How to prepare a herbal infusion to effectively protect plants from diseases and pests

It is possible to protect the garden from harmful insects, as well as fungal and bacterial diseases without the use of special chemicals. It is enough to take herbs that are always at hand: they are cheap, affordable and environmentally friendly. Herbal infusions not only destroy pests, but also have a preventive effect.

Nettle infusion

It is a mild product that not only effectively fights pests, but also acts as a nitrogen-carbon fertilizer. The high percentage of iron in nettle leaves has a positive effect on plant growth and development.

Nettle infusion is an excellent remedy for fighting late blight. It is best to use it during the autumn processing of the garden before the cold weather, but at other times it is no less effective.

For cooking, you will need to take 1 kilogram of fresh nettle leaves and 10 liters of clean water. The water should be cold.

The leaves will need to be thoroughly chopped, filled with water and insisted for about 12 hours. Then strain and use for spraying.

For a more effective fight against neglected late blight, you can prepare a decoction: for it they take half as much water as in the previous recipe, and bring fresh leaves to a boil. The product is ready for use immediately after cooling.

Infusion of horsetail

Due to the content of silicic acid, horsetail is considered one of the most effective means for strengthening plant tissues; it helps horticultural crops grow faster and increases their resistance to changing environmental conditions.

When using horsetail, you don't even need to use phosphorus mineral fertilizers: this amazing plant allows you to absorb phosphorus from the soil much more actively. Horsetail infusion fights well against pests and fungal diseases, and also helps against various types of rust.

The proportions for the preparation of the infusion: 10 liters of water per 1 kg of chopped horsetail. Green shoots must be chopped, filled with water, allowed to brew for 10-12 hours and brought to a boil. After cooling down, strain well and leave for a few more hours.

Before using the product for spraying and watering, it must be diluted with water in a ratio of 1 to 5.

Fern infusion

Those who decide to abandon the use of toxic chemicals at their summer cottage are advised to pay attention to fern leaves. They are well suited for killing aphids, snails and slugs. Fern infusions are best used for fruit trees. You will need a garden bracken fern, which is most common in home gardens.

For a 10-liter bucket of water, take a kilogram of chopped fresh fern leaves. They are left to roam for several days. As soon as the fermentation processes come to an end (you will notice the cessation of foam production and a slight darkening of the liquid), the product is ready to use. In its pure form, the infusion is not used, it will definitely need to be diluted in a ratio of 1 to 10. The crowns and trunks of aphids are sprayed with fern leaves, and root watering is also carried out.

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Features of the preparation of herbal infusions and decoctions

In order for an infusion or decoction of medicinal herbs to really have a healing effect, it must be prepared in compliance with certain rules.

Raw materials containing tannins

oak bark, cinquefoil rhizomes, serpentine rhizomes, burnet rhizomes and roots, badan rhizomes

  • the broth is filtered hot, without insisting at room temperature, since tannins dissolve in hot water and precipitate when cooled
  • it is impossible to insist in metal dishes - tannates of heavy metals are formed.

Raw materials containing anthraglycosides (substances used as laxatives)

rhubarb root, buckthorn bark, senna leaves

  • make decoctions - this is the only way to extract anthraglycosides
  • filtered hot without refrigeration
  • the decoction of senna leaves is completely cooled before straining, because it contains resins that irritate the gastric mucosa.

Raw materials containing essential oils

valerian rhizomes and roots, mint leaves, sage leaves, chamomile flowers, thyme leaves

  • infusions are prepared in a tightly sealed container so that essential oils do not evaporate
  • when insisting, the raw material does not need to be mixed
  • the infusion is filtered when it has completely cooled down

Raw materials containing saponins (substances with expectorant, anti-inflammatory properties)

liquorice root

  • only make a decoction
  • add soda at the rate of 1 g per 10 g of raw material for the necessary alkaline reaction

Raw materials containing mucus and starch

marshmallow roots

  • prepared by cold infusion at room temperature
  • infusion time - 30 minutes with constant stirring
  • after infusion, the raw material is filtered without squeezing, otherwise starch and plant cells can get into the infusion

Raw materials containing mucus and fatty oil

flax seeds

  • prepare gruel in a ratio of 1:30 (1 g of flax seeds per 30 ml of water)
  • you can not use crushed seeds, in them fatty oils go rancid and give the gruel an unpleasant taste and smell
  • the gruel is obtained by shaking the seeds in hot water for 15 minutes, after which it is filtered through two layers of gauze.

Prepared infusions and decoctions should be refrigerated and consumed within two days.

The use of onion peel for a vegetable garden or garden and use as fertilizer

Compositions based on raw materials have a positive effect on plants at all stages of maturation.

Onion peelings contain the following beneficial substances:

1. Rutin and quracetin increase the amount of carbohydrates in fruits, thereby making fruits and vegetables sweet and tasty. Peppers, tomatoes and cucumbers acquire a unique taste and are saturated with vitamins. The large amount of dry matter in the fruit makes it less watery.

