In order to plant and grow your own avocado tree next time don’t throw away the seed.
First, you need to remove the seed gently. Wash it, or just soak it in the water for a few minutes, then scrub it well. Important note: keep the seed cover, the brown skin.
Then, pierce it. The avocado pit has two ends, the top from which grow the sprout and the bottom, from where grows the root. The top is a bit pointier, and the bottom is flatter.
Put the bottom of the pit in some water, so it can sprout. After soaking, gently wedge in toothpicks. The toothpicks should point down. This will leave a larger part of the pit in the water.
Leave it like that for 3-6 weeks to sprout. After this time, the sprout will come out from the top, and the roots at the base.
When the stalk is long about 5-6 inches, you should pinch out the top leaves. In a few weeks, the new leaves will grow and no more roots.
After some time, when the sprout tail is 6-7 inches, trim it in half. That way you will stimulate a new growth.
Then, take a large flowerpot (8”-10” across) and put enriched potting soil in it. It should be an inch from the pot’s top.
In the center of the soil make a small depression and put the pit, root-side down.
The avocado pit needs to be in a really moist soil, so water it generously.