Tomato cultivation in the greenhouse - skillfully cultivate tomatoes


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Tomatoes - Solanum lycopersicum

There are all sorts of helpful and useful accessories that can make your work in the greenhouse much easier. Mentioned here, for example
  • Greenhouse tables and shelves
  • automatic window opener (for automatic ventilation)
  • Shading mats and nets for sunny summer days
  • insulating bubble wrap for cold winters
  • greenhouse-compatible fans
  • special plant and propagation lamps
  • Solar heat storage
  • Six's thermometer
  • Heaters approved for greenhouses (eg circulating air and propane gas heaters, fan heaters)
Which accessory is actually useful for you and which rather senseless depends primarily on yourself - and how much you want to use the greenhouse. If it's just a question of cultivating a few tomato plants in a small film tunnel, you can save on many of the above tools.

A greenhouse for the balcony

By the way, greenhouses can not only be in the garden, balcony owners can also install one. Many commercially available greenhouses are available commercially, sometimes referred to as "tomato greenhouses". Such a balcony greenhouse does not have to be very wide, only at least two meters high. This is especially true if you want to draw tomato tomatoes. These grow less in width, but instead in the air. In contrast, bush and game tomatoes require less space in height than in width - they can be quite bulky sometimes. Who owns a loggia (ergo a balcony with glazing) instead of a normal balcony, can be lucky. The glazing replaces the greenhouse and gives the tomatoes ideal growing conditions.

Which cover is better, glass or plastic?

Traditionally, glass panels are used for the translucent cladding of cold frames and greenhouses. However, these have serious disadvantages: glass can break, and it also offers only low thermal insulation. Effective insulating glass, on the other hand, is very heavy and quite expensive. Therefore, the double or double wall panels made of polycarbonate or acrylic have been on the rise for quite some time. Already from a thickness of four to five millimeters, they have an insulating effect due to the air trapped in them. A very effective thermal insulation offer plates from 16 millimeters in thickness. Good double skin panels for outdoors are also UV-resistant, weather and hail resistant. Part of the manufacturers also advertise with special coatings that are to prevent the formation of condensation or the tarnishing of the discs.

How To Build Yourself A Simple Tomato Greenhouse

If you are a bit handicrafted, you can build yourself a simple tomato greenhouse.
For this you need the following materials:
  • different squared timbers
  • 3 pieces with the dimensions 230x10x10 cm
  • 3 pieces with the dimensions 210x10x10 cm
  • 2 pieces with the dimensions 200x10x10 cm
  • 6 battens with the dimensions 100x10x5 cm
  • 2 wooden slats with the dimensions 90x2x2 cm
  • Wood stain for impregnation
  • Greenhouse film
And so the greenhouse is being built:
First of all, impregnate all wooden components to make them more weather-resistant. Measure now on the selected garden area the rectangular floor plan with the dimensions 200 x 80 centimeters. At the corners as well as in the middle of the two long sides you dig holes 50 centimeters deep, in which you anchor the six longer squared timbers firmly. Therefore, the wood should be one row lower so that the roof later falls slightly oblique. This allows the rain to drain better and does not accumulate on the greenhouse roof. Now screw the 200 cm long square timbers and the roof battens vertically so that a stable framework is created. Finally, attach the appropriately sized greenhouse foil with the help of staple needles. The tighter the film sits, the more durable the whole greenhouse.
Tip: The one narrow side of the self-built foil greenhouse is not closed. Instead, let the film fall loose here and fasten with the help of laces and straps or roll them up as needed, like a window blind.

Suitable tomato varieties for cultivation in the greenhouse

Tomatoes - Solanum lycopersicum

Now that the greenhouse has stopped and the tomatoes have been successfully brought into the house, you can start the preparatory work from about mid to late March. In order for the plants to grow well and provide abundant fruit, the substrate must be rich in nutrients, loose and well-drained - tomatoes are both deep-rooted and heavy-grained, benefiting most from a humus-loamy soil. If this is not the case with you, then lift the tomato beds in the greenhouse about 50 centimeters deep and fill in instead good mother earth with plenty of added compost.If your garden soil meets the high demands of the tomatoes, you only have to dig them up well and also add plenty of compost. Also add horn shavings, potash magnesia and, if necessary, rock powder. Then crumble the thicker lumps of earth and level the beds well. The soil should now be well loosened in the depth, so that the plants can easily grow and root.

