One of the most important prerequisites for the healthy growth of the planting is a sufficiently dimensioned temperature control of the entire interior in a warm house that is operated all year round. Not only does the greenhouse temperature have to be right, it should also be as constant as possible.
Every plant has its own ideal temperature
Unlike a heated cold house, where winter temperatures are usually only between +2 and 12 °C, temperature-controlled greenhouses are a bit warmer. The year-round greenhouse temperatures drop here in favor of plant growth not below 12 to 18 °C so that summer flowers can bloom under glass and crunchy winter vegetables can grow even in the heaviest January frost.
A little chubby - the warm house
18 to 24° are the standard for warm houses, an energetic challenge in winter. But even on hot summer days, a very complex temperature control must be available, which controls the existing shading systems and the regulation of the plant-healthy air humidity. Different types of plants differ significantly in terms of their heat requirements, even between day and night, so that a new greenhouse to be built is already considered during the early planning phase suitable heating installation must be thought. Some examples:
| plant type | optimal daily temperature (°C) | optimal night temperature (°C) |
|---|---|---|
| lettuce and tomatoes | 24 | 12 |
| melons and cucumbers | 28 | 18 |
| robust vegetable plants | 20 | 8 |
tips
Even if your greenhouse heating is technically able to generate such indoor temperatures, covering the house with well-insulating materials is and remains mandatory. Because extreme temperature fluctuations have to occur, especially with tropical plants reduced to a minimum remain.