Porch rail planters or deck rail planters are flower boxes that attach to a porch or deck railing. They function much like traditional planters with the main difference being that they are mounted to the rail instead of sitting on the porch or a table.
Although nearly any plant or flower can be grown in porch rail planters, some top picks for containers on the deck, including rail planters, including Scaevola or fan flowers, hibiscus and lantana. Railing planters can also be used to plant zinnias, verbena and butterfly bushes to attract butterflies to the planter. The planters can also be used for growing vegetables, such as lettuce or spinach.