Nice way to recycle plastic bottles and grow your own food. :-)
Step 1: Material List
a) a plastic soda bottle (empty)
b) a piece of cotton string
c) sharp knife
d) hot piece of wire to make a role in the bottle lid
e) some dirt with seeds
f) little patience.
Step 2: Cut the bottle
First empty the soda bottle, and cut it in two. Note that the bottom part should be bigger than the top part! Be careful.
Step 3: The lid
Use the hot wire to make a role in the bottle lid. A small role will do. Pass the cotton string trough the bottle lid.
Step 4: Assemble
Put the lid back in the bottle, and turn it upside down. Cut the cotton wire and make sure its length is the same as the whole thing.
Step 5: Add dirt+seeds
Now you add the dirt with seeds. Make sure the cotton string is strait.
Add water to the bottom part of the bottle, you do not want to put too much water in it.
The water should not touch the lid.
Step 6: Let it grow!!
Add water only in the bottom part, never trough the top of the vase, otherwise the water will come down with dirt and algae will start to grow.
Water will come up and will keep the earth moist.
Plants will grow nicely.
Any ideas are welcome.