Why are greenhouses important to floriculture in temperate climates?

In temperate climates, greenhouses are essential to floriculture because they allow growers to bypass the limitations of the local environment, enabling the production of plants that would otherwise be unable to survive or thrive outdoors.12

The primary importance of these structures includes:

• Environmental Control: Greenhouses provide a protected space where temperature, humidity, and ventilation can be precisely regulated to meet the specific needs of various flower species, including tropical varieties that would be killed by frost.123
• Out-of-Season Production: By manipulating the environment, growers can force plants to flower earlier than their natural season or maintain production throughout the winter months.3
• Photoperiod Manipulation: Greenhouse operators can control the photoperiod through supplemental lighting or shading. This allows for the year-round flowering of crops like chrysanthemums, which are sensitive to day length.4
• Protection: These structures shield tender plants from excessive cold, heat, and wind, ensuring consistent growth and higher quality yields compared to open-field cultivation.123

By assuming the roles nature typically performs in the field, the greenhouse operator can ensure the successful cultivation of high-value ornamental plants regardless of the external climate.2