The Begonia Novelty On Top Pink Halo, Begonia Novelty 'On Top PInk Halo', is a beautiful begonia with pink and white colored blooms. Our On Top Begonias are the best available PIcotee for containers. They are the most heat tolerant and are as quick to grow as Non-Stop Begonias but better branched and produce more flowers. Begonias prefer moist, well-drained soil with plenty of humus. Pinch off the first few buds to encourage larger, more vigorous growth. Water abundantly during bloom period. In fall dig up the bulbs before the first night frost and store over winter in dry peat, in a cool dry place.