What are the varieties of upside-down admiralty and how to manage them?

Also known as begonia, perennial evergreen shrub, Salicaceae, begonia.

There are red dragon, girl skirt, red calyx, multicolored, pink, gold medal, good luck, big fortune, chorus, hanging flower fairy, Guangyao, Bai Meiren, Blue Moon, Osep, black eye, Bai Baijia and Chabbert. There are white calyx red petals, red calyx white petals, pink calyx red petals, red calyx red petals, red calyx blood blue petals and white calyx yellow petals. There are also large flowers, double petals, many colors and few varieties.

Sex likes a cool and humid environment, is afraid of hot, high temperature and strong light, and avoids rain when flowering. The optimum growth temperature is 10 ~ 20℃, when it exceeds 30℃, it enters semi-dormancy, and when it exceeds 35℃, the leaves fall off and die. Suitable for growing in loose, fertile and well-drained sandy loam. Cutting propagation is the main method, vermiculite, perlite and plain sand are mixed in equal amount, and tender branches are taken for cutting in March and April, and roots are born at 22-25℃ 15-20 days. Pot soil is made of humus soil, garden soil, humus soil and manure according to the ratio of 3: 4: 2: 1. From March to May, 1∶6 cake was fertilized once a week, and/kloc-0 was watered for 2 days. To control fertilizer and water in summer, it is advisable to dry the pot soil slightly at noon without wilting. After 9 months, fertilizer and water can be restored, and 0.2% potassium dihydrogen phosphate can be chased for 2 ~ 3 times. When the seedlings grow to 3 pairs of leaves, leave 2 leaves for coring, and when they grow to 3 ~ 4 pairs of leaves, leave 5 ~ 7 main branches, and turn over the pots to make the plants plump. 65438+ 10 entered the room in late October, and the room temperature was kept at 10 ~ 15℃ to control botrytis cinerea, root rot and whitefly.