How to Grow Avocados Indoors
- 1). Remove the seed from the avocado and wash it to remove all traces of fruit residue. These seeds are large and glossy and clean easily with a soft cloth. Set the seed aside to dry for a day or two.
- 2). Fill a pint-size jar to within 1 inch of the rim with tepid water. Locate the top and bottom of the seed. Most avocado seeds are pointed at the top and rounded or flattened on the bottom.
- 3). Insert a toothpick into the flesh of the avocado pit to a depth of ¼ to ½ inch, depending on the size of the seed. The toothpick should rest slightly below the ½-way mark on the seed with the pointed end facing upward. Insert a second toothpick at the opposite side of the seed. Add a toothpick equal distance between the first two toothpicks. Repeat to create four toothpicks at equal distances.
- 4). Rest the toothpicks on the rim of the Mason jar so the bottom of the seed rests in water. Place in a warm location where the water remains warm to speed germination. Avocados may sprout as soon as ten days when maintained in a warm environment, but may take up to five weeks.
- 5). Watch for the emergence of a thick white root from the bottom of the seed. Don't worry if the seeds splits, this is normal and will not damage your plant. Keep the seed emerged in water at all times. Change the water if it becomes stagnant or cloudy. A short time after the emergence of the root, leaves emerge from the top.
- 6). Grow the avocado plant in the jar of water until it reaches a height of 8 inches and forms several sets of leaves. Pot the young seedling in an all-purpose potting soil and place it in a sunny location. Keep the soil evenly moist.
Source...