Garden

So you get the greenhouse climate under control

Posted on
Author: Eugene Taylor
Date Of Creation: 13 August 2021
Update Date: 1 July 2024
Anonim
Greenhouse Climate Controls & Automation
Video: Greenhouse Climate Controls & Automation

Content



Shadow nets are a way to provide shade in the greenhouse

So you get the greenhouse climate under control

As optimally as a sun-drenched greenhouse does the seedlings and young plants during the frosty winter and spring months, the more problematic the dry and hot summertime with its extreme temperatures can affect the roofed plants. Tropical heat makes it difficult for the plants, so that even at temperatures above 30 ° C some technical precautions in the greenhouse are required. Why it is like that?

If too much sun harms

The optimum well-being and growth temperatures for greenhouse plants are between 20 and 30 ° C, depending on the genus or species. If windows and doors are closed, extremes of over 50 ° C are reached relatively quickly in summer, which in turn leads to the vital ones Gradually decompose protein compounds and plant enzymes. In addition, there is the so-called glasshouse effect, which physically ensures that short-wave sunlight is converted in the interior to long-wave heat radiation and additionally reflected several times through the glass surfaces.


What happens with heat in the plant?

Under normal temperature conditions, plants use evaporative cooling, which automatically develops on their surface. The higher and faster the internal temperature rises in the glasshouse or foil tent, the more water has to be broken down inside the plant to keep the "normal temperature" constant. However, this form of transformation has its physical limits, so that even in the range between 30 and 33 ° C in the medium term seen with significant changes in the sheet (sometimes even with visible damage) must be expected. Most of the time it only takes a few days before the first long, weak shoots become visible, which may soon die off.

How is a climate-friendly greenhouse understood?

The best and most important thing to do to your plants in the greenhouse is therefore a good climate. Some prerequisites can be created with the purchase of a hothouse equipped with as many vents as possible. In cheap copies of clear glass, which was saved on windows and doors, usually threatens a quick sunburn. It is equally important that these openings are at different heights, because for a healthy climate, a well-functioning and flowing air circulation must be present, which should otherwise be upgraded by an additional fan quasi.


From whiting and shading nets to reeds and cooling interior blinds

As you know, many roads lead to Rome, and garden enthusiasts have at least as many opportunities to retrofit their greenhouse in a plant-friendly and climatically optimal way. A particularly inexpensive, fast and with little effort realizable, alternative shading is a coat of the entire outer shell with a water-whiting mixture. And that goes like this:

Whiting and water - the (almost) free greenhouse shading

By far the simplest and most cost-effective way to retrofit your greenhouse with external shading is painting, rolling or spraying with whiting, for which you need to procure the following materials for a medium-sized house:

Before applying the liquid, which has not been mixed too thickly, the glass panes on the outside should have undergone an at least rough basic cleaning. Whether all sides have to be painted depends essentially on where the afternoon sun is most responsible for the tropical climate inside the house. The washing up of the paint will later be almost self-contained, because with every shower of rain, the paint will have almost completely dissolved by autumn.

Tips

If necessary, remove any leftovers from the glass surface with a special or household cleaner before beginning the next growing season. For plastic-covered houses (double-skin sheets), this method should not be used as this material is very sensitive to scratch marks, which are almost inevitable when removing the paint later.

Shadow nets: high effect for multi-year use

Shade fabric is available in a variety of sizes and strengths in the relevant garden retailers by the meter and will help you reduce the sun's radiation by 50 to 60 percent. With its average weight of 60 to 100 g / m2, this dark green to black colored material is stabilized against UV rays, opaque to light, promoting growth and even hail resistant to a certain extent. The most common standard widths of the nets are:

The average prices at the time of writing are between 1.45 to 1.90 euros per square meter with a material thickness of 60 g / m2. Due to the high temperature and rotting resistance of the fabric, lifetimes of up to five years are not exceptional.

Tips

Make sure that the shading nets are securely fastened and that they find the necessary hold in the ground or in the greenhouse walls with the aid of special clips (with integrated eyelet), ground anchors or pegs or with a suitable net tape.

Shadow dispensers made of reeds - natural and environmentally friendly

Just as effective as the shading nets, which are usually made of synthetic materials, are natural reed mats as multi-year sun protection for greenhouses of all sizes. When assembling the membranes, keep in mind that all existing windows and doors in your greenhouse can still be easily and completely opened in the interests of unimpeded air circulation. If you're not looking for low-priced reed mats in off-season specials, you'll have to expect a purchase price of just over 3.00 to just over 5.00 euros per square meter at most major online retailers.

Interior shading with blinds - a touch of luxury

Of course, the aforementioned shading nets and reed mats are as perfect for indoor installation as they are for the outer shell of greenhouses. Significantly more comfortable, with regard to the individual temperature control are the blinds. Depending on the current intensity of solar radiation, the completely pre-assembled sets can be infinitely adjusted, which ideally leads to relatively constant temperature conditions in the entire interior of your greenhouse.

This luxury has of course its price: So we have a 620 mm wide shading roller blind in 195 cm length with all mounting accessories in black and a shadow value of 55 percent online for 129.00 euros plus shipping discovered. For perfectionists there are roller blinds and awnings in the form of motorized interior shades, which are automatically controlled by several temperature sensors and can be controlled even in the absence of the property integrated in modern SmartHome systems.