How to Repair a Concrete Planter

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Concrete planter
Concrete planter (Image: www.flickr.com, www.diynetwork.com)

Few things are as enjoyable as flowers. They add beauty to any yard or porch as well as enjoyable aromas. Planting flowers in concrete planters adds to the beauty that you enjoy. But what can you do when the planter becomes compromised by cracks and damages? Do you need to get rid of it and transplant the flowers to something else? Not at all. There is a way to repair the concrete planter and continue to enjoy its beauty.

Things You'll Need

  • Pot to temporarily transplant flowers into
  • Small head stainless steel brush
  • Mortar repair in caulking tube (for small cracks)
  • Bag of concrete patch (for large cracks)
  • Bowl for mixing
  • Flat edge plaster trowel

If the planter is currently home to plants or flowers, gently transplant them to a temporary pot while the planter is being repaired.

Hose down the planter and remove all dirt. Using the steel brush, scrub along the edge and inside the crack to remove any loose debris. Allow the planter to completely dry before continuing.

If the crack you are repairing is a small one, take the mortar repair caulking tube and completely fill the crack. If the crack runs along the inside and outside of the planter, be sure that you inject enough into the crack to completely fill it. Smooth the edges of the filled crack with your finger.

If you are filling a large crack, mix up the bag of concrete patch according to package directions. Using the trowel, completely fill the crack with the concrete patch. Use the pointed edge of the trowel to get the patch into all the nooks and crannies of the crack. If it is a sizeable hole you are repairing, fill it completely. After it has dried, come back and fill the spaces to be sure there are no hidden cracks remaining. Use the edge of the trowel to smooth the lines where you have filled the crack.

Mixing concrete patch
Mixing concrete patch

Before transplanting the flowers back to the concrete planter, allow it to dry for several days.

Tips & Warnings

  • Before putting flowers back into planter, add a plastic liner. This will help protect the planter from the wear and tear of soil and water.
  • Test the seal of your concrete repair by filling the planter with water only before transplanting flowers back in. This will also allow you to see if any other cracks are starting to form.

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