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Strengthen Your Soil with Agricultural Limestone

Agricultural Limestone for Your Garden SoilYou might take calcium supplements to strengthen your bones, but have you thought about giving a calcium supplement to your soil?

The calcium in agricultural limestone makes the cells of your plants healthier by strengthening their walls. This improves their stems and leaves as well as their root systems. It also helps them absorb and utilize sunlight more effectively.

One great use of limestone is to break up hard-packed clay soil. Many farmers and gardeners do this to improve their soil's drainage and aeration.

But the most popular use of limestone is to make soil sweeterthat is, less acidic.

What Tums Do for Your Stomach, Limestone Can Do for Your Soil

Though some plants are acid loving, soil that is too acidic usually spells problems because the high acid levels cause nutrients to become locked up and unavailable. At the same time, fertilizer added to acid soil is not well absorbed and valuable minerals like nitrogen end up washing away. What's more, too much acid kills beneficial bacteria that would otherwise work on the soil to enrich it.

Agricultural limestone is a time-honored solution used by generations of farmers and gardeners. Completely nontoxic, the calcium carbonate in limestone happens to be the active ingredient in Tums. So just as you might take an antacid made of calcium carbonate to neutralize stomach acid, when you add calcium carbonate in the form of limestone to your garden, it reduces the acid levels.

As the Tums commercial says, Concentrated relief that goes to work in seconds.

Soil Testing to Determine Soil AcidityAgricultural_Limestone

Just as you take Tums only when you have an acid stomach, you don't want to apply limestone if your soil doesn't need it. That's why it's best to test your soil.

These days soil testing is quick, easy, and inexpensive. You can get an inexpensive mini-tester that you stick in the ground whenever you need a reading. Within seconds it will tell you your soil's pH.

If you want an extensive soil test that will also tell you the levels of the various minerals in your soil, get in touch with the nearest Extension service, or contact a professional gardening or landscaping company.

What is pH?

The pH of your soil indicates how acidic or alkaline it is. Acidic soil has a pH lower than 5 while alkaline soil has a pH greater than 7. The ideal pH for most plants is somewhere in the middle.

Master gardeners fine-tune the pH of their soil depending on what they're planning to grow. To do this, consult a chart that shows the optimal pH for various plants.

Limestone to Break Up Clay Soil

An important but lesser known use of limestone is to break up hard-packed clay soil. This improves its drainage and aeration. All you have to do is apply the limestone to the surface of the soil and it will work its way in and break it up through a chemical reaction called flocculation.

healthy_soilWhat happens is that the calcium in the limestone interacts with the silicon in the clay and causes it to separate on a molecular level. This causes the clay to become less dense without any need for elbow grease.

Limestone: Inexpensive and Effective

Because limestone is so plentiful in the earth, it is one of the least expensive soil amendments available. We offer a 40 lb. bag of dissolvable limestone pellets that's enough for 4,000 square feet and it can be applied with any spreader. For smaller areas, we also carry six-pound bags that cover between 100–200 square feet.

If a professional soil test indicates you have a severe deficiency of magnesium as well as a need for calcium, go with dolomite limestone which is 50% calcium and 40% magnesium. Otherwise, we recommend plain old limestone, because it does the job and does it well.

Enjoy the spring and Happy Gardening from all of us at Garden Harvest Supply!

 

4 Responses to “Strengthen Your Soil with Agricultural Limestone”

  1. […] Lime is the supplement of choice for soil that is too acidic. Lawns grow best when the pH is between 6.0 and 7.0. The ideal is between 6.2 and 6.5. If your soil's pH is below 6.0, an application of lime in the late fall or early spring will help to move it into the perfect pH range. To learn more about the use of lime, see our previous newsletter Strengthen Your Soil with Agricultural Limestone. […]

  2. […] an amendment to add to acid soil. This is absolutely true, and we have written about this use in a previous newsletter. But lime is also very beneficial for clay soil, even when acidity is not a problem. In fact, most […]

  3. […] For additional information about how to make your soil less acidic, read Strengthen Your Soil with Agricultural Limestone. […]

  4. […] If your pH is too lowmeaning your soil is too acidicyou will need to add lime. We explain how to best do this in our previous newsletter, Strengthen Your Soil with Agricultural Limestone. […]

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