Euphorbia pulcherrima is getting more popular. Its decorative upper leaf rosettes are colourful (red, pink,
white This is typically a short day plant. It is a water demanding plant, so it can be used in hydroponics. This
growing method is getting more importance in our days, because closed-cycle system satisfies the strictest
environmental requirements. The growing was taking place in two growing houses, the French Filclair plastic
house and Prmeur-1 German glass house.The purpose of the research was to compare varieties and the effect
of the two growing houses. According to our findings the height of 'Freedom Red' – as a medium growth
variety- exceeded that of 'Cortez Red' and 'Cortez White' varieties. The number of laves of 'Cortez White'
variety exceeded the two other varieties. As for the diameter of the rosettes 'Freedom Red' variety had the
best quality, as these were the biggest. By comparing the two growing houses (Filclair plastic and Primeu-1)
we found that growing houses did not influence the quality (height, number of leaves, diameter of upper
leaves) of the flowers at any of the 3 varieties
