Penstemon cobaea (Dew flower)

Moss phlox is a dense ground cover blanketed with notch-petaled flowers in April and May. Blooms can be muddy hot pink, bright rose, and magenta, while other cultivars include white, soft lavender-blue, clear pale pink to deep pink, clear scarlet, and lavender, some with a darker or lighter eye. Evergreen foliage is narrow, short, and stiff. Darker-flowered forms have dark-green leaves or red-tinged leaves that darken to burgundy in winter.

This spreading, semi-evergreen perennial has hairy leaves and lavender-blue to pale violet and white flowers borne in open clusters in early spring. Flowers can have notched or unnotched petal lobes. Cultivars include ‘Clouds of Perfume’ with light lavender-blue flowers; ‘Eco Texas Purple’ (dark purple with a violet eye); ‘Fuller’s White’ (white); and ‘London Grove’ (lavender-blue flowers).

This upright, herbaceous perennial has slender, hairy stems reaching 1.5 to 3 feet tall, with clusters of lavender-rose, lilac-pink, or white flowers. The stems often have burgundy spots on them. Blooms appear in early summer and midsummer.

Daylilies are classic, extremely popular garden plants. They feature long, arching, strappy leaves and long stems of generally 6-petaled flowers, though double flowers are popular as well. Each flower lasts only one day, hence the plant’s common name. Daylilies come in a wide range of colors, from cream and cheery yellow to peach, orange, fiery red, deep burgundy, pink, and purple. Some have contrasting throats and "eye-zones." Daylilies are ideal for a mixed herbaceous perennial border.