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Flowers to Plant in Spring That Will Bloom All Summer

The most reliable continual blooming plants are annuals, which grow, flower, set seed and die in one growing season. Many annuals are easy to grow from seed. An alternative is to buy them already in bloom. Whether you transplant flowers you grew, or ones you bought, remove any flowers that are blooming at the time. This gives the plant a better chance to establish a good root system.
  1. Petunia

    • The wave petunia grows fast, blooms long and covers a large area.

      The wave petunia has revolutionized this old-fashioned favorite. Unlike other petunias, the wave petunia does not require deadheading to produce blooms all summer long. Deadheading is the removal of faded flowers. The wave petunia quickly covers the area where it's planted. It is an excellent choice for an edging plant. It looks great planted at the edge of a window box or flower pot where the flowers can spill over the edge and cascade down. Wave petunias grow best in full sun, are disease resistant, tolerate a wide variety of weather conditions and are very heavy bloomers, according to Clemson University Cooperative Extension.

    Impatiens

    • Hybridized impatiens can grow in full sun.

      Impatiens is a shade-loving annual, with the exception of new hybridized impatiens that grow well in full sun. Most varieties are low growing, making them excellent border or container plants; however, Impatiens balsamina will grow as tall as 2 ½ feet, according to Iowa State University. Plant impatiens outdoors in moist, well-drained soil that is high in organic matter, after all danger of frost is over. Impatiens benefit from fertilizer applied according to package directions every two weeks during the growing season.

    Marigolds

    • Marigolds bloom nonstop from spring through fall.

      Marigolds come in an array of bright colors, including red, orange, yellow and white. Some have flowers with single colors and some have multicolored flowers. To keep marigolds from growing taller to hide the spent blooms, deadhead them, advises Washington State University County Extension. Marigolds are easy to grow from seed. At the end of the season, allow the plants to set seed so you can save seeds to plant the following year. Remove seed from the plant when the dead flower is hard to the touch.