Hundreds of flowers exist, each with its own distinct shape, size, bloom colour and growing requirements. Roses alone are divided into about 150 species. Many flowers emerge in spring and summer, while some don't sprout until fall and winter, creating much needed colour to the winter landscape. To ensure a constantly evolving garden filled with endless colours, plant flowers for each growing season.
Tulip (Tulipa) is a spring-blooming bulb that comes in all colours except true blue. They grow up to 2 feet tall and feature a range of cup shapes including teardrop, bowl, goblet and star. Each tulip flower has six petal-like tepals that can be fringed or ruffled, depending upon the type. Some tulip flowers are single, while others are double. The basal leaves on tulips are blue to grey-green in colour and have a broad, oval shape. Some varieties of tulips have long narrow foliage that is strap-shaped. Tulips grow best in full sun and well-drained soil.
Giant hyssop (Agastache Firebird) is an herbaceous perennial flower that grows 2 to 3 feet tall and up to 2 feet wide. It features fragrant, tubular-shaped flowers that grow in whorls along the salvia-like, erect stems. Flower colours on giant hyssop are copper and orange to coral and attract butterflies to the garden. Giant hyssop flowers emerge in June to September, creating a long-lasting blooming season. The grey to green foliage has a potent mint scent and is often used to flavour teas. Giant hyssop grows best in full sun and well-drained soil. Giant hyssop is hardy and heat and drought tolerant once established.
Hellebore (Helleborus --- hybridus cvs.) is a late winter-booming evergreen perennial flower with a clumping form. It grows up to 1½ feet tall and wide and features cup-shaped, 3- to 4-inch-wide flowers that appear to be nodding down to the garden. The roselike flowers appear in clusters of one to four on stems that rise above the foliage. Bloom colours on hellebore range from light rose and purple to white or pink. The serrated, leather-like foliage on hellebore is dark green and grows 8 to 16 inches long. Hellebore grows best in full to part shade and well-drained, humus-rich soil.
Impatiens (Impatiens wallerana) bloom from late spring to fall and grow in a range of colours including orange, purple, pink, red and white. They feature fleshy foliage and brittle, succulent stems, as well as five-petaled flowers that have explosive seed capsules. Impatiens grow 8 to 24 inches tall and 1 to 12 inches wide and thrive in part to full shade and well-drained, moist soil.