Spring flowers from bulbs and tubers

In common parlance, tuber plants are often referred to as bulbous plants, although there is a slight difference: tuber plants such as crocuses, dahlias and gladioli consist of a thickened root, while bulbous plants such as tulips, daffodils and hyacinths consist of several layers. When planting, however, it does not usually matter whether they are bulbs or tubers.

Bulbs and tubers are easy to care for and simple to plant. However, there are a few important tips to bear in mind: make sure that bulbs or tubers are firm, dry and with smooth skin - this indicates freshness. Choose larger bulbs or tubers, as these often produce stronger plants. Choose well-drained soil and a bright, sunny location. Crocuses can also be planted on the lawn.

Choose a planter that is at least 20 to 25 centimeters deep. If there are several bulbs, the pot should be wide enough. Ensure good drainage: a clay shard over the drainage holes prevents them from becoming blocked. Place a layer of pumice granules on the bottom of the pot to prevent waterlogging. Plant the bulbs twice as deep as they are tall and water the soil well. A layer of wood chips or bark mulch provides a decorative cover and keeps the moisture in the soil for longer. Place the pot in a bright, warm spot on the balcony or terrace.

As most tuberous plants originate from the Mediterranean region, they prefer loose, slightly sandy soil. Improve heavy soil with a little sand or gravel so that the water can seep away well and does not accumulate. Dig planting holes for the tubers in the prepared soil. The depth depends on the size of the tubers; as a rule, the hole should be two to three times as deep as the height of the tuber. The looser the soil, the deeper you can bury the tubers. Place the tubers so that the roots are pointing downwards. If the tubers already have green shoots, these should protrude from the soil.

These flowers thrive best in evenly moist soil. Make sure that the soil does not dry out, but also that there is no waterlogging. The flowers need regular watering, especially during dry weather. To promote flowering, regularly add liquid flower fertilizer to the watering water. Protect the flowers from frost by covering the soil with a layer of mulch and wrapping the pots in fleece. Place them in a sheltered spot, such as a house wall or covered terrace. Particularly sensitive varieties should be moved to winter quarters in the event of heavy frost to avoid cold damage.

For bushy flowerpots, different bulbs can be buried in layers. Start with the largest bulbs, planting them at the bottom about 5 cm apart. Cover them with substrate and then place the next smallest bulbs in the gaps of the first layer, which should also be covered with soil. Small bulbs only need a planting depth of around 5 cm and are placed directly below the soil surface. If you plant these bulbs close together, but not touching, you will create a dense spring garden. Press the soil down lightly and then water.