Dutch technology for a year-round strawberry harvest
Have you ever wondered where fresh strawberries come from in supermarkets in cold weather? How is it grown? In most cases, this is the so-called "Dutch strawberry", the seedlings of which are planted year-round according to a certain technology, which is distinguished by a special method of irrigation, fertilization and planting.
Where to get seedlings in winter?
Do you want to learn how strawberries are grown in Holland, and at the same time try this unique technology on personal experience in order to get ripe tasty berries by winter? To do this, you will need seedlings, plastic bags, a special substrate and a great desire to bring the work started to the end, regardless of possible mistakes. The cultivation technology is similar to the cultivation of strawberries in bags, but there are still some differences.
Since it is impossible to plant seedlings in open ground from autumn to spring, the Dutch method of growing strawberries is used mainly in greenhouses. At home - on the windowsill or on the balcony, you can also achieve a good harvest of sweet berries if you create an optimal microclimate and strictly follow a proven methodology.
Growing strawberries in Holland
The Dutch method of growing strawberries is based on the fact that the seedlings are planted constantly, every month or two. Then the crops can be harvested almost continuously. But where to get seedlings in the cold season? Agrofirms all year round at high prices offer special strawberry seedlings "frigo", which you can prepare yourself from your own plot. After all, frigo seedlings are nothing more than well-developed strawberry bushes, dug up in the fall and chilled (hence the name). All winter they can be stored at low temperatures in a refrigerator, freezer or in a cool basement, and at the right time they can be taken out and dropped off.
In nature, strawberries are "canned" naturally, under the snow. Your task is to artificially create conditions for "deep hibernation" so that you can "wake up" the seedlings at any time. This is the main secret of the year-round cultivation of strawberries using Dutch technology.
Choose high-yielding varieties for seedlings that are self-pollinated if possible. Dutch strawberry varieties, Tristar, Maria, Selva, Elsanta, Tribute, Sonata, Polka, Mrak, Marmolada, Darselect are suitable. Having planted strawberries of the listed varieties on the site (planting strawberries with seeds is possible), in the first year, cut off all peduncles and mustaches from the mother plants. Next year, each bush will have about 20 mustaches, which will need to be rooted - from them, by autumn, strong young rosettes will turn out. Dig out the sockets when they are in a dormant period (from the second decade of October), at a temperature of -2 degrees. Remove all large leaves and vegetative shoots from the bushes, rinse the roots and cut them in no case! Your seedlings are now ready for long-term storage.
Video about growing strawberries in Holland
Optimal conditions for capricious strawberries
In order for strawberries using Dutch technology to develop well and delight you with a bountiful harvest, you need to prepare a suitable soil. It is better to take for this purpose a substrate consisting of natural soil and synthetic elements to provide the seedling bushes with all the necessary substances. Sandy soil with rotted manure will not work - various diseases quickly accumulate in it and pests appear. The soil must be sterile, free from weeds and microbes. Most often, the substrate is mixed from steamed peat (it has a high absorption capacity and good porosity) and perlite, which improves the aeration of the peat. Even coconut fiber or mineral wool is used as a substrate.
Sandy soil with rotted manure will not work - various diseases quickly accumulate in it and pests appear
You can plant seedlings in boxes, but the best conditions for growth will be provided by plastic bags:
- take narrow plastic bags with a diameter of 15 cm;
- cut holes in them for strawberry bushes in a checkerboard pattern every 25 cm, or in two strips with a distance of 40 cm (with strong thickening, the berries will turn out to be small);
- fill the bags with substrate;
- Plant the seedling bushes in the cut holes at a 45-degree angle.
Narrow bags are convenient because they can be placed on a balcony or in a greenhouse in several tiers, getting more berries.
Now you need to take care of watering. Since strawberries need regular watering, but at the same time water should not get on flowering and fruiting plants, it is recommended to build a system of pipes through which water and fertilizers will flow to the roots of the seedlings. Creating such a system will take effort, but then it will be much easier to care for the strawberries. “Minitubing” can be made from dropper tubes drawn from a two-liter water bottle to each bush. The water in the bottle must be constantly topped up as it goes down.
Video about growing strawberries
Secrets of a successful result:
- to ensure an 8-hour daylight hours, it is necessary to organize supplementary lighting of strawberry seedlings using fluorescent fluorescent lamps;
- the room temperature in the room must be constantly maintained at the same level, therefore, provide for the possibility of additional heating in advance if necessary;
- plants also need fresh air - regularly ventilate the room with strawberry seedlings;
- if you have planted non-self-pollinated varieties, you will have to manually pollinate the plants during the flowering period, brushing over the flowers with a small brush;
- Plant seedlings in batches so that the entire crop does not fall at the same time.
