Begonia 'Double Dot' is a striking cultivar of Begonia, highly valued for its dark, angel wing-shaped leaves adorned with numerous silvery-white spots. This plant showcases vibrant dark green foliage that often has a subtle sheen, dramatically contrasted by an abundance of silvery dots, and typically a reddish or burgundy underside. In warmer months, it may produce delicate clusters of dusty pink flowers. Its eye-catching foliage makes it a popular choice for adding intricate pattern and color to indoor plant collections in the UK. It is a member of the Begoniaceae family.
The genus name Begonia honors Michel Bégon, a French patron of botany. 'Double Dot' is a cultivar name, likely referring to the profusion of prominent spots on its leaves. This cultivar is closely related to Begonia maculata.
Light: Begonia 'Double Dot' thrives in bright light that is not direct. Strong, direct sunlight can harm its leaves, potentially causing scorching or a fading of the spot patterns. Insufficient light may result in slower growth and less vibrant coloration. A position near a window that receives filtered light in a typical UK home is ideal.
Water: The potting mix should be kept consistently damp but not saturated. Allow the upper inch or two of the soil to dry between waterings. Ensure the pot drains exceptionally well to prevent root problems, which can be an issue, especially in the UK's climate. Reduce watering in autumn and winter when the plant's growth naturally slows.
Soil: An airy potting mix that drains well is essential. A standard houseplant compost, possibly amended with perlite or fine orchid bark to improve air circulation and drainage, is often recommended.
Fertilising: Use a diluted liquid fertiliser every two to four weeks during the active growing period in spring and summer. Reduce or stop fertilising during the autumn and winter months.
Temperature: This plant prefers warm temperatures, ideally between 18°C and 27°C. It should be shielded from cold draughts and sudden temperature changes, which can occur indoors, particularly during colder UK months. Temperatures below 15°C may cause distress or leaf drop.
Humidity: Higher humidity levels are beneficial for Begonia 'Double Dot'. Consider using a humidifier or placing the plant on a pebble tray with water to maintain optimal conditions, especially during drier indoor periods in the UK. Avoid getting water directly on the leaves too frequently, as this can sometimes lead to spotting or fungal issues on the velvety surface.
Growth Habit: It typically exhibits an upright, cane-like growth habit, though it can branch to form a bushy plant. Regular pinching or pruning can encourage a fuller shape. It may benefit from a small support as it grows taller.
Toxicity: Begonias, including 'Double Dot', are toxic if consumed by humans or pets.