Although wood is warm and beautiful it does require care. Wooden planters, exposed to sun, rain and moist soil require a lot of care. Concrete is a whole lot less demanding.
OK, you may have a hard time replacing a warm and aromatic cedar planter with a material that you recognize as crumbling underpass or Soviet mass housing material but stop a minute.
Concrete can be beautiful and very durable – hundreds of years isn’t unrealistic. There is an enormous amount of literature describing methods for accomplishing this. Unfortunately not every concrete producer pays attention to best practice publications. We do.
We choose our aggregates for strength, colour and cleanliness. We weight the components of our mix every time. We add super plasticizers to allow the mix to flow into the fine detail of the molds, we vibrate the molds as we pour but not so much as to separate the coarse from the fines. We keep the concrete warm and moist as it hardens so that all the strength potential is realized. We really love concrete.