Cut a plastic bottle in half and bury the bottom portion up to its rim in the soil near plants that are being damaged by slugs. Fill it partially with beer — slugs are strongly attracted to the yeast and fermented smell — and leave it overnight. Slugs entering the trap cannot climb out and will drown in the liquid. This is one of the most reliably effective organic slug control methods available, well-documented by gardeners and organic growers, and the plastic bottle bottom makes a perfectly proportioned container for this purpose. Replace the beer and remove the accumulated slugs every day or two during peak slug activity, which is most intense after rain and during humid, mild weather.
A simpler version that works as a physical barrier rather than a trap: cut the bottom from a bottle and remove the cap, then push the resulting open cylinder several centimeters into the soil around the base of a young plant. The smooth, upright sides of the plastic create a barrier that slugs find difficult to cross, protecting the plant inside without any chemicals or traps that require regular maintenance. This collar also keeps caterpillars and other soil-level pests away from the base of the stem during the most vulnerable stages of growth.
8. The Vertical Garden — Maximum Plants in Minimum Space
Multiple plastic bottles can be mounted on a fence, wall, or wooden frame to create a vertical garden that grows plants upward rather than outward — an invaluable approach for balconies, small patios, apartment courtyards, and any space where ground area for gardening is limited or nonexistent. Cut an opening in the side of each bottle large enough to fill with soil and plant a seedling, drill or poke drainage holes in the opposite side, and mount the bottles on the structure using wire, clamps, hooks, or screws through the base. Succulents, herbs, strawberries, lettuces, and trailing flowers are all excellent candidates for this system. A single fence panel can accommodate dozens of bottles, producing a genuinely impressive growing surface from materials that would otherwise have no value at all. The bottles can be painted, decorated, or left natural depending on whether visual appeal or pure function is the priority.
