil Acidifier
 
3 answers

Can this be applied with fertilizer?

This question is from 6 lb. Soil Acidifier
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TX
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February 19, 2016
Soil test came back as 7.5% ph or higher. St Augustine is not growing well and not green whatsoever. Can this be applied after a 15-5-10 application (at same time)?
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Asked by
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June 15, 2016
Answer: 
Very likely your 15-5-10 product has some sulfur in it. You can double check it by looking on the back label where it would probably be listed as SO4 in the ingredients listing. It is frequently between 2% and 4%. If you find that to be the case, I would suggest you wait about 4 weeks after the fertilizer. You would not want to apply too much at one time because that could lower the ph too much. Most Read More
Very likely your 15-5-10 product has some sulfur in it. You can double check it by looking on the back label where it would probably be listed as SO4 in the ingredients listing. It is frequently between 2% and 4%. If you find that to be the case, I would suggest you wait about 4 weeks after the fertilizer. You would not want to apply too much at one time because that could lower the ph too much. Most grasses want between 6.5 and 7.0 ph. Read Less
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April 29, 2016
Answer: 
yes, most definitely
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Phoenix AZ
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March 13, 2016
Answer: 
Yes
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This question is from 6 lb. Soil Acidifier
 
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How and when to use it?

This question is from 6 lb. Soil Acidifier
Asked by
Eagan, mn
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January 14, 2016
I was told to be careful with fertilizing plants for the first year they are planted but this product did not seem to be fertilizer, can I use it to amend the soil when I plant the shrub or I should wait and mix this in a soil later on, I intend to use it planting Hibiscus this coming spring and also possibly mix it in a soil where I planted Rhododendron. Our soil is a clay but I already amended it with garden and top soil, compost and leaves and sand.
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Asked by
Texas
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June 15, 2016
Answer: 
Have you tested the ph of the soil? Your hibiscus prefers a ph fairly close to neutral or slightly acidic, meaning a ph of between 6.5 and 7.0. If you do not have very alkaline soil, say 8.0-9.0, it would be a good idea to test before using the sulphur on it. For the best health of the hibiscus, make sure the soil is well drained (you mentioned the soil was clay). Hibiscus like to be well drained. Read More
Have you tested the ph of the soil? Your hibiscus prefers a ph fairly close to neutral or slightly acidic, meaning a ph of between 6.5 and 7.0. If you do not have very alkaline soil, say 8.0-9.0, it would be a good idea to test before using the sulphur on it. For the best health of the hibiscus, make sure the soil is well drained (you mentioned the soil was clay). Hibiscus like to be well drained.
However, your friend the Rhododendron loves acid soil and by that I mean 4.5 ph. He will be very happy to have sulphur to amend his living conditions if he is not living in a pine forest. The lower the ph, the easier it is for him to get the nutrients he needs from the soil.
When using sulphur, it is almost always best to test the soil first. You can really hurt your friends in the garden if you overuse it. Also, if you want to use it at planting, follow the package directions for doing so.
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April 29, 2016
Answer: 
You can water it in or mix it in soil before or after planting. Not critical for when. You should check your soil's pH before doing the adding of. The container should give a good estimate how much it takes to lower your pH for set amount of soil. If not, just sprinkle 1-2 TBS per cubic ft.
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January 15, 2016
Answer: 
Hi Lara.
Thank you for your question.
Espoma is a great organic fertilizer and it can be mixed into the soil before planting. Since this is a fertilizer, you will need to follow the recommend application rates on the package.
Before adding this pH lowering fertilizer, it would be a good idea to check the pH of your soil since you have already added your soil amendments.
If your pH is neutral, it may Read More
Hi Lara.
Thank you for your question.
Espoma is a great organic fertilizer and it can be mixed into the soil before planting. Since this is a fertilizer, you will need to follow the recommend application rates on the package.
Before adding this pH lowering fertilizer, it would be a good idea to check the pH of your soil since you have already added your soil amendments.
If your pH is neutral, it may be better to add a general fertilizer such as Espoma All Purpose Organic Fertilizer or Espoma Rose Tone for Roses and other Flowering plants that promotes flowering.
Please let us know if we can be of further assistance.
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This question is from 6 lb. Soil Acidifier
 
3 answers

How many "cups" of product are in the package?

This question is from 6 lb. Soil Acidifier
Asked by
Detroit, Michigan
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December 25, 2015
In the instructions for using the product, it says to add 1-1/4 to 2-1/2 cups per blueberry plant. How many cups are in the 6 pound bag?
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April 29, 2016
Answer: 
When it comes to weight, you can't use the formula for liquids in general, such as 2 cups = 16 oz. That's liquid weight and not dry weight. It all depends on the density of the granules or powder or whatever else it may be that will dictate what the weight comes out to per cup. Your best bet is to pour out the bag into cup measurements, using a 2 or 4 cup utensil, and see how many cups it does in total. Read More
When it comes to weight, you can't use the formula for liquids in general, such as 2 cups = 16 oz. That's liquid weight and not dry weight. It all depends on the density of the granules or powder or whatever else it may be that will dictate what the weight comes out to per cup. Your best bet is to pour out the bag into cup measurements, using a 2 or 4 cup utensil, and see how many cups it does in total. Or if you have used some already, try to determine say, a half a bag and use the 3lbs left as how many cups it makes. Then you'll know how much each cup weighs thereafter. Read Less
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Phoenix AZ
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March 14, 2016
Answer: 
1lb =2cups....6lbs=12cups
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Phoenix AZ
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March 13, 2016
Answer: 
1lb = 2 cupfulls
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This question is from 6 lb. Soil Acidifier
 