2. Carotenoids are contained to a lesser extent than in carrots and pumpkin, they are able to protect against fungal diseases, increase the protective properties of plants. Stimulates the production of immunity, saturates plants with antioxidants.

3. Phytoncides suppress the number of pathogenic microflora. The husk has a specific smell that many dangerous pests, such as spider mites and aphids, cannot tolerate.

When in contact with phosphoric acid, metabolism accelerates, thereby the root system gets stronger and grows faster. It is saturated with useful microelements, becomes resistant to parasites, which leads to an increase in the number of fruits.

4. Vitamins PP or nicotinic acid accelerates the maturation of the root system, even on difficult soils. Together with vitamin B1, it helps cultivated plants to better absorb nitrogen and phosphorus from the soil, thereby accelerating the production of chlorophyll in the leaves.

5. Vitamin C or ascorbic acid increases the growth rate, making plants less susceptible to lower temperatures.

Herbal infusion recipes

Before moving on to describing the recipes, let's look at what they use. The main ingredients of nutritional teas are herbs, bacteria and nutrition.

Herb for infusions

As a grass base, you can use both waste from cultivated plants and numerous weeds from the site. Especially good infusions are obtained from nettle (read about the benefits of nettle), which, as you know, will not grow on bad soil. You can also use:

  • burdock
  • wood lice
  • deaf nettle
  • dandelion
  • mowed lawn grass
  • and other weeds.

Attention! Do not use inseminated dead plants, many seeds tolerate fermentation and then germinate well.

In addition to the grass itself, food for developing bacteria can serve as manure, chicken droppings and sugar in any form. Fermented jam is best suited for these purposes.

Bacteria in herbal infusion

When it comes to how to cook bacteria, there are several ways to go or put them together. Let's talk about a few examples of how to get bacterial preparations with your own hands.

  1. A very popular herbal infusion for feeding plants with yeast. To make it, you need to dilute a bag of dry yeast and a tablespoon of sugar in a liter of water. After two days of aging in a warm place, add the prepared yeast bacteria to the infusion.
  2. Lactic acid bacteria can be enriched with "herbal tea" even easier. It is enough to let natural milk or sour cream turn sour - and the sourdough is ready.
  3. Hay bacterium is very useful. It can be obtained by adding a clump of old stale hay to the infusion. How to make an effective hay stick infusion? To do this, you need to boil the old hay for more than half an hour and cool it at room temperature.
  4. By adding garden soil to the solution, we introduce the natural bacteria of our site.
  5. Purchased bacteria from natural farming centers, such as Shining or Baikal, are purchased from specialized stores or websites.
  6. By filling the grass with water from the village pond, you enrich the solution with water bacteria. Well water loses a lot in this sense.
  7. Nitrogen-fixing and phosphorus-potassium mobilizing bacteria are also commercially available. They will also help enrich your composition.

Attention! There are never too many bacteria, so all their types can be used together, in a complex manner in one solution!


© Author: Elena GORBUNOVA, Ph.D. biol. Sciences, Moscow


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A lot of celandine grows along the edge of the garden. How can you use it to help vegetables fight disease and pests?

Celandine is often used to combat late blight and rust. Pour 1 kg of chopped celandine tops with a bucket of hot water. Insist a day, strain, spray the affected plants in the evening. Repeat the treatments every 7-8 days.

From slugs, 2 kg of chopped celandine herb, insist in 10 liters of water for two days, strain, abundantly spray the soil around the plants.
To combat onion flies and various types of aphids, grind the dry grass of celandine into powder and dust the plants with it.
There is an opinion that celandine can rid the garden of the bear. To do this, put chopped fresh sprigs of celandine in the pest's moves. Important! Remember that celandine is poisonous, so be sure to wear rubber gloves when working with it.

Fresh, dried grass is suitable for their preparation, you can also take a pharmacy one.
I spray the flowers with broths several times.

Decoction of thyme: 1 kg of fresh leaves, pour 10 liters of water, boil for 30 minutes, strain and use against mealybugs, scale insects, aphids.
From tansy: 500 g of leaves, pour 10 liters of water. Insist for a day, then boil for 1-2 hours. Strain it, use it cold against the flower beetle, raspberry beetle and sawflies.
From horsetail: pour 1 kg of leaves with 10 liters of boiling water, boil for up to 1 hour. Strain, dilute with water 1: 5 and spray to prevent fungal diseases.
Onion-garlic infusion: pour 500 g of chopped raw materials with water (1: 1). Close the container tightly and put it in a warm, dark place for 7 days. Before processing, dilute 50 gil of infusion in 10 liters of water, add 2-5 tbsp. liquid soap. The solution is effective against pests and fungal diseases.

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