Plants also need fresh air - regularly ventilate the room with strawberry seedlings
The Dutch technology of year-round cultivation of strawberries does not require special knowledge and skills. All that is required of you is to devote a little time to the plants every day and to maintain optimal conditions for their growth.
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Dutch strawberry cultivation technology
The Dutch proposed an interesting current method of growing strawberry bushes for harvesting a year-round berry harvest. Every year it is gaining momentum due to its effectiveness and relative simplicity. Anyone can try the Dutch way of growing strawberries in action, even on the windowsill in the apartment.
Features of Dutch technology
The Dutch technology can be called German because of the pedantic approach to the microclimate in which strawberry cultivation will take place. There can be no trifles here, all the constituent elements are important: good-quality planting material, and caring for it, and maintaining the temperature, and the choice of lighting, and fertilizing with mineral fertilizers.
In particular, the berry culture is grown in the greenhouse throughout the year, the lighting must be present for at least 12 hours, and it is also necessary to ensure high humidity and constant renewal of the planting material.
It is the last factor that will allow you to achieve continuous fruiting. New bushes are necessarily planted every 1.5-2 months, and the fruit-bearing bushes are mercilessly removed. Therefore, you will constantly need a new type of seedling, for example, such as frigo... In late autumn, the bushes are dug up and placed in refrigerators, in which they are kept at constant negative temperatures. "Frozen" frigo bushes are rudimentary leaves and roots. Actually, Dutch technology predominantly uses just such seedlings. Frigo has a shelf life of 9 months, and the harvest can be obtained in a maximum of 2 months.
If the frigo option does not suit you, you can pay attention to remontant strawberry varieties... They need to be changed much less frequently (once every two years), but the harvest will be regular.
And the last thing that characterizes the cultivation of strawberries according to the Dutch technology is the use of various containers, from plastic bags to pots and containers. Also, only drip irrigation is assumed for irrigation.
Features of the choice of varieties
The first and important step in cultivating strawberries is choosing the right variety. When choosing, take into account the following criteria:
- Ability to bear fruit abundantly with a thickened planting. Most typical for early varieties
- Constant year-round formation of the ovary, thanks to which it will be possible to collect up to 5 crops per year. This property is characteristic of remontant strawberry varieties.
- Independent of lighting duration. Late ripening varieties bear fruit only with a short daylight hours, medium ripening - only with a long day. Therefore, the best choice would be plants with neutral daylight hours, which produce fruits with a fixed duration of lighting.
- Strong immunity to profile diseases of strawberries: black, white and root rot, fusarium
- Productivity from 300 to 500 centners per hectare. Allows you to recoup the money spent on building a greenhouse
- High density of berries, low water content. Otherwise, the fruits will be poorly stored.
For cultivation for sale, the presentation of strawberries also plays an important role. Consumers prefer medium to large berries (not gigantic or small).
The most popular greenhouse varieties that meet most of the criteria described are:
Growing strawberries using Dutch technology
One of the most favorite treats for people of all ages is, of course, strawberries. According to archaeological excavations, this berry has been known since the Neolithic times, and grew in European forests.
Origin and methods of its cultivation
We can conclude that people fell in love with her since the beginning of the era of antiquity. In confirmation of this fact, written sources of the Egyptians and Greeks can be cited. Very quickly and confidently, strawberries began to gain popularity throughout Europe.
If you also love this berry so much, what prevents you from growing it yourself? This does not require any special skills and a lot of time if you follow the Dutch technology. A few basic secrets will help you with this.
You can be sure that it is possible to harvest more than 8 kg from one similar package. All berries for a feast for the eyes will be large, tasty and juicy. And this is after planting only about 25 bushes.
What is a plastic bag? This is an ordinary narrow bag with a diameter of about 15 cm. The size is small and this is what allows such bags to be placed in several tiers. Thanks to this, it is possible to grow such strawberries using Dutch technology even in the smallest premises, such as basements and garages.
Details of the Dutch cultivation method
Growing strawberries indoors is about the biological characteristics of the plant. Like any other plant, a bush of such a berry lies in hibernation for the winter. So our task is to "wake up", as it were, and for this it is worth making the necessary efforts to create the right conditions conducive to its growth, reproduction and fruiting.
