Great decision to add perennial flowers to your garden center shopping list. Perennials will provide bloom color year after year in your flower garden. Before you finalize your list of perennial flowers to purchase, consider perennial flowers that reseed, or self-seed or self-sow, increasing your flower power without additional labor.
Perennial flowers that reseed can lend a helping hand to populate an English cottage garden. Sometimes, though, the dropped seeds may be relocated by hard rainfall or the wind. To avoid potential upstarts in unwanted areas, like in the lawn, pick off spent flower blooms before they have a chance to produce seeds. The alternative is to pull the upstarts as you see them. And keep in mind, that you can also propagate most perennials be digging up the root ball about every 3 years to divide it into more plants.
1. Japanese Primrose
Japanese primrose (Candelabra primrose), which is cold hardy in USDA plantings zones 3 to 9, grows 12 to 24 inches tall. Plant Japanese primrose in full to part shade and it will reward you late spring to early summer with whorls of flowers in colors of pink, red, purple or white.
2. Black-Eyed Susan
Placed in full sun, black-eyed Susa (Rudbeckia fulgida) will grow 2 to 3 feet tall. From mid-summer to early fall, black-eyed Susan produces daisy-like blooms of yellow-orange with a brown center. Black-eyed Susan is cold hardy in USDA zones 3 to 9.
3. Tartarian Daisy
The mauve colored petals of tartarian daisy (Aster tartaricus) appear in late summer and into early fall on top of stems 3 to 4 feet tall. Plant tartarian daisy is full sun in USDA zones 3 to 8.
The springtime blooms of astilbe (Astilbe x arendsii) display like tiny blooms of white, pink or burgundy on a feathery stem. Astilbe, which is cold hardy in USDA zones 3 to 8, grows in full shade to part sun and reaches 18 to 24 inches tall.
5. Purple Coneflower
Purple Coneflower (Echinacea purpurea) grows 2 to 4 feet in USDA zones 2 to 10. This coneflower prefers full sun but can tolerate part shade. The daisy-like blooms of purple coneflower appear from summer into early fall.
6. Winter Aconite
Presenting yellow blooms in late winter to early spring is winter aconite (Eranthis hyemalis), which grows to about 6 inches tall. Plant is USDA zones 3 to 7.
7. Grecian Windflower
Preferring light shade, Grecian windflower (Anemone blanda) grows 6 to 12 inches tall. Spring time bloom colors may be white or shades of pink, blue or purple. Grecian windflower is cold hardy in USDA zones 5 to 10.
8. Common Sneezeweed
Common sneezeweed (Helenium autumnale) grows 4 to 6 feet tall. They produces blooms of yellow, orange or maroon in late summer to early fall. Plant common sneezewood in full sun in USDA zones 3 to 8.
9. Dame’s Rocket
Growing 3 to 4 feet tall in full sun to part shade and producing white or lavender colored blooms, Dame’s Rocket (Hesperis matronalis) is very easy to grow. In some areas, it is considered invasive. To curb the flower’s enthusiasm to spread uncontrolled, plant in an area surrounded by pavement.