FIRST, you need a planting vessel
plastic bottles
NEXT, you need to remove the neck of the bottle then cut holes around it. You can use a scissor or a heated metal tool to make the holes. Make sure the holes are just the right for the onion bulbs
CUT BOTTLE
NEXT, fill the bottle with layers of onion sprouts and soil
LAYER
TOP VIEW
Keep adding layers until you reach the top of the container
.NEXT, water it