I love avocados and growing things, and found this to be a fun, simple way to grow beautiful-looking plants from the stones (pits) left over from making guacamole or avocado dip. It takes a while for a stone to grow into a tree, but you’ll have a beautiful houseplant pretty quickly.
There are two ways to start out your seeds:
This particular seed had sprouted inside of the avocado before I had even eaten it. Be careful to not cut any deep gouges when removing the seed. Clean it very well so there are no more bits of avocado flesh left on them (like there happens to be in this photo).
If you are using the toothpick method, stick three toothpicks in the side of the seed about halfway down. You want half of the avocado to be under water. Set it on the rim of a glass or jar and fill it up. The "bottom" is the fat end. Easy enough, right? Refill the water as it evaporates and keep the avocados in a bright window or outside. They will begin to sprout after anywhere from a few days to several months. One of my avocado seeds took three months to sprout, but I've never had one not sprout eventually. When roots begin to fill the glass, transplant the whole deal carefully into a pot.