How To Build A Raised Garden On Concrete

A raised garden is an elevated gardening space built on simple and cost-effective methods, usually on top of concrete slabs or other sandstone or brick pavers. Instead of digging dirt and planting in it, the grower builds up a vertical column using planks, blocks and anything else handy to construct a raised garden to accommodate his plants.

Raised beds are an effective way to construct a garden on your concrete patio. You can add depth, height and variety as you create your garden plan. If you’re looking for a new way to view your landscaping and make your kitchen garden grow organically, consider utilizing raised beds on concrete pavers.

It’s easy to build a raised garden on concrete, and you’ll enjoy all the benefits of raised beds: better drainage, less weeds, and greater yields. Here’s how to do it.

Make sure your containers are on a level surface.

To make sure you have a level surface to build your raised garden on, you can use the following tools:

  • Wood blocks. Simply place the wood blocks under each container to make it level.
  • Spirit level. Place a spirit level on top of each container and check for evenness all around.
  • Laser level (optional). If you have access to a laser level and want something more precise, use that instead.

Use lumber that won’t rot, such as cedar or redwood.

When choosing wood for your raised garden, it’s important to remember that pressure-treated lumber contains chemicals that are harmful to the soil you’ll be growing in. Additionally, because of the way this type of wood is treated, it can create splinters and cracks that can harm plants as they grow.

Avoid using lumber with nails in it as well. Nails can rust over time and cause damage to your plants’ roots if they penetrate too deep into the ground during construction or planting.

Make sure you choose lumber with no knots or shakes on its surface; both of these features will weaken the structure of your raised bed when exposed to moisture over time.

Use some kind of membrane (such as heavy plastic) to keep the soil from leaching into the wood.

You can also use some kind of membrane (such as heavy plastic) to keep the soil from leaching into the wood. This is especially important if you’re building on concrete, because concrete will eventually turn into a patchy, crumbling mess and you’ll have to replace it. You don’t want your raised garden resting directly on an unstable foundation!

Another benefit of this simple modification is that it will reduce rot in your raised garden bed by keeping moisture away from the wood. If you’re going for a natural look with some softness around its edges, this may not be an issue for you—but if not, consider adding a sheet or two before filling with soil anyway.

Line the bottom of the raised bed with an extra layer of plastic.

To prevent water from seeping through the bottom of your raised garden, you can line it with a waterproof liner. If you have enough money to buy one, there are specially designed plastic sheets that are thick and durable enough to withstand weight and pressure. If not, any other heavy-duty plastic should do the trick.

Your options here include:

  • A tarp or garbage bag
  • A heavy-duty plastic bag (like those used in grocery stores)
  • A heavy-duty plastic tarp

Drill drainage holes in the sides of the box.

Now it’s time to drill drainage holes in the sides of the box. Drill holes in the bottom of the box as well if you have a removable bottom.

The size of these holes depends on what material you’re using for your raised bed and how much rain you get there, but I usually drill 2″ holes on each side of my boxes for maximum drainage.

Fill the box with soil designed for raised beds and vegetable gardens.

The next step is to fill the box with soil. You can use a good quality soil mix that is designed for raised beds and vegetable gardens. It’s important that you choose a mix that includes compost, as this will help to keep your plants healthy and strong. There are many brands of soil available at local gardening centers or home improvement stores, so be sure to find one that suits your needs before purchasing it (check out the Resources section below for more information).

The last thing you need to do is plant your favorite flowers or vegetables in the raised bed, then sit back and enjoy growing all of your favorite fruits, veggies, herbs and flowers.

You can water your concrete garden with a watering can, or set up a drip irrigation system.

Watering your garden is easy, whether you choose to use a watering can or set up a drip irrigation system. You’ll want to water your garden at least once every day, but you may find that the soil dries out faster than that if it’s hot outside. In this case, give it extra water until the soil stops drying out so fast and then go back to your regular schedule.

Concrete has low porosity and does not hold much moisture in its pores. Soil in raised beds often drains quicker than other types of gardens because there are fewer obstructions for water to flow through before reaching the bottom of the bed. Therefore, it is important not only to water regularly but also deeply enough so that all parts of each plant have access to some moisture on their roots as well as at least some air circulation around them for healthy growth

Your raised garden will be well-drained and easy to manage.

A raised garden will make it possible for you to grow a variety of plants in your yard. You can plant your favorite flowers, herbs or vegetables in a custom raised garden bed for a great looking and productive space.

Raised garden beds are easy to build and require minimal maintenance throughout the year. They look beautiful when planted with colorful flowers, fragrant herbs or delicious veggies while they add functionality by making it easier to access plants without bending over or kneeling down on the ground—even when heavy with fruit.

You’ll be able to enjoy fresh foods at their peak flavor while taking pleasure in knowing exactly what went into them — no pesticides used here.

Final words

All in all, this is a great way to get started with raised bed gardening. This method is easy enough for beginners, but allows you to create a beautiful garden without the hassle of digging out soil and leveling land.

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