Vegetables and fruit need plenty of sun to ripen. A location with full sun for at least eight hours of light per day should therefore be chosen for the raised bed. High levels of sunlight also prevent the spread of diseases such as the dreaded powdery mildew.
However, it is possible to grow plants on balconies with less or even very little sunlight. Edible plants with lower light requirements are ideal for this. The choice is just as wide – lamb's lettuce, strawberries, chard, many herbs as well as berry bushes, can also manage with five to six hours of sunshine.
Vegetable varieties for semi-shade or shade:
- Wild strawberries
- Lamb's lettuce
- Broccoli
- Cauliflower
- Peas
- Beans
- Radishes
-
Beetroot
TIP: When planting a raised bed, make sure that the taller varieties are set at the back so that they do not take sunlight away from the lower-growing plants.
Preparation – filling the raised bed
To prevent waterlogging, which would encourage root rot and fungal infestation, a drainage layer of expanded clay or clay shards should be placed at the bottom of the raised bed before the soil goes in. Ideally, fill about a quarter of the raised bed with this layer.
Place a fleece on top of it to prevent soil particles from being washed into the porous layer and thereby blocking free-flowing drainage after watering. Holes in the base ensure that water drains away.
To round off, fill the raised bed with finely crumbled, peat-free vegetable soil – and now only the small seedlings are missing.