Tulip bulbs need a temperature treatment to bloom on a specific date.
After the harvest the tulips need a warm period. In the warm storage the tulipbulb develops to stage G.
Flower development stages
Stage I Sheet-forming period.
There is still no flower instance; the growth point is slightly angular in the middle.
Stage II beginning of flower instance.
The growth point is now globe.
Stage P1 is the stage outer Crown of petals is formed.
Stage P2/A1 the inner whorl of petals is formed.
Stage A2 the inner whorl of stamens.
Stage G the stamper is formed.
Tulips need a cold period for the thrust of the stems. The winter cold is imitated in the cold store. In this way, flower bulbs thrive rather than their natural flowering date.
The temperature in the greenhouse plants should be around 9 ° c so that the tulips can carrots. This will take at least three weeks and after rooting the temperature can be increased to about 18 ° c. The tulips will grow from three to four weeks to the bloom, depending on the type of.
Breeds and groups the Tulip varieties are divided into several groups: