Begonias are magnificent, vigorous and highly decorative plants, with their abundant flowering lasting several months. While there are all sorts of begonias, certain trailing varieties create a stunning cascade of mixed flowers and foliage. Low-maintenance and undemanding, they are ideal for hanging flower baskets. Discover our step-by-step tutorial to create a beautiful, voluminous hanging basket or balcony planter with begonias.


Before you begin: When should you create this begonia hanging basket?

Begonias cannot tolerate frost. The bulbs are usually planted in May, once the risk of frost has passed. They can also be planted under cover, such as in a greenhouse, as early as February.

1- Choosing the right hanging basket:

Ideally, choose a hanging basket around 40 cm in diameter. Begonias dislike excess water, so opt for a basket with drainage holes at the bottom, or better yet, one with an integrated saucer. If there is no drainage, you can drill a hole using a drill or a pointed tool (such as a screwdriver) tapped with a hammer.

A hanging basket with drainage holes and an integrated saucer.

2- Drainage:

Place a layer of clay pebbles at the bottom to facilitate drainage and water flow. The pebbles will prevent water stagnation and limit root mould formation.

A layer of clay pebbles improves drainage.

3- Adding compost:

  • Use a hanging basket compost or one for "geraniums and flowering plants", which will perfectly suit begonias' needs. The plant will then have the essential nutrients for healthy growth. Avoid using so-called "universal" compost, which will be too poor for your plants.
  • Fill the basket with compost up to halfway.
  • Using a spray bottle, water the compost thoroughly, preferably with rainwater, which is less chalky than tap water.

4- Adding your begonia bulbs:

Select healthy begonia bulbs free from mould. Position them with the pointed end facing upwards. For a 40 cm diameter hanging basket, space 4 to 5 begonia bulbs evenly.

5- Covering and watering:

  • Cover your begonias with compost, then firm it down well to ensure good contact between the bulbs and the growing medium.
  • Using a watering can or spray bottle, water your hanging basket generously with a fine spray until water drains from the bottom.

6- Maintenance and overwintering:

  • Water your hanging basket regularly when the compost dries out, but avoid overwatering. Begonias dislike excess moisture, so the compost should stay moist but not waterlogged. Monitor and increase watering during hot spells. Note: Compost in hanging baskets dries out faster than garden soil.
  • Begonias can be prone to powdery mildew. To prevent this, water directly at the base of the plant, avoiding wetting the foliage.
  • Place your hanging basket in sun or partial shade, but avoid scorching afternoon sun, especially in warmer regions.
  • Begonias are highly sensitive to cold. However, they can live for several years if kept in good conditions. During winter, you can bring your hanging basket indoors to a greenhouse, conservatory, or even inside the house. The room should be bright and well-ventilated. Reduce watering during this period.
  • In spring, repot your begonias to refresh the compost.
  • To encourage long and abundant flowering, apply fertiliser regularly, either a liquid feed or a slow-release fertiliser such as Osmocote® Exact 6-month cones.

A beautiful begonia hanging basket kept indoors during winter.

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