| Wood turns gray quickly and rots, losing it's beauty relatively quickly. |
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| Plastic heaves out of the ground in winter, warps in the summer or shifts out of place turning into an eyesore very quickly. |
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| Retaining stones are difficult to keep in place; weeds and grass grow through the gaps and become a maintenance issue very quickly. |
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| Unless you go to the huge expense of having a mason set the bricks, you have the same issues as above. |
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| Stones are better served in other applications and are an ineffective landscape border, plus they're very expensive. |
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| Tree rings made from plastic or metal typically heave up from the ground in the cold weather. |
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| Railroad ties contain chemicals that are harmful to people and the environment. Since they are usually purchased "used", their life span and appearance are short lived. |
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| Inferior plastic. |
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| Landscape pavers. |
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