Brightness for shaded spots
White-flowered begonias are a favourite for shady courtyards because the flowers show up even in low light. In wax begonias, the white flowers often sit on green or bronze leaves, and the contrast is part of the charm. Tuberous types give large, layered white flowers that can look like a camellia or a rose.
Reading the weather
White petals show every mark, so a few simple habits make a difference.
- Water at the soil, not over the flowers, to avoid brown spotting.
- Remove faded blooms quickly, since spent white petals turn brown and look untidy.
- Provide bright shade rather than direct summer sun, which scorches pale petals.
- Keep air moving around plants in humid Sydney and Brisbane summers to reduce mildew.
Regions that suit white begonias
Sub-tropical and warm temperate coastal gardens are ideal for wax and cane types. In Melbourne and Hobart, tuberous begonias are the better choice and flower from summer into early autumn. In the tropical north, wet-season humidity suits many begonias, but heavy rain can rot the stems.
Weddings and gifts
A potted white begonia is a lasting gift, and white is a traditional colour for weddings and remembrance. The flowers last longer in a pot than in a vase.
Keep white begonias out of reach
In the ASPCA's database, begonias are marked as harmful to dogs, cats and horses because of soluble calcium oxalates. The buried parts are the worst, so place pots where animals cannot dig.