So plant tomatoes in the greenhouse

A few days before planting, it makes sense to overflow the soil with self-applied field horsetail broth, in order to counteract possible fungal infections in advance. Incidentally, the same effect has a handful of crushed nettle leaves that you put into each planting hole. Homegrown tomatoes are ready to grow when they are about 20 to 25 centimeters high and ideally already have a few flowers. If the greenhouse is frost-free, you can put the plants in the middle of April, otherwise one month later. Also note these hints:
  • Planting hole should be twice as large as the root ball
  • Minimum distance of 60 centimeters between the plants
  • Bush tomatoes need more space
  • Immediately lower the clay pots with holes in the ground next to the plants
  • these are needed for casting
  • Press tomatoes and pour well
As a trellis aid, you can install a string system: Stretch vertically over the tomato beds thick strings of natural materials, from each of which you let one more tomato plant down each run vertically down and anchored for example with a hook in the ground. On such a string, tomato tomatoes can now tend to rise up.

Good neighbors - bad neighbors: Which vegetables harmonize with tomatoes

Cucumbers and tomatoes have very different demands on the soil conditions, the care and especially on the prevailing climate in the greenhouse. That's why this station wagon does not go so well in small greenhouses, unless you can divide the greenhouse into two climates and cultivate cucumbers and tomatoes strictly separated from each other. On the other hand, these types of vegetables are very good with tomatoes:
  • Beans (eg snake beans)
  • garlic
  • lettuce
  • paprika
  • eggplant
  • Physalis / Andean berry
The optimal care for greenhouse tomatoes
If the plants are finally successfully placed in the garden house, they require careful care - only then they grow lush, stay healthy and put many fruits on.

to water

Tomatoes - Solanum lycopersicum

Especially in the ripening period, tomatoes need a uniformly moist (but not wet!) Soil, so that the fruits are not dropped prematurely or burst open. Do not use cold tap water (too much lime), but preferably warmed rainwater for watering. Pour into the buried clay pot and avoid wetting the leaves.

Fertilize

Tomatoes are starvationers who need to be provided with compost not only when planting. If the plants have grown well, you should provide them every two to three weeks with a high-calorie tomato fertilizer, preferably on an organic or organic-mineral basis. Instead, you can also regularly plant the plants with self-prepared broth from nettles and comfrey.

Casting and cutting

With stem tomatoes, you should regularly break out the side shoots that are created in the leaf axils. This is also referred to as stinging and is necessary for the plant to put its energy into the development of flowers and fruits - and less so into broad growth. In addition, cut off the top of the main shoot in midsummer after the development of five or six inflorescences, so that the already grown fruits can ripen well.

Diseases

The most common problem with tomatoes is the cabbage and brown rot, which may occur around the end of June. The fruits form brown, wrinkled spots, entire stems turn black-brown and the leaves are first gray-green, then spotted brown. In the case of heavy infestation, the plant dies within a short time. The disease is caused by an excess of moisture, which is why tomatoes should not be rained. In greenhouse and foil houses, good ventilation is very important for the same reason, so that the humid air can escape to the outside.
Tip: Tomatoes should also change the bed each year in the greenhouse and, above all, they should not be grown either next to or after potatoes.

harvest

Depending on the variety, the first tomatoes are ready for use from July onwards and can then be harvested fresh until October when the weather is mild. If the last fruits are still to be harvested green, they can ripen in the house in a dark and warm place. Since ripe tomatoes quickly lose their aroma in the refrigerator, it is better to store them in a cool room.
Conclusion
Tomatoes are not quite as warm as some of their relatives, but still thrive in sheltered places or in a greenhouse best.This is partly because the sensitive plants are protected against moisture here, but also in the more even and above all warmer climate. Tomatoes should never be watered as this can cause the dreaded cabbage and brown rot. For the same reason, the greenhouse must be ventilated regularly to allow the humid air to escape outside.

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