Magnesium sulfate is a multipurpose salt that is widely used in the garden: either as a fertilizer or as a weed killer. Yellow to brown colored leaves or needles in green plants indicate a magnesium deficiency, which can be treated with Epsom salts. In our guide we deal with the most important purchase criteria and some general aspects of sulfate. Some hobby gardeners wonder where to get magnesium sulfate. We also provide an answer to that.

Magnesium sulfate is a blessing, especially in the case of magnesium deficiency

Our recommendations

our recommendation
bleu & marine Bretania Natural Epsom Salts 3.5 Kg. Organic use. Promote the growth of crops, gardens and indoor plants.
To the product
Proportion of magnesium oxide 16 %
proportion of sulphur 32 %
application form Sprinkle/watering
contents 3.5kg
price/kg approx. EUR {PRICE/3.5}

With the magnesium sulphate from bleu & marine Bretania, everything is just right: the proportions of water-soluble magnesium oxide and sulfur are comparatively high. As a result, the Epsom salt works excellently - yellowish-brownish discolorations disappear - giving way to a rich green. Furthermore, you can get by with the 3.5 kilograms for a long time, but you don't have to keep an excessively heavy and bulky pack right away. In addition, almost all of the extremely enthusiastic reviewers on Amazon praise the very simple application. The Epsom salt can be sprinkled and then worked into the soil or easily added to the irrigation water. The manufacturer conveniently provides detailed information on how much magnesium sulfate makes sense per application. A really good product with a convincing price-performance ratio.

our recommendation
no details 20 KG Epsom salt fir fertilizer against tanning of the needles
To the product
Proportion of magnesium oxide 16 %
proportion of sulphur 13 %
application form sprinkle
contents 20kg
price/kg approx. EUR {PRICE/20}

Epsom salt from Grüner Jan earned second place - for two reasons: the high quality and the very low price per kilo. Compared to our test winner based on the basic features and reviews on Amazon, the proportion of sulfur is significantly lower. Nevertheless, the magnesium sulfate achieves the desired effect if you believe the descriptions of most customers.

our recommendation
Dehner Epsom salt, 5 kg, for approx. 100 square meters
To the product
Proportion of magnesium oxide 16 %
proportion of sulphur 13 %
application form sprinkle
contents 5kg
price/kg about {PRICE/5} EUR

Dehner's Epsom salt has practically the same properties as Grüner Jan's magnesium sulphate. In terms of quality, the two products don't seem to have much in common either. Most Amazon reviewers reported being happy with the magnesium sulfate. However, some critics define the salt as difficult to spread.

Purchase Criteria

purpose

If you want to use magnesium sulphate to remedy the magnesium deficiency of a green plant or to destroy weeds, you should buy it in fertilizer quality.

Note: Epsom salt is also available in food and pharmaceutical quality.

application form

Magnesium sulphate as a fertilizer is available in various application forms:

  • for spreading on and working into the ground
  • for dissolving in water
  • as a solution in a spray bottle for spraying directly on the underside of the leaves

composition

You have the choice between pure magnesium sulphate and fertilizers that contain Epsom salts along with a few other substances.

Our recommendation:

  • For acute treatment of a magnesium deficiency or when looking for a weed killer, you should rely on "pure" magnesium sulfate. Products with high levels of water-soluble magnesium oxide and sulfur are to be preferred.
  • On the other hand, a comprehensive product makes more sense as a long-term fertilizer solution - after all, your green plants need much more than "just" magnesium and sulfur.
our recommendation
Dehner conifer fertilizer, 2 kg
To the product

pack size

How Much Magnesium Sulfate Do You Need? Depending on the area of your garden or how large the area is that you want to treat with the Epsom salt, smaller or larger packs are available: the spectrum ranges from small one-kilo packs to heavy projectiles with five or even more kilograms.

tips

The analysis of the most popular products on Amazon shows that the larger the pack, the cheaper the kilo price for magnesium sulphate is.

frequently asked Questions

What is magnesium sulfate?

