From time to digging up the bulbs before cutting flowers is divided into three periods: summer storage onions, cooling-off period and, in fact, distillation, when there is active growth of aboveground plant parts. Often the concept of 'forcing' applies to any process for flowering plants in terms other than natural. Taking the day when the flowers should open up and to please the holiday, away in the opposite order is counted duration of the forcing to date. It is important to start cooling the bulbs only once completed the formation of primordia of flower buds in them. Premature cooling (when usually try to catch bulb to expel the New Year), leads to the formation in tulips and daffodils for the Blind (dried) flower buds, while the water hyacinth – a lack of or very weak staining of flowers in the inflorescence. In this connection, not all varieties are suitable for forcing early is always better to give preference to forcing the earlier varieties of garden tulips, daffodils and other than the middle or late. Special bulbs warming accelerates the formation of primordia of flowers around for 2 weeks.
Reduction or delays in holding a cooling-off period also leads to a sharp decrease in the length of the flower hyacinth. The increase in cooling-off period for hyacinths and daffodils reflected in lengthening their stems, which makes vobschem flowers more attractive. Bulbs for forcing hyacinth choose the most strong and healthy, large, extra-class. Mr. distillation planted in any boxes and pots, close to each other.