Can You Put Cement In A Plastic Planter . Also, to apply such cement you need to use a reinforcement mesh to keep cement from cracking and failing. Once that’s completed, install your bed on the ground and set a level on top of one of the long sides. What kind of plants can you have put up in concrete planter troughs from www.pinterest.com Pour some water on your concrete or paved surface and see where it drains. With large planters and pots, consider more space occupying options. Sanding will give the surface tooth to help paint adhere better.