What Do I Put On The Bottom Of A Raised Garden Bed?

What Do I Put On The Bottom Of A Raised Garden Bed?

Quite a few individuals often inquire, “What should I put on the bottom of a raised garden bed?” With your very own raised garden bed, you may save your back, which is just one of the numerous advantages of having your garden bed. What should you place at the bottom of a raised garden bed? Do you know what it is?

When I have a raised garden bed, what should I put on the bottom of it? At the base of a raised garden bed, there should be a layer of organic material consisting of grass clippings, leaves, wood chips, straw, and other organic materials. Putting the cardboard on top of that layer is the correct thing to do. Compost will be created from the organic waste, and the cardboard will limit weeds’ growth.

It is a quick and primary response, but if you understand why those materials are preferable to put at the bottom of a raised garden bed, it will help you become a better gardener and better know the plants you are growing.

To what end is it beneficial to make use of cardboard or newspaper?

It would help if you put cardboard or newspaper at the bottom of your raised garden bed for an excellent reason. This will prevent weeds from growing as they would otherwise.

To get the best possible outcomes, position a piece of cardboard or five or six layers of newspaper at the base of your bed. Be careful to cover the whole base so there is no chance of weeds coming in from the outside. Another thing that will be of assistance in this regard is the application of a thick layer of mulch on top.


Because the cellulose in the paper is an organic substance, utilizing cardboard or newspaper as a substrate for your raised garden bed is a wise decision. The result is that your soil will become far more productive and much simpler to deal with.

If you place cardboard or newspaper at the base of your raised garden bed, such materials will eventually get broken down. On the other hand, it will remain in place for sufficient time to prevent those annoying weeds from entering.

When it comes to raised garden beds, one of the most common issues individuals have is maintaining moisture. A solution to this issue involves mulching with straw. In addition to ensuring that your soil remains wet, it will also prevent weeds from growing.

This project requires three to four inches of mulch or straw. It would be best if you then shoveled it in throughout the springtime. Just ensure you don’t dig too deep since you don’t want to run the danger of pulling up any weed seeds in the soil under the surface.

Instead of using cardboard or newspaper, would it be possible to use carpet or another kind of barrier?

At the bottom of the garden, some gardeners have suggested putting down carpet or another blanket barrier of a similar kind.

You may use your raised garden bed as a shield from the roots of your plants. However, this is an error in judgment.

As a result of the fact that it slows down drainage, installing carpet on the bottom of your bed is an issue. In addition to this, it restricts the root development of some plants.

If you use plastic bags, you will experience the same kinds of issues.

To answer your question, what soil should you use at the bottom of a raised garden bed?
If there is more than one raised bed, consider purchasing the unit, either by the cubic foot or the cubic yard. Utilizing our Soil Calculator, you can determine the precise quantity of soil you want.

When it comes to soil, you should employ the following proportions in general:

  • 60 percent of the topsoil
  • Composting accounts for about thirty percent
  • It would be best to use a soilless growth mix comprising perlite, peat moss, and vermiculite. The quantity of potting soil should be ten percent.

It is essential to keep in mind that these ratios are just estimates. Specifically, this is because the amount of soil might differ from one source to another.

For example, if the Soil Calculator recommends purchasing 0.44 cubic yards of soil for your raised vegetable bed, you should round up to the next half-yard and buy the correct amount.

Some regions of the nation may not have access to sufficient quality topsoil. If this is the case, then a suitable option would be a mixture of compost and a soilless growth medium composed of fifty percent compost and fifty percent soilless growing medium, sometimes known as “potting soil.”

It is also possible to include peat moss in your raised beds. On the other hand, it shouldn’t account for more than twenty percent of your overall composite.

It is essential to remember that peat moss is very acidic by nature. This indicates that there are more suitable mediums for cultivating vegetables than this.

One of the Most Important Guidelines for Raised Garden Beds

One of the most attractive aspects of raised garden beds is the soil, which is particularly rich and beautiful. This brings us to the essential rule of raised gardening: ensuring you do not tread on the soil.

Using a raised garden bed, you can cultivate fluffy, light and well-drained soil. This is a significant benefit. The fact that you have such excellent soil also ensures that your plants will flourish vigorously.

The dirt will get more compacted if somebody steps on it. This action will result in a decrease in aeration, and it will also limit the activity of beneficial microbes that are located under the surface of the soil.

Is it necessary to have a bottom in a raised garden bed as well?

If you have a raised garden bed resting on the ground, you do not need to have a bottom for it. Only ifpting to preserve the surface that lies underelevated bed, such as a wooden deck or a flat roof, would you need a bottom.

You may still use weed cloth to prevent weed seeds from sprouting in your soil, even if you do not need to place a hard bottom on your raised garden beds in most situations. This is for the most part.

There are many similarities between the functioning of cardboard and weed cloth. It will prevent weeds from growing while yet allowing for a sufficient amount of drainage.

It would be best if you used extreme caution when it comes to the use of treated wood in your raised bed.
It’s beautiful that you are considering what to put at the bottom of your raised garden beds. On the other hand, you need to exercise caution regarding the woody when constructing your raised bed.

One of the most significant issues with treated timber is that it often includes hazardous chemicals. And those chemicals have the potential to seep into the ground. This indicates that there is a possibility that the chemicals will come into contact with your plants. You do not want it at all!

As far as flower beds are concerned, this is not an issue, but if you are planting food plants, it might be a significant problem.

When it comes to green manure cover crops, should I be concerned?

In most instances, cover crops made of green manure are sown in the intervals between crop rotations. In addition, you may plant them throughout the winter months.

The objective is to revitalize the soil by incorporating organic matter. You can produce a fertilizer high in nitrogen if you do this.

To prevent the green manure cover crops from going to seed, it is necessary to flip them over. Before you replant the bed, you should give these steps a few weeks of work.


Make Sure You Don’t Forget to Revamp the Soil

With raised garden beds, you should be aware that the earth is constantly settling, which you should remember. In the early spring, you will most likely discover that the soil level is several inches lower than in the autumn of the previous year.

Take a look at a spadeful of earth, for example. Is it crumbly, light, and soft to the touch? Alternately, has it been compressed? You may want some peat to fluff it back up if it has been flattened.

Utilizing the no-till technique of gardening allows for the application of amendments via the use of top-dressing. It is possible to apply additives to the soil, such as peat, lime, rock phosphate, and compost, among other similar substances. You should then cover it with a small mulch and leave it there.

As soon as your plants grow, you may add more mulch to the bed to finish it. Additionally, it is recommended to apply manure around two weeks before planting seeds in the spring.

The bottom line

You are well on your way to creating a new and stunning garden now that you know how to prepare your raised garden bed and what to place in the bottom. To ensure that you are rewarded with a bountiful harvest, all you need to do is ensure that the bottom of your raised garden bed is filled with soil, compost, and cardboard.

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