Concrete Block Planter Ideas. Like mentioned earlier, this depends on the type of planter you are making and can involve constructing a mold using laminate boards or plastic bowls from a dollar store. How to make a concrete planter.
This is a great idea for crops prone to pests, and could also be used to protect sensitive crops from the elements and to extend your growing season. 197 x 197 x 140mm 7.7 x 7.7 x 5.5” 120 blocks 1328 kg 2928 lbs. You can use them as flower planters and build fire pit of concrete blocks.