How to Grow an Avocado Tree from Seed

Pierce an avocado seed with toothpicks, suspend it over water with the pointed end up, and wait 2-6 weeks for roots to develop before transplanting to soil.

  1. Start With a Clean Seed. Remove the seed from a ripe avocado and wash off all fruit flesh under cool water. Pat dry with a paper towel. The seed should be completely clean with no residue remaining, as leftover fruit can cause rot.
  2. Build Your Support System. Push three or four toothpicks into the seed at its widest point, spacing them evenly around the circumference. Insert them about halfway into the seed at a slight downward angle. These will support the seed over the water container.
  3. Suspend Over Water Correctly. Place the seed pointed-end up in a clear glass or jar filled with water. The toothpicks should rest on the rim, keeping the bottom half of the seed submerged while the top stays dry. The water level should cover the bottom inch of the seed.
  4. Choose the Perfect Spot. Set the container in a warm spot with indirect sunlight, like a kitchen windowsill. Avoid direct sun, which can overheat the water. Room temperature between 65-75°F works best for germination.
  5. Keep Water Fresh Always. Replace the water every 3-4 days to prevent bacteria and mold growth. Rinse the seed gently each time you change the water. Keep the water level consistent so the bottom of the seed stays submerged.
  6. Watch the Magic Happen. Watch for a crack to appear at the bottom of the seed after 2-6 weeks. Roots will emerge first, followed by a shoot from the top. The process can take up to 8 weeks, so be patient and keep changing the water regularly.
  7. Move to Soil With Care. Once the roots are 3-4 inches long and you see leaves forming, plant the seed in a 6-inch pot with well-draining potting soil. Bury the seed halfway, leaving the top exposed. Water thoroughly but avoid overwatering.
  8. Shape Your Growing Tree. Place the potted plant in bright, indirect light and water when the soil feels dry to touch. Pinch off the top leaves when the stem reaches 6 inches to encourage bushier growth. Expect slow growth in the first year.