Self Watering Concrete Planter
After figuring out the mold, this step was easy! If you’ve read/watched any concrete tutorials before, you may notice we’re using a sliiiightly different product from the norm: Quikrete Vinyl Concrete Patcher. We chose it because it has a fine grain (which gives you a nice surface finish and fills into more detailed shapes) and because you can buy a relatively small batch at a time.
Before you start, place some scrap wood over your work surface. This protects your table and helps you agitate the mold later. Grab a dust mask and some gloves (it’s not the end of the world if it gets on your hands BUT you don’t wanna breath in any concrete dust).
We go into more detail about getting your concrete to be the right mix in our concrete letter tutorial, but we will cover the basics here.
Add a small amount of water and a few big scoops of concrete to a mixing container or bucket. A little water goes a long way, so keep adding a little more water and few more concrete scoops until it gets to be the consistency of sandy pancake batter (delicious)! It’s easy to accidentally add too much water. To check if you have too much, agitate the mixing container, and excess water will rise to the surface. If you see water pooling a little at the top, add a little more concrete mix.
In total, you’ll need to mix for 2-3 minutes to make sure everything is incorporated. Then pour it into your silicone mold, overfilling it a little because it will settle down into the nooks and crannies. Agitating the mold by tapping on the sides of it repeatedly or banging the scrap wood it’s sitting on with a mallet. Once there are no more bubbles and it doesn’t seem to be settling any lower, you’re good to go. (though honestly, we kinda like the look of a few bubbles… it adds some interest. But you don’t want a ton or it’ll be a weaker end product.)
After the concrete dries (we give it about 24 hours), carefully peel back the silicone and you have yourself a planter! If they are still moist, keep them on a surface that can be messy, like your scrap wood from earlier. If you put these on something absorbent, they’ll leave moisture spots.
Self Watering Concrete Planter: We can’t keep plants alive. So today we’re making a DIY concrete self-watering planter in the hopes that the plants will take care of themselves haha. Just a heads up, our planter has some funky curves and angles so we used a 3D printer to make the…