Fortunately, these low-maintenance perennials don’t need to be divided on a regular basis to keep flowering at their best throughout the summer. Daylilies may not flower well the year after they are planted or for a year or two after division. If daylilies aren’t blooming, ensure they are getting enough sun, water, and nutrition from organic mulch such as homemade compost.

But the plant continues to produce new buds, so you’ll have blooms all summer long! These flowers have large, showy blooms that last for a day (hence their name). Look for repeat bloomers, like the golden ‘Stella de Oro’ Daylily. Daylilyĭaylily is another long-blooming perennial flower for the garden. Delphiniums bloom in early to mid-summer and can reach 6 feet tall or more! Established plants tend to bloom a second time in late summer for a gorgeous display of towering blooms. They have long stems with clusters of small blooms.

This plant is also very easy to care for and is tolerant of a wide range of growing conditions.ĭelphiniums are tall, stately flowers that come in a range of colors including blue, purple, pink, and white. Russian Sage (Perovskia atriplicifolia) is a heat-loving perennial that blooms all summer long with showy, lavender-blue flowers. This plant is very easy to care for and is tolerant of a wide range of growing conditions.ġ1. Salvia is available in a wide range of colors, including blue, purple, red, and white. Salvia (Salvia) is a heat-loving perennial that blooms all summer long with showy, brightly-colored flowers. Scabiosa is very easy to grow and makes an excellent cut flower for bouquets. It produces large, round flowers in shades of blue, pink, purple, and white. Pincushion Flower (Scabiosa) is a beautiful perennial that blooms from early summer to fall. Evening primrose can bloom all summer if you deadhead the spent flowers regularly. The flowers are white, but they turn pink as they age. It’s a great choice for gardeners who want to add a touch of romance to their landscape. Evening Primrose (Oenothera) is a beautiful flower that blooms at night (hence its name).

Perennial flowers that bloom all summer