A colorful garden variety, purple flowers and plants set off fiery colors found in the garden like red and orange while complementing green accent plants. Purple plants range in color from deep violet to pale lilac and lavender shades. Some purple flower types are perennials and have the ability to emerge every year for a constant source of color to the garden. Deciduous flowering vines with purple blooms showcase outdoor structures like pergolas, mailboxes and trellises for a showy display.
New England Aster
A perennial flower with deep purple blooms and yellow eyes, New England aster (Aster novae-angliae "Purple Dome") has a moderate growth rate and clumping habit. Growing 1 to 3 feet tall and wide, New England aster is mildew resistant and attracts butterflies to the garden.
The semi-double, daisy-like blooms emerge in late summer and last into the fall, making for a long blooming season. Frost-tolerant, New England aster is ideal tucked into containers or grown in a cutting garden to use in a fresh-cut bouquet.
New England asters require full sun to part shade and moist, fertile soil to thrive. The USDA Hardiness Zones for planting are 4 to 8.
Italian clematis (Clematis viticella) is a rapidly growing deciduous vine with deep purple flowers and medium texture. Growing 15 to 20 feet long, Italian clematis is an ideal vine to grow over a pergola or around a mailbox for a burst of color. The twisting stems and twining habit of Italian clematis easily cover any outdoor structure. A prolific bloomer, Italian clematis have 3-inch wide flowers that emerge in mid-summer and last into the fall. The blooms of Italian clematis emerge on new wood; in early spring the plant can be severely pruned for the following growing season. Italian clematis requires full sun to thrive. The zones for planting are 5 to 8.
Indigo Spires Sage
Indigo spires sage (Salvia "Indigo Spires") is a perennial flower with deep purple blooms and a rapid growth rate. Growing 3 to 6 feet tall and 1 to 3 feet wide, indigo spires sage has 12- to 15-inch spikes that hold the flowers. A prolific bloomer, indigo spires sage flowers from early summer though fall, making for a long-lasting plant for the garden. To promote new blooms, indigo spires sage requires deadheading the spikes as soon as they begin to fade.
A butterfly attractant, indigo spires sage is ideal as a backdrop for perennial beds and borders or grown in oversize containers on a porch or patio. Indigo spires sage requires full sun to part shade and well-drained soil. The zones for planting are 7 to 11.