How to Scarify Macadamia Seeds


Macadamia nuts are a popular variety of nuts, enjoyed for their crisp and light taste. A macadamia tree grows from a single seed, but may take as long as 12 years before providing any macadamia nuts for harvest. A gardener must properly prepare macadamia seeds prior to planting to improve the probability that the seed will germinate. Because of the hard outer covering of the macadamia seeds, the gardener must first scarify the macadamia seeds before sowing. Scarifying seeds is the process of breaking through the outer seed layer to enable moisture to penetrate into the inner seed to facilitate germination.

Step 1

Use the metal file to file through the outer covering of the seed. File until the outer covering is broken through and you can see the inner seed.

Step 2

Fill the small container with water that is between 70 and 80 degrees. Place the macadamia seeds into the warm water.

Step 3

Leave the macadamia seeds in the water for 2-3 days.

Step 4

Fill the planting container to the top with potting soil. Remove the macadamia seeds and place one seed in each container. Cover the seed with a layer of potting soil equal to its size and water with the spray bottle.

Step 5

Keep the planting container in a location that is at least 80 degrees. Water the soil daily with the spray bottle. Watch for germination in approximately one month.

Things You'll Need

  • Metal file
  • Small container
  • Warm water
  • Thermometer
  • Planting container (one container per seed)
  • Potting soil
  • Spray bottle filled with water


  • Macadamia Seeds
Keywords: macadamia seeds, macadamia nuts, scarify the macadamia seeds

About this Author

Kathryn Hatter is a veteran home-school educator and regular contributor to "Natural News." She is an accomplished gardener, seamstress, quilter, crocheter, painter, cook, decorator and digital graphics creator and she enjoys technical and computer gadgets. Hatter's Internet publications specialize in natural health and she plans to continue her formal education in the health field, focusing on nursing.