The technology, invented by the Dutch, makes it possible to grow strawberries also indoors. To do this, you can use the balcony and then fresh and tasty berries will be present on your table. In case you want to grow such an exotic fruit for sale, then you can think about a small greenhouse.
Of course, they will take up a little more space, but the result is worth it. As for the bags, you don't have to buy them. You can sew these special bags yourself.
To do this, you need to make small holes into which the seedlings will be planted directly. It all depends on the size of the bag itself, but usually up to about 20 bushes are planted.
To promote a fertile growing process, a special nutrient solution must be regularly fed into each bag, which is introduced through special droppers in the form of tubes.
Fast growing tricks
By supporting the plants according to a certain scheme, after a short time, flowers will appear on each plant, and after the berries. Strawberry varieties must be self-pollinating, otherwise you will only get flowers, not berries. Having collected the first rich harvest, in two months you can expect the next one, which, unlike the previous one, is always much smaller.
It is worth remembering another important trick. To grow strawberries according to the Dutch scheme, choose a special sterile soil that is free of any weeds. In no case should you add ordinary land from the garden. Peat or sand should be steamed to exclude the presence of microbes.
The room temperature should be regularly maintained within room temperature. Fluorescent bulbs can also be used to provide adequate lighting. In a small room, two ordinary bulbs will suffice. Such lamps must be turned on until 12 hours a day, and the rest of the time they must be turned off. In this way, you ensure the alternation of day and night.
With regards to watering, strawberries require moisture every day, and drying out of the soil in no case should be allowed. About once a week, the plant needs to be abundantly fed with mineral fertilizer. Do not use organic fertilizers.
By applying all of the above recommendations, you will be able to grow a rich harvest not only for your family, but also for sale. And given the prices for this berry, especially in winter, this idea will help you get a good home business.
How to grow strawberries: using Dutch technology, outdoors
Probably, there is no such garden plot on which strawberries would not grow. Only now it is not always possible to grow a quality product. In most cases, summer residents do not know how to grow strawberries so that they are not only beautiful, but also tasty.
The content of the article:
Growing strawberries at home is a painstaking task. It is difficult to look after her, because the growing mustache does not allow to normally loosen the ground and remove the weeds. Without processing, strawberries grow and thicken, the berries become small and sour, and over time, the bushes cease to bear fruit at all.
Let's see how to grow strawberries, and what are the planting methods and methods for caring for strawberries. Knowing the technique, even a novice gardener will be able to raise a tasty and sweet berry, which will especially delight his loved ones.
Strawberry cultivation methods
- • Dutch technology
- • Open ground
- • Method of vertical landing in a pipe
- • Vertical fit in bags
- • Balcony way
- • Greenhouse method.
There are many ways to grow strawberries, and each of them may appeal to you. But whichever one you choose, the strawberries just won't grow, they need constant care. Let's take a look at how to grow strawberries in each of the following ways.
Dutch way of growing strawberries
Growing strawberries using Dutch technology means getting a harvest all year round. This is especially true for the winter period, when this plant cannot grow in the garden, and its prices are sky-high. The first thing to start with is buying seedlings. You can buy them in a specialized store or grow them yourself.The cultivation process is long, but worth it.
Prepare a site on the site and plant the purchased Dutch "Frio" saplings there. These can be varieties: Tristar, Maria, Elsanta, Sonata, Polka, Mrak, etc. After the plants begin to throw out their whiskers and bloom, all this must be removed. In the first year, your work is finished. The next summer, each of the bushes will release many pagons, which will serve as seedlings in the future. They will need to be rooted, wait until mid-October and then dug out.
Growing strawberries using Dutch technology requires planting special strawberry seedlings, and they should be grown according to all the rules. Once the plants have been dug up, they should be stored in a cool room or refrigerator until planting. But before you put the seedlings for storage, it should be cleaned of large leaves and vegetative processes. Treat the roots with tenderness, they should not be injured.
We prepare soil for growing strawberries using Dutch technology. To do this, you should take the same amount of soil and mineral soil. The latter can consist of peat, humus, mineral wool, coconut fibers. When growing strawberries at home, you can fill bags or boxes with this soil. For an industrial scale, the soil is loaded into greenhouses or special rooms.
How to grow strawberries in a greenhouse using Dutch technology, as well as outdoors. The main thing here is to constantly replant new plants, and remove those that have outlived their life. Do not forget about watering, without water the plants will disappear. Lighting must also comply with all standards.