Magnesium sulfate or magnesium sulfate heptahydrate is naturally occurring Epsom salt. It is also known as Epsom salt because its existence was first discovered in a salt mine near the southern English town of Epsom. That was in 1824. Today we know that magnesium sulphate is beneficial to the health of both humans and green plants.

tips

Magnesium sulfate heptahydrate is the chemical name of Epsom salt. And here is the chemical structural formula: Mg[SO4] 7H2O.

What is the effect of magnesium sulfate?

As the name suggests, magnesium sulfate's primary purpose is to provide magnesium and sulfur to the living being that comes into contact with it. As a result, Epsom salts are able to correct magnesium and/or sulfate deficiencies in humans and plants.

Magnesium sulfate consists mainly of magnesium and sulfur. Both substances perform important tasks in the human body:

  • Magnesium regulates the activity of numerous enzymes. It is therefore jointly responsible for the smooth running of many metabolic processes in the body.
  • Sulfate, a naturally occurring sulfur compound, aids in digestion and helps flush toxins out of the body.

In green plants and conifers, a magnesium deficiency manifests itself in the form of an unsightly yellow or brown discoloration of the leaves or needles. Magnesium sulfate can help correct the deficiency symptoms naturally.

You can also kill weeds with magnesium sulfate and apple cider vinegar/vinegar.

Magnesium chloride or magnesium sulfate - what to take?

Depending on what you want to achieve, magnesium chloride or magnesium sulfate is more suitable. Magnesium chloride is composed of magnesium and chlorine (chemical formula: MgCl2). It is said to be the better form of magnesium intake for the human body, since magnesium chloride can apparently be absorbed and used more easily. So you won't make a mistake if you buy bath flakes with magnesium chloride instead of magnesium sulphate for your nice hot bath.

our recommendation
MRS magnesium flakes & magnesium flakes in the finest premium quality - 100% natural magnesium chloride flakes - ideal bath salt for a foot bath, full bath & against magnesium deficiency - 4 kg
To the product

Where and how is magnesium sulfate used?

The most important areas of application at a glance:

  • Bath additive (to compensate for a magnesium and/or sulfate deficiency and to alleviate skin diseases), absolutely avoid soap and foaming additives (restricts the effect of Epsom salt)
our recommendation
Nortembio Epsom Salt 6 Kg. Concentrated Source of Magnesium, 100% Pure Salt. bath and body care. E-book included.
EUR 20.95 To the product
  • as a medicinal laxative for constipation (usually taken orally)
our recommendation
Epsom salt magnesium sulfate 5kg - natural help with fasting and therapeutic fasting - laxative - liver cleansing
18.79 EUR To the product
  • as a fertilizer in the garden and on agricultural land

tips

Many people turn to oral magnesium supplements. The mineral is absorbed transdermally - i.e. through the skin - much better by the body than through the digestive tract. Therefore, if you can, it is better to regularly take a bath with Epsom salt than to swallow magnesium in tablet, capsule or powder form.

As garden specialists, we will now go into even more detail about the use of Epsom salts in the green living room. Exactly how you apply the magnesium sulphate depends primarily on which product you choose.

  • Epsom salt to sprinkle on and work into soil
  • Epsom salt for dissolving in irrigation water
  • Epsom salt solution in a spray bottle for spraying the undersides of the leaves

In any case, it is important to avoid an overdose of magnesium sulfate. "Less is more" is the motto. An annual amount of about 20 grams per square meter is sufficient for the Epsom salt to develop its effect.

What brands offer good magnesium sulfate?

The best-known brands for good magnesium sulphate in fertilizer quality include Dehner, Compo, Euflor, Grüner Jan and bleu & marine Bretania.

Where can you buy magnesium sulfate?

Depending on what exactly you intend to do with the magnesium sulfate, you should go to a specific facility to obtain an appropriate remedy for your needs.

  • Epsom salt as a bath additive is available in the drugstore, for example at DM or Rossmann.
  • Magnesium sulphate to relieve acute constipation is best obtained from the pharmacy.
  • You can find magnesium sulphate in fertilizer quality for the garden in hardware stores and garden centers.

Amazon has the right products for all areas of application.

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