Question
Hello, Tom.
How can I make an avocado tree grow from seed.  I've been trying, but I've failed all times.

Answer
Hi Kloie,
Thanx for your question.  If you will use our Search for box at the top of the page you may find your answer quicker as I have answered this question a number of times.  Hope this helps you in the future.

There are two ways you can grow an avocado from seed.  First, plant the pit on its side about 3 inches deep in a large pot of regular potting soil.  Keep the soil moist but free draining and very warm, about 80癋/27癈.  Germination occurs in 30 days to several months.  You can also suspend the seed in a glass of water with tooth picks placed around the crown of the flat end of the seed.  Three or four toothpicks will suspend the pit, point down, in a glass of clean water.  Replace the water every couple of days or when it begins to foul.  The root should appear in 30-90 days.  Warmth is the key to germination.  I hope this helps.
Tom