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How to Seed Hydrangea


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Hydrangeas can survive in both northern and southern climates of the United States and grow as medium-sized shrubs with large, bushy flower blooms. The flowers are typically pink, blue, white or purple and some varieties change color based on the soil acidity. Although hydrangea plants are readily available at garden centers in the spring and summer, you can also grow your own. Growing hydrangea seeds is similar to growing other seed types.

Difficulty: Easy

Instructions

Things You’ll Need:

  • Hand pruners
  • Plastic sandwich bag
  • Refrigerator
  • Seed tray
  • Potting soil
  1. Harvest the seeds from a hydrangea bush in the fall months once the flowers turn completely brown. Place a clear plastic sandwich bag over the flower and cut the stem off with hand pruners.

  2. Hold onto the stem but turn the bag upside down so that the flower head faces downward. Shake the stem until you see the tiny brown seeds fall to the bottom of the bag. Remove the flower stem and discard it.

  3. Seal the bag tightly and place it in the refrigerator until late February or early March.

  4. Fill a seed tray with potting soil until each of the compartments is 3/4 full.

  5. Water the soil until it is moist all the way to the bottom of each compartment.

  6. Remove the sandwich bag from the refrigerator and sprinkle the seeds evenly into each compartment. Since the hydrangea seeds are so small, it’s not possible to count them out.

  7. Keep the soil watered if it starts to dry out and the hydrangea seed will germinate in approximately two to four weeks.

Tips & Warnings

  • When the hydrangea seedlings outgrow the seed tray, transplant them outdoors once the threat of frost passes for your area.

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