10 Tips on gardening in the greenhouse

The Content Of The Article:

The cultivation and cultivation of own vegetables is becoming more and more popular and many gardens now have greenhouses for pre-cultivation. However, gardening in the greenhouse differs somewhat from field cultivation. We've put together the top 10 tips to help you garden in the greenhouse.

1. Avoid overheating

Greenhouses convert solar energy into heat, which accelerates the growth of plants. But on sunny days, this effect can lead to heat buildup that damages the crops. Therefore, pay attention to a balanced climate. Practical are automatic window openers: they work with a special wax or oil that expands when heated and thereby lifts the windows. Many gardeners also hang a shading net over the greenhouse during the hot months, reducing sun exposure.

open a window

The greenhouse should be aired on sunny days to avoid heat build-up

2. Glass, foil, plastic: Which material is optimal?

Most greenhouses are now equipped with plastic double-skin sheets. The material is lightweight and insensitive, with significant differences in quality. The contained air chambers have an insulating effect. Simple houses are also covered with foil, but it has a lower durability. Blank glass (such as window glass) is used when the windows are supposed to be transparent, but burns on the leaves are threatened. In the case of caressed glass, in turn, the light is diffused and plant-friendly.

3. Start early in the garden season

The biggest advantage of a greenhouse is the extended season: until late in the fall you can still harvest in the sheltered climate, and in the late winter, the sun is already so strong that under glass, the temperatures for sowing sufficient. The robust early vegetables grow when the soil has warmed to about five degrees. In addition to lettuce, radishes and cress, you can now also sow the first annual summer flowers such as tagetes and begonia, which are later planted in the garden or balcony box.

Woman with young plants

The greenhouse provides seedlings with sufficient protection until they can be planted out

4. Does the greenhouse need a foundation?

A foundation not only provides stability but also insulates against cold. Depending on the size and design of the greenhouse, it will therefore be different. For small houses, it is sufficient to fix the frame with ground anchors in the ground. Somewhat more elaborate are point foundations, which are cast from concrete, and support the greenhouse at the corners (and usually additionally on the long sides). A strip foundation, which runs under the walls and completely encloses the house, provides a stable base and keeps out the winter cold in the winter. It is particularly important for glazed greenhouses because the glass makes the construction very difficult and subsidence in the foundation can cause the glass to tilt and then break.

5. Organic Plant Protection

Not only plants, but also some pests feel well in the greenhouse. Before you reach for lethal injection, you should inform yourself about the possibilities of biological pest control: Especially the targeted use of beneficial organisms is promising, since the industrious helpers - in contrast to the field - can not make do with it. For example, specialized providers provide ladybugs and larvae of the lacewing to fight aphids, parasitic wasps against the white fly, and predatory mites that fuss over the annoying spider mites.


The larva of the lacewing is a welcome garden helper

6. The optimal location

For the greenhouse, choose as sunny a spot as possible - even when the winter sun is low, it should not be in the shade. It is favorable if the roof ridge runs in east-west direction. Leaning greenhouses are ideally oriented to the south, possibly to the southeast or southwest. So that the paths are not too long - if, for example, a cucumber is quickly brought for the salad - you should not place the greenhouse in the far corner of the garden.


Several windows and a half-door provide passage: hot air flows upwards, through the side windows comes cooler. Rule of thumb: At least ten percent of the outer surface should be open

7. Automatic watering

Due to the high temperatures in the greenhouse, a good water supply for the plants is important. Much work takes off an automatic irrigation system. Well suited is the drip irrigation, in which the plants are supplied directly to the roots with water.The loss due to evaporation remains low. In addition, the leaves remain dry, which significantly reduces the risk of fungal diseases, for example with tomatoes.

water hose

An automatic droplet irrigation system ensures that the plants are supplied with exactly the right amount of water

8. How to gain additional space

As a reasonable minimum size for greenhouses are often called ten square meters, but not everywhere enough space for it. If it gets too tight for you, use the space at height: with shelves, hanging systems and traffic lights, you can create additional acreage. But be careful not to shade the beds on the floor with the upper floors too much.

9. Avoid frost damage with simple means

Going in the late winter, the temperatures at night once again properly in the basement, threaten in the unheated greenhouse damage to the young cultures. A so-called melt-fire, filled with wax burning for up to twelve hours, can heat small houses. Simple nubbed sheets on the panes serve as insulation and are translucent at the same time. Electric heating mats, which are placed under the sowing shells, can also keep the plantlets sufficiently warm.

10. Optimal use of space and cultivation time

The area in the greenhouse is limited. Therefore, it is worthwhile to plan the cultures well. A proven strategy is to use plants that are harvested in the spring, such as radishes, lettuce and cress. Then follow the more long-lived and heat-loving crops such as tomato, eggplant, paprika and melon. Under glass, these mature earlier and yield almost twice as high as in the field.

Cultivation plan spring

Cultivation plan spring

The plan is for a greenhouse measuring 2.5 by 3.2 meters. Important in spring: choose kohlrabi, radish, radish and lettuce special early varieties and spinach only mildew-resistant varieties. Mini cucumbers are ideal for the summer. They are easy to care for, as there is no need to delicate and guide the shoots. Important for all summer vegetables are a good water supply and regular fertilization. The easiest to administer is a vegetable liquid fertilizer, which you should dose low but should give regularly.

Cultivation plan summer

Cultivation plan summer

Video Board: Discover Greenhouse Tips - Gardening, Building Ideas to Heating calculation - 10 Videos Compilation.

© 2019 EN.Garden-Landscape.com. All Rights Reserved. When Copying Materials - The Reverse Link Is Required | Site Map