Instructables
video Bottle Towers - Tours de bouteilles
PET bottles stacked into a bottle tower can be recycled to set up a vertical kitchen garden at home.  The bottle towers are used for container gardening of vegetables and herbs. How to build such a tower is shown in different steps.

Des bouteilles en PET, empilées dans une tour de bouteilles, peuvent être recyclées dans un potager vertical à domicile.  Les tours de bouteilles servent à la production de légumes et herbes en récipients.  Il est montré en étapes consécutives comment construire une telle tour.
armorlord1 year ago
would these towers work with 0.5L water bottles? would they not contain enough soil for plants to grow?
wvan cotthem (author)  armorlord1 year ago
This idea of working with small volumes of soil in bottles came from the observation that trees can grow in slits on rocks, that trees and shrubs can grow in gutters, that lots of flowering plants can grow on humid walls (rooting in and between humid bricks. So, why would some vegetables and herbs not grow in small bottles, e.g. 0,5 liter ones ? They do !