Posted to Instructables by njacksx
Step 1:Hardware
- 2l soda bottles.
- Scrap wood, bamboo sticks, PVC or similar for frame.
- Wood screws.

Step 2:Tools
- Knife to cut tops off.
- Drill press / hand drill to drill holes through the bottle neck and to screw frame together.
- Screwdriver.
- Hand saw to cut scrap wood to size.
Step 3:Cut soda bottles
Cut top of bottle off as shown.
Step 4:Drill soda bottles
Drill bottle neck as shown.
Step 5:Build a frame
Build a frame to hold your bottles as shown in the two sketches. Note that the opening of the lower bottle must be screwed to the top bottles' neck. I have not used any measurements because you can make your own custom size. I have made a 5 column X 3 row frame. This could be made to any configuration.
Step 6:Screw bottles on frame
Screw bottles on frame.
Step 7:Stones, potting soil, planting and watering
Put stones in the bottom of each neck for drainage. Fill with potting soil. Plant seeds or seedlings and water.
Good luck.

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Tina C. says:
This is so smart! I can't wait to share this. Keep the great ideas coming!
Diana Budds says:
You can also cut plastic soda bottles in half and use them as mini-greenhouses for seedlings in your garden.