Look for square butterfly planters made of polyresin. Such planters feature butterflies worked into the design of the planter rather than those that are painted on, and can resemble ironwork in appearance. These planters actually work as holders for plain, smaller and rounder planters as the many gaps featured in this design are not conducive to adding soil and planting flowers. Use larger-sized planters to house more than one type of butterfly-friendly plant or flower.
Square metal planters that feature molded butterfly designs are another option; look for those with painted designs in bright colors to match the color scheme of your butterfly garden. Metal planters can appear shiny and work as a brilliant, sun-reflecting garden addition. Select unpainted planters if you are in the market for more muted garden decor pieces.
Painted ceramic and porcelain square butterfly planters come in assorted sizes, such as small porcelain planters featuring Asian butterfly designs. The planters can be used on garden benches and tables rather than placed on the ground so the detailing is more visible. Larger ceramic planters with painted butterfly molding in various sizes are also options; try displaying large and small versions of the same ceramic butterfly planter as part of your garden decor.
If you are looking to plant butterfly-friendly flowers and plants in your square butterfly planters, use nectar-rich flowers for best results. Flowers and plants that attract butterflies include honeysuckle, lavender, lilac, mint, pansy, milkweed, snapdragon, sage and the daylily. Other butterfly-friendly flowers and plants include shasta daisy, stonecrop, purple coneflower, goldenrod, catmint, bee balm and fleabane. Use these flowers and plants in your square butterfly planters and enjoy the butterflies that come to feast.