To protect workers' health, labour-intensive plants are grown in pots on tables, or on assembly lines of trays. Producers want to be able to offer their products year-round, which requires accurate climate control in greenhouses. Climate factors such as temperature, humidity, and increasingly, CO 2 levels and light quantities are all regulated automatically. The flowering of a plant is stimulated by artificially extending the hours of daylight while flower size and number of blossems are regulated by assimilation lighting. The high degree of specialization is typical for Dutch floriculture.
Many growers produce only one crop, or somethimes even just one cultivar.
This is possible only when a grower knows he can sell his product at a fair price. Such extreme specialization is therefor limited to products for which demand is high and constant. Mixed production reduces the grower's risk with limited demand products. However, the efficient system of distribution through the auctions provides growers with maximum opportunity for specialization. The drawback to specialization is that it complicates the control of soil diseases.