Introduction: Grow Avocado Tree
First, wash well the seed, get 3 toothpicks and stick the tip at 120 degrees(like a propeller) and a little tilt up so the seed stays in water at least 80% and just the top is out of the water.
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Fill up the glass (plastic, glass, whatever) with rain water(no tap chlorinated-fluorinated water=no plant would like to drink that) and place it to the window for the light and warm environment, and wait a month, filling up every week the evaporated water, and keep almost the whole seed under water, just the tip out.It will crack in half, grow a root down and the green plant up.Good luck folks! Mine is one year old now and 50 cm high.