Window boxes are a nice little pick-me-up to have a mini garden right outside your view. Plants that work well in window boxes are those that live well in containers and can take full sun or direct sun. Window box plants can be annuals or perennials depending on your personal choice.
Petunias, or Petunia x hybrida, are part of the Solanaceae, or nightshade, family. Petunias can be annual or perennial and are easy to grow. Petunias are either multiflora, meaning many flowered, or grandiflora, meaning large flowered. Plant flowers can get up to 5 inches but are typically 2 to 3 inches. They come on all colors. The plant requires good soil and a sunny location with regular water. Propagate via seeds after last frost.
Moss Rose, or Portulaca grandiflora, is part of the Portulacaceae, or purslane, family. It is an annual. Moss Rose gets 6 inches tall and 12 inches wide. There is a rose looking flower about 1 inch wide next to bright green juicy leaves. The plant likes well drained soils, full sun, and likes regular watering even though it is drought tolerant. To propagate sow the seeds.
Marigold, or Tagetes spp., is part of the Asteraceae/Compositae, or aster/daisy, family. It is a fast growing annual that is good for beginners. These bushy plants get 6 to 12 inches tall with 2 inch wide flowers. Blooms are in bronze, orange, and yellow. The plant requires any type of soil, full sun, and a watering during any time of drought. Propagate via seeds.
Blue Flies, or Aristea ecklonii, are part of the Iridaceae, or iris, family. It is an evergreen perennial. It has grass like leaves 15 to 18 inches long with small saucer shaped blue flowers on stalks in spring and summer. The plant prefers full sun or light shade, a rich well drained soil, and can be propagated via seed or dividing the root clump.