How to plant a trough planter?
To ensure the trough planter has sufficient drainage, place a 5-10cm (2-4inch) layer of gravel evenly across the bottom of the water trough. On top of the gravel, place a piece of textile membrane along the trough. This will keep the soil in place, stopping it from washing away under the gravel when watered. Deep trough planters are particularly popular for urban gardens and screening. Start with a lightweight filler at the base, add a drainage layer, and then fill two-thirds with a quality soil mix. For tall plants such as bamboo, stake them securely and water well until established, as they will be more exposed to wind.