Flowering is generally 3 to 5 months, there are early, middle and late difference. Colors can not be

Tulips are the characteristics of cold and heat-labile, and can be resistant to -30 ℃ low temperature, during the hot seasons would be transferred to sleep. Hi usually wet, cold climate and the sunny leeward environment, neutral or slightly acidic soils better. A mature tulip bulbs kinds of balls included three generations, or three generations kinds of balls. Big kinds of the ball itself is the first generation of kinds of the ball, with full flower organ differentiation, flowering year after planting. The second and third-generation sub-types of balls as the ball, they can cultivate National Cheng Kung University kinds of balls.

Tulip kinds of the ball must go through a low temperature in order to flower, in the country of origin, generally have sufficient low temperature in winter time, tulip bulbs have access to sufficient low-temperature processing time can be a natural bloom in the spring. In general, used in the production of tulip bulbs have 5 ℃ treatment and 9 ℃ treatment, after treatment the cultivation method is mainly contributed to greenhouse cultivation and planting boxes.

And other southern regions in southern China due to temperature limitations tulip cultivation in the 12 months to February this year within three months of planting. December temperatures in southern China may still be high, this time can be cultivated in the tulip cultivation box, placed in cold storage at about 5 ℃, place 2-3 weeks until the tulip bulbs have long roots and shoots of about 1-2 cm long, and then move it out of cold storage shed placed on the growth of plantations.

Planting tulips in southern China influenced by the climate, the tulip on the temperature-sensitive, if in the South China region, “mild winter” weather, often will cause a large number of early flowering tulips, flower quality is also greatly affected. In order to ensure flowering tulip on time, in the growing season should keep the day temperature of 17 ℃ to 20 ℃, the night temperature 10 ℃ to 12 ℃, the temperature is high by shading, ventilation and lower the temperature, the temperature is too low can be heated when to increase the light to promote growth. Controlling water used to suppress the growth, there will be “dried flowers” phenomenon. Such as continuous high temperature, boxes filled with boxes can be moved to cold storage, pay attention to refrigerator temperature should be about 8 ℃ to 10 ℃, and the best flower stem elongation when shifted, otherwise easily lead to flower buds are stunted. Control of flowering tulip plant growth can also be adjusted. As with the GA soak tulip bulbs to make it bloom in the greenhouse, and can increase the diameter of flowers.