Vertical cultivation of strawberries
There can be several ways to grow strawberries vertically, let's look at the most convenient and popular ones.
- • Growing strawberries in pipes that are installed indoors or outdoors in an upright position. In drainpipes of large diameter, holes are made at a distance of 25 cm from each other over the entire area of the pipe. Prepared soil is poured into the middle, and strawberries are sown into the holes at an angle of 45 degrees
- • A large diameter downpipe is cut in half to create two semicircular containers that can be used for planting strawberries. These strips of pipes are twisted together in such a way as to form a ladder, and are suspended from the wall.
- • Vertical bagging of strawberries means filling the bag with soil and hanging it upright. At a distance of 20 cm, holes are made on four sides of such a size that you can plant strawberries at an angle of 45 degrees
- • How to grow strawberries on the balcony can take a long time. A great option for this would be a set of pots of 5 - 7 pcs. different diameters. A large pot is installed at the very bottom and filled with an earth mixture. A smaller pot is placed on it and is also covered with soil. This maneuver is done with other pots as well. The result is a pyramid with strawberry seedlings on the sides.
- • For vertical cultivation of strawberries, a construction net rolled up in a circle and installed in a wooden round pallet is also suitable. From the middle, the mesh is wrapped in a cloth and covered with prepared soil. Plants are planted over the entire area of the net at a certain distance into holes pre-cut in the fabric.
Growing strawberries outdoors
The easiest and most popular way is to grow strawberries outdoors. But here, too, there are a few secrets to be known. The area for strawberries should be allocated in a well-sunlit area. You should not plant seedlings between trees, nothing good will come of it. If you plant the plants in the spring, then the most resistant of them can yield a crop already in the flow year. But the main berry picking should be expected only next year.
Having set a goal and posed the question of how to grow strawberries correctly, you should not expect that everything will be resolved by itself. After fruiting, do not be too lazy to work through the strawberry bed. Remove all weeds and excess tendrils, loosen the soil between the bushes. For the winter, plants should be covered with leaves or straw so that the rhizome does not freeze. Growing strawberries outdoors is a painstaking process. In the spring, a strawberry bed should also be prepared, and after that, sand the ground so that the berries are not dirty after the rain and do not rot. Only by observing all the rules and caring for strawberries can you hope to get a high yield.
Growing planting material
You can prepare planting material for greenhouse cultivation of strawberries in different ways:
- Young plants are grown on the mother plantation until late autumn, and with the arrival of frost, the rooted whiskers are carefully dug out, cut off the foliage and stored with an open root system in cellars or basements at temperatures from 0 to +2 ºС. The day before planting in the greenhouse, the seedlings are removed from the storage for acclimatization and sorted. The advantage of this technology for growing strawberries is the root system developed in the seedlings, and the disadvantage is the need for large brood plantings, which also need to be updated in two years.
- Seedlings obtained by the cassette method are sent for storage at temperatures from 0 to +1 ºС and humidity of 95% in the form of young whiskers. Six weeks before being transplanted into the greenhouse, they are removed and planted in small containers of nutrient soil. The containers are shaded for 4 weeks while there is intensive root formation. The plants are exposed to light in the fifth week, and in the sixth - they are planted in the greenhouse.
Planting strawberries in a greenhouse
Dutch technology for uninterrupted growing of fresh berries involves the use of a variety of containers for planting plants. These include cut-out polypropylene pipes, pots and plastic bags and containers.
The main thing is that the containers placed vertically or in several tiers have a volume sufficient for the root system, and the plants receive the required watering and lighting.
One of the practical solutions is a plastic bag, up to 2 meters high, so that picking berries is simple and convenient, and with a diameter of at least 15 cm.After 25 cm, cruciform slots are made on the surface of the bag with the substrate in a checkerboard pattern, where the seedlings are planted.
When planting in boxes or containers, it is important that the plantation is not thickened and well ventilated. This will prevent a putrid infection from developing and will have a positive effect on the quality of the berry.
The technology of growing strawberries all year round is good when using self-pollinating varieties of berries, otherwise the summer resident will have to pollinate with a brush, a fan, or, if space permits, put a hive in the greenhouse.
Despite the apparent hassle of such berry cultivation, the costs quickly pay off, because even in the cold season, up to 50 kg of fresh strawberries can be harvested from a square meter of the greenhouse.