Keep big container gardens light enough to move by filling the bottom third with lightweight plastics. Upside down flower pots and an empty lidded juice bottle neatly fill space in the bottom of the pot and won’t rot during the course of many growing seasons. Using plastics in the bottom of pots also saves on soil—saving you money. Plastics promote healthy plants by providing an air pocket for plant roots, which helps to prevent waterlogged soil, even during the wettest seasons. Where to find possible space fillers for large planters? Raid your recycling bin, choosing rigid plastics over softer, milk jug-types.
