DIY Large Concrete Planters: A Comprehensive Guide

Making large concrete planters at home can be a rewarding DIY project. Whether you want to enhance your outdoor or indoor space, creating your own planters allows for customization and durability. This guide will walk you through the step-by-step process of making your own concrete planters.

Materials Needed:

Concrete Mix: You can use premixed concrete or a mix of cement, sand, and gravel. Water: For mixing the concrete. Molds: These can be made from plastic containers, cardboard boxes, or any other shape you desire. You’ll need one mold for the outer shape and a smaller one for the inner shape to create the planter cavity. Release Agent: Cooking oil or a commercial release agent to help remove the mold later. Tools: Mixing bucket, trowel, gloves, and a drill if needed for drainage holes.

Instructions:

1. Prepare the Molds:

Choose your outer mold size and shape. This could be a large plastic container or a cardboard box. For the inner mold, use a smaller container that will fit inside the outer mold, leaving enough space for the thickness of the planter walls.

2. Apply Release Agent:

Coat the inside of the outer mold and the outside of the inner mold with a release agent. This will help you remove the molds later without damaging the concrete.

3. Mix the Concrete:

In a bucket, mix the concrete according to the instructions on the package. Typically, you'll want a thick, pourable consistency.

4. Pour the Concrete:

Pour some concrete into the outer mold to create the base. Tap the sides to remove air bubbles. Place the inner mold into the outer mold, pressing it down to create the cavity for the planter. Make sure it's centered and straight. Pour more concrete around the inner mold until the outer mold is filled. Use a trowel to smooth the top.

5. Add Drainage Holes (Optional but Recommended):

If you want drainage holes, you can insert small PVC pipes or dowels into the concrete before it sets. Remove them after the concrete has cured to create holes.

6. Curing:

Cover the mold with plastic to keep moisture in and let it cure for at least 24-48 hours. Longer curing is recommended in cooler or humid conditions. After curing, carefully remove the outer mold and then the inner mold.

7. Finishing Touches:

Sand any rough edges or surfaces if desired. You can also paint or seal the concrete for a more finished look.

8. Planting:

Once your planter is fully cured and dry, fill it with potting soil and your desired plants.

DIY Modelling Tips:

Safety:

Always wear gloves and a mask when working with concrete to protect your skin and lungs.

Customization:

You can add colors or aggregates like pebbles to your concrete mix for a unique look.

Weight:

Keep in mind that concrete planters can be very heavy, especially when filled with soil and plants. Consider where you place them.

Conclusion:

By following these steps, you can create beautiful, durable concrete planters that enhance your outdoor or indoor space! With a few simple materials and some basic instructions, you can bring your DIY planters to life.