How to find out my soil type - Feeling Soil with a hand
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How to find out my soil type | 2 easy ways

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How to find out my soil type is part 1 in a series of posts on garden soils. Part 2 looks at the pH testing of soil in 4 easy ways and the final part, part 3 details how to improve your soil for gardening with tips and ways one can improve your own soil in the garden.

Our buyer’s guide highlights 6 of the best soil pH testers on the market today which will help you determine the pH of your soil.

However, in this first post, we explore the types of soil, soil structures and soil textures, how they are made up, and finally how to easily find out the ‘soil type’ and texture in your own garden and or allotment, using a few ‘easy’ uncomplicated methods. This is the first step in our process on how to find out my soil type.

In further posts, we will look at soil testing (Ph levels), soil improvers (organic matters), and how we can improve certain types of soils and we will be looking at the different plants that grow best in certain types of soils.

Generally, we know that a good base or sound preparation for any activity or task ensures that any further or additional efforts put into such activity will certainly pay dividends.

It is no different when getting the soil ready for the garden or allotment to plant. Any experienced gardener will tell you the foundation for all our gardening efforts going forward in the weeks, months, and years to come is the soil beneath with which we work.

What work we put in at the beginning, will ensure all our efforts both physical and financial will be rewarded in the future.

How to find out my soil type - Soil texture Triangle
'Soil Texture Triangle' to determine soil texture

What is garden soil?

Soil is perhaps different things to different groups of people. As gardeners (and as discussed within this post) when we talk about soil it is the first 40-50cm (15-20in) from the surface is what we class as the soil.

Types of soils

There are generally accepted to be 6 main types or groups of soil: loamy, clay, sandy, peaty, chalky, and silty soils. All have different structures and textures.

Clay soils are heavy, high in nutrients, wet and cold in winter and baked hard and often cracks in a dry hot summer. Holds moisture well, but drains slowly.
Sandy soils are light, dry, warm, low in nutrients and often acidic. Sandy soils drain quickly after rain or watering.
Silt soils are fertile, light but moisture-retentive, and easily compacted.
Loams soils are mixtures of clay, sand and silt that avoid the extremes of each type.
Peat soils are very high in organic matter and moisture.
Chalky soils are very alkaline and may be light or heavy.

Let’s look at a couple of texture examples; the mineral mix How to find out my soil type - Soil Textureforming the ‘texture’ of clay soil is made up from approximately 15% silt, 15% sand and 70% clay, whereas the texture of loam soil is made up of 20% clay, 40% silt and 40% sand. 

Look at the infographic to the right to see Silt, Clay, Sand and Loam soil texture make up percentages. You see Loam is a well-balanced texture, having the qualities of the others.

Therefore, lets set about our first task then, on our journey to soil excellence. Let’s try and determine which ‘type’ of soil from the list above we have in our garden or allotment? As once we know which type of soil we have; we can then set about preparing that soil correctly.

How to find out my garden soil type?

We can use a couple of easy and inexpensive methods to determine our garden soil type and texture.

Method 1: The Feel Test

Take a small amount of your soil in a pot and add a small amount of water to dampen the soil. Make sure all the stones and bits of root are removed as well before undertaking this exercise.

Soil Characteristics

  1. Clay soils can be identified by simply rubbing the mixed soil sample together. If it feels ‘sticky’ and looks a little ‘shiny’ when ‘smeared’ between your fingers the more likely its clay. Clay soils can also be rolled into a ‘sausage’ shape in the palm of your hand, and then held vertically without breaking.
  1. Sandy soil has a very gritty element to it, take a small amount and rub it in your fingers you can feel the grittiness, it will fall easily through your fingers and can’t be compacted. Unlike clay it can not be rolled into a sausage.
  1. Silt soil is also free draining and compacts quite well. When compacted its quite smooth and silky to the touch, however it will not keep its ‘rolled’ shape if for instance you try rolling it into a ball or sausage like clay.
  1. Loam soil is probably the holy grail of soils. If your soil sample is light brown in colour, rolls up well into a loose ball when squeezed and feels quite spongy then it is probably loam. You will not be able to make a sausage from it and keep a shape though.
  1. Peat soil is very dark in colour dark brown to black. Very, very spongy when touched, peat soil is unable to be rolled into any solid form, even when rolled into a ball due to its very high-water content.
  1. Chalky soil are light whitish/brown in colour as one would expect with very visible small white stones of chalk. Often largish flint stones and limestone are present in chalky soil. Living in a hard water area may also indicate the possibility of chalky soils.

Quick tip: If you think you have chalky garden soil, then place the soil sample in a small amount of vinegar. If it ‘froths’ then it contains free calcium carbonate (chalk) or limestone and is lime rich due to the release of carbon dioxide.

Do not skip this first and most basic of exercises, it may seem insignificant now, but it is an especially important part of the ‘whole’ exercise for soil improvement.

Method 2: The Mudshake Test (Soil Texture)

Now we are getting a little bit more scientific but still an extremely easy and accurate method of how to find out the ‘soil texture’ in your garden.

For this method to work you will need the following equipment

  1. Your Garden Soil (Mixed Sample From Various Parts of the Garden)
  2. Tap Water
  3. Clear Glass Jar (Vertical Sided) with lid
  4. Soil Texture Triangle (Download and Print)
  5. Black Marker Pen
  6. Ruler (Best in Millimetres)

The soil texture by simple definition consists of % sand, % silt and % clay and those 3 parts added together make up the 100% of your soil texture

Let’s check out this video below to see ‘how to find out my soil type‘ using the ‘Mudshake’ test method together with how to use the soil texture triangle. Both are easy and provide quick results.

Conclusion - How to find out my soil type

If you have reached this point in the post ‘how to find out my soil type‘, you should have a very good idea of the soil type and texture in your own garden and or allotment.

Note this information down somewhere safe with the date, as you can come back to this periodically over the coming weeks, months and years to see how your soil changes over time as you repeat the exercise, as you improve your soil going forward.

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