How Epsom Salt Can Help Your Hostas Thrive

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If you’re a fan of gardening, there’s a good chance you’ve heard of Epsom salt. This mineral compound has long been used in gardens as a soil amendment and fertilizer, and its benefits for hostas are undeniable. In this article, we’ll dive into the details of how Epsom salt can help your hostas thrive.

What is Epsom Salt?

Epsom salt is a naturally occurring mineral compound that’s made up of magnesium, sulfur, and oxygen. It’s named after the town of Epsom in Surrey, England, where the compound was first discovered in the 17th century. Epsom salt is most commonly used in baths to soothe sore muscles, but it also has a variety of uses in the garden.

The Benefits of Epsom Salt for Hostas

Hostas are a popular perennial plant that’s known for its lush, green foliage. However, like any plant, they require certain nutrients to thrive. One of those nutrients is magnesium, which is essential for healthy plant growth.

Here are some of the ways that Epsom salt can benefit your hostas:

Improved Nutrient Absorption

When your hostas are lacking magnesium, they may fail to absorb other essential nutrients like nitrogen and phosphorus. This can result in stunted growth, yellowing leaves, and poor overall health. By adding Epsom salt to the soil, you can help your hostas absorb these nutrients more effectively, leading to healthier plants.

Enhanced Foliage Color

Magnesium is also crucial for chlorophyll production, which is what gives plants their green color. If your hostas are lacking magnesium, their foliage may appear yellow or pale, rather than the vibrant green you’re hoping for. By adding Epsom salt to the soil, you can help your hostas produce more chlorophyll, resulting in richer, more vibrant foliage.

Better Disease Resistance

Magnesium plays a role in plant immunity, helping to ward off pests and diseases. By ensuring that your hostas have plenty of magnesium, you can help them resist common plant diseases like powdery mildew and leaf spot.

How to Use Epsom Salt on Hostas

Using Epsom salt on your hostas is incredibly easy. All you need to do is mix a tablespoon of Epsom salt into a gallon of water and apply it to the soil around your hostas. You can use this solution once a month during the growing season to keep your hostas healthy and vibrant.

It’s important to note that while Epsom salt is beneficial for hostas, it’s not a magical solution that can fix all problems. It’s still important to ensure that your hostas are in the right growing conditions, including adequate sunlight, water, and soil quality.

FAQs about Epsom Salt for Hostas

Can I use Epsom salt on other plants?

Absolutely! Epsom salt is beneficial for a variety of plants, including roses, tomatoes, and peppers.

Will Epsom salt harm my hostas if I use too much?

While Epsom salt is generally safe to use on hostas, using too much can cause problems. Overuse of Epsom salt can lead to a buildup of magnesium in the soil, which can interfere with the absorption of other nutrients. To avoid this, stick to using Epsom salt once a month during the growing season, and be sure to follow the recommended dosage.

Where can I buy Epsom salt?

Epsom salt is widely available at most garden centers and home improvement stores. You can also purchase it online from a variety of retailers.


If you’re looking for a natural way to improve the health and vitality of your hostas, Epsom salt is a great option. By providing essential nutrients like magnesium, you can help your hostas produce better foliage, resist diseases, and thrive in your garden. Just be sure to follow the recommended dosage and use it in conjunction with other best gardening practices.


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