Planters or organized beds with planter borders can not only provide mowing definition, but contain the flowers and hopefully keep out weeds that may grow into them from surrounding areas. Backyard planters can be big or small, permanent or portable. The simplest planters consist of edging for flower or vegetable beds. In the past, many used recycled railroad ties for this, and they still add a distinctive rustic appeal to garden beds. In recent years, however, pressure-treated landscaping timbers have become increasingly popular. These are also very easy to use to create bed edges, or even to build up permanent planters. For a step-by-step at the planter construction process, take a look at this DIY video tutorial.