How to Grow Strawflowers

Written by jenny harrington Google
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Though technically a perennial, strawflowers are typically grown as summer annuals as they don't overwinter well in areas with cold winters. The plants grow up to 3 feet tall and produce large, 5-inch diameter flowers. Most strawflowers are yellow, though lavender, pink and white varieties are also available. The plants readily self-seed in the garden each fall, or you can save the seeds from your current plants for replanting next spring. Sow seeds a week before the last expected spring frost to ensure the flowers begin blooming early in the summer.

Skill level:

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Things you need

  • Rake
  • Soluble fertiliser

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  1. 1

    Rake the soil surface in a full sun garden bed that has good drainage. Break up any large clods of soil and smooth the bed for seeding.

  2. 2

    Sow the seeds on the soil surface, spacing the seeds 3 to 4 inches apart in each row. Press each seed lightly into the soil but don't cover the seed. Strawflowers require light for germination.

  3. 3

    Mist the garden bed with water every three to four days so the soil remains moist to a depth of 2 inches. Avoid overwatering, which results in muddy soil or standing water.

  4. 4

    Thin the seedlings once they produce their second or third set of leaves. Pull up the excess strawflowers so the remaining plants are spaced 8 to 12 inches apart in all directions.

  5. 5

    Supply approximately 1 inch of water weekly in a single deep watering, which is enough to moisten the top 6 to 8 inches of soil.

  6. 6

    Fertilise the strawflowers once monthly with a balanced soluble fertiliser. Apply the fertiliser at the rate recommended on the label for flowering annuals.

Tips and warnings

  • Strawflowers can also be started indoors and later transplanted to the garden. Sow the seeds indoors in pots six weeks before the last expected spring frost.
  • Strawflower blossoms retain much of their colour when dried, making them suitable for dried floral arrangements. Hang the blossoms upside down in a well-ventilated area for one to two weeks, to dry them.

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