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can I use it on crepe myrtle trees and gardenia plants

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July 9, 2016
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California
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July 10, 2016
Answer: 
Yes you can. Although it will be the most helpful for your gardenia plants. The myrtles aren't picky about the pH as much. It can be alkaline, neutral or acidic for myrtles. With the exception of the "Pink Floyd" type of myrtle tree. That likes more acidic conditions.
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July 10, 2016
Answer: 
Yes you can. It can be very beneficial for both of those. The crepe myrtle tree isn't really picky on this subject though. Whether it be acidic, neutral, or alkaline, they would do well. There is an exception, if it's the 'Pink Floyd' type, than it likes more acidic conditions. But those trees are harder to find when buying, usually. As far as Gardenias, yes definitely. Try to keep them between 5.0 - Read More
Yes you can. It can be very beneficial for both of those. The crepe myrtle tree isn't really picky on this subject though. Whether it be acidic, neutral, or alkaline, they would do well. There is an exception, if it's the 'Pink Floyd' type, than it likes more acidic conditions. But those trees are harder to find when buying, usually. As far as Gardenias, yes definitely. Try to keep them between 5.0 - 6.5. Read Less
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Customer Reviews

6 lb. Soil Acidifier is rated 3.9 out of 5 by 36.
Rated 2 out of 5 by from Well... Normally instead of using this product to acidify your soil, you would use sulfur crystal... Well... Normally instead of using this product to acidify your soil, you would use sulfur crystals. This was the only thing I could find anywhere near me, unfortunately. To drop the pH down by one, it takes multiple bags (yes, 12 lbs of this does what about 1-2 lbs of sulfur does), and around six months. I hope it works; it is too soon to see the results. I'm sure it will do...something. However, it would be much cheaper just to buy new compost and forget this stuff altogether.
Date published: 2016-12-29
Rated 5 out of 5 by from Great product. Did exactly what it daid it would do. Great product.
Date published: 2016-09-20
Rated 4 out of 5 by from great help x plants ideal product x keep plant in good health and shape
Date published: 2016-10-05
Rated 5 out of 5 by from Patience pays off when lowering pH I've read a few reviews here commenting on how long it takes for the product to work. I know the feeling, but I encourage you not to over-do it. It takes time for soil microbes to convert elemental Su into sulfuric acid; it won't happen at all at temps over 50 F and it can take a few months to work once it is over 50 F (it takes about two years to convert completely). It's an organic process, not a chemical reaction, so it's slow. BUT - once the pH is lowered, it will stay that way for years to come and will require little further effort to maintain it that way - so it's not a good idea to use 2-3x more than what you're trying to achieve. The pH scale is logarithmic, a 5 being ten times more acid than a 6, so acid-loving plants such as blueberries (pH range 5.5-6.5) might tolerate some overduing it, but a lot of plants that prefer a more modest pH range of about 6-6.5 won't. It's always easier to add more if needed; it's a lot harder to take it out again if you make it too acidic. Remember to always get a soil sample before using it - a helpful product to get is a soil pH tester; it's faster and more convenient than going to the extension office (The Home Depot carries several types from Burpee). A few tricks to accelerate the process - mix Epsoma with compost and work it into the soil around the drip line or poke holes as another reviewer suggested and fill it with a mixture of compost and Epsoma soil acidifier. Get the soil acidifier under your mulch, in contact with the soi, and keep it moist. Compost works well to encourage worms to distribute it for your from there; without compost, you'll tend to wind up with some areas that are extremely acidic and other areas that are almost neutral. It's also helpful to pair Epsoma soil acidifier with iron sulphate, such as Ironite. Iron sulphate will get the pH down quickly while the Epsoma (elemental sulphur) is working and it will also increase the iron in your soil, making your acid-loving plants more tolerant of higher pH soil until the pH is ideal. Just like it says on the package, it's safer than aluminum sulphate, which adds heavy metals to your soil, doesn't last and doesn't lower the pH by much (the only advantage being it works fast). Epsoma works and it works well - you just got to know what you're doing, not overdo it (hard to do), and have some patience.
Date published: 2014-03-17
Rated 5 out of 5 by from Hydrangeas turned to blue in just a week Surprised at how effective this product worked. Just one application and my hydrangeas were turning from pink to purple to blue.
Date published: 2016-06-28
Rated 5 out of 5 by from Got the job done Bought this to make our pink hydrangea flower change to blue. Worked great!
Date published: 2016-05-10
Rated 5 out of 5 by from WORKED BEAUTIFULLY I use a service to fertilize my garden. They do an excellent job but not for plants that need acid soil. My wife objected to the fact that our gardenia had very few and very poor flowers. I set out to buy garden sulphur but couldn't figure out what I would do with 20 pounds of it so I settled for soil acidifier with which I was unfamiliar. The results were amazing. It's been about 2 weeks and the sad looking yellow leaves are green and there are blooms and lots of buds.
Date published: 2016-06-09
Rated 5 out of 5 by from 6 lb. Soil Acidifier 6 lb. Soil Acidifier works well to lower pH of our soil to enhance blooming and color of acid loving plants
Date published: 2016-05-31
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