Onion hulls for the garden and vegetable garden: use as fertilizer and pest control

Onions are a useful and irreplaceable vegetable plant, which is used with great success not only in cooking and folk medicine, but also acts as a valuable supplement. Onion peel decoction is a deadly remedy for many pests that bring many problems to garden and indoor crops. At the same time, it is an excellent fertilizer for plants, which helps to increase yields.

Useful properties of onion peels

Biologically active and mineral substances contained in onion husks have nourishing, tonic and disinfecting properties. This is especially true for red onions. Numerous vitamins, mineral salts, carotene, phytoncides, quercitin - these components have a beneficial effect on many green crops and on the composition of the soil. With the help of a fresh broth, you can cure the root system of plants from many diseases, accelerate root formation, restore diseased parts and strengthen immunity. Onion peel as a fertilizer will help improve the composition and structure of the soil, as well as scare off a large number of harmful insects and other garden and horticultural pests.

A vegetable garden or a land plot in the country every year is sown and planted with various vegetables and berry crops, the land does not have time to rest. This is where onion broth comes to the rescue, which will become a real nutritional supplement for garden plants and good support for the soil. Sweet peppers, tomatoes, potatoes, zucchini, wild strawberries and strawberries, flowering crops will receive additional strength from decoctions and infusions of onion peels.

This "magic" onion liquid can be used as a "revitalizing" agent for ornamental garden and indoor plants that have begun to fade or yellowness has begun to appear on the leaves. Many green crops, after being applied to the soil or treated with decoction of onion husks, will become strong, healthy and blooming again. Ordinary onion waste, which most people perceive as everyday household waste, can be invaluable in horticulture and floriculture. Using only fresh broth (this is a prerequisite!) You can save a dying plant.

The use of a decoction of onion peel in the country and in the garden

Every summer resident and gardener has repeatedly encountered problems when growing vegetables from seedlings and when fighting pests (outdoors and in greenhouses). Using a decoction of onion peel in your garden plot, these problems can be solved. You just need to choose the right method. Spraying can be used not only for "medicinal" purposes, but also as a prophylaxis, especially in a greenhouse.

Seedling decoction

This method is used to protect young vegetable plants from pests and diseases, as well as to increase yields in the future. You can use dry onion husks and a decoction from it.

When planting seedlings, it is recommended to add the husk to the soil between the plants as a soil disinfectant and pest repellent. The broth is used for spraying vegetable plantations. It works effectively on cucumbers, squash, potatoes, carrots and tomatoes, stopping yellowing of the leaves and improving the general condition of plants.

It is very simple to prepare the broth. Dry the onion skins thoroughly. You will need 10 liters of water (1 large bucket) and about 4 glasses of husk. Onion waste is poured into water, mixed, heated to a boil, and then left to cool completely. The infusion will turn out to be very saturated, therefore it is recommended to dilute it with warm water (in a ratio of 1 to 5) before use.

Decoction from spider mites and thrips

The broth prepared according to this recipe is recommended to be used to combat fungal diseases (for example, with the "black leg"), as well as to destroy thrips and spider mites. You need to take 1 liter jar of husk and pour it with 2 liters of warm water, leaving it for 48 hours to infuse. Before use, filter the infusion, add water (the amount of infusion and water is the same) and a little liquid laundry soap.

Spraying should be done 2-3 times with an interval of 6-7 days.

Infusion from aphids

Aphids are a dangerous and widespread pest, the invasion of which can cause enormous damage to plants in a short time. Action must be taken quickly and decisively. For these purposes, a quick infusion is being prepared. Add 200 grams of onion husks to a ten-liter bucket of warm water and leave to infuse in a warm place for about 14-15 hours, after which the solution is ready for use.

The use of onion peels for indoor plants

Indoor crops also respond well to onion feeding and, within a short time after watering or spraying, transform and “come to life”. The broth provides indoor plants with vitamins, vital nutrients and prevents the appearance of diseases and pests. It has a positive effect on the decorativeness of flowers, on their growth and full development.

Onion husk fertilizer is recommended to be applied together with irrigation water or as spraying. Periodically, you need to spray not only the plant itself, but also the top layer of the substrate in the flower pot.

Making a decoction from onion waste does not take much time and effort. You need to take one large handful of husks and fill it with warm water in the amount of one and a half liters. The infusion is brought to a boil and remains on low heat for 5-10 minutes. As soon as the product has completely cooled down, you can use it as directed.

Onions are an indispensable product in daily nutrition, which leaves behind a valuable and healthy husk. This gift of nature, which many consider to be waste, does not require additional material costs and a lot of time to prepare the infusion. It is very easy to save onion skins, which every day after cooking, remains with any housewife. It must be thoroughly dried, and can be stored in a paper bag or cardboard box for a long time. You can't imagine an easier and almost free way to get rid of pests and diseases, as well as increase yields.

Onion peel Application in the garden and vegetable garden As fertilizer and pest control agent

Onion peels contain various mineral and biologically active substances. They nourish, tone plants, save them from many diseases and pests. A well-proven fertilizer is onion hulls for the vegetable garden or garden. Its use in this capacity is due to its anti-inflammatory, immunostimulating and regenerative properties. It is worth taking a closer look at some of the organic elements that make up the onion shell:

  • Carotene. The life-giving power of this substance has long been known. It is believed that the source of it is carrots, however, onion peels contain a lot of carotene. It is a powerful antioxidant for most plants. It helps to nurture seedlings, increases the resistance of garden and horticultural crops to various diseases. They are advised to process balcony flowers growing in conditions of high gas pollution. In addition, carotene is a natural immune stimulant that suppresses the formation of free radicals. It destroys all harmful microorganisms, including fungus and rot.
  • Phytoncides. It is a biologically active element of the onion, which is mainly concentrated in its surface scales. In any plant, phytoncides are part of the protective complex. But onion peels are especially rich in them. For a vegetable garden or garden, its use is largely due to the presence of this substance in large quantities. Phytoncides are effective against all harmful bacteria and fungi.
  • Vitamins of group B. Their high content explains the healing effect of onions. Vitamins of this group saturate the infusions made from the husk with useful properties. Experienced gardeners water young seedlings with them, as a result of which its growth accelerates, leaves and stems become stronger, and root rot is not terrible for such plants.
  • Nicotinic acid (PP vitamins). It is a necessary component for the complete processing of nitrogen and sulfur. The development of a plant at any stage largely depends on this process. Most oxidative reactions in living cells do not do without nicotinamide. The presence of this substance helps to improve root formation, which is especially important when growing crops on heavy soils.

Onion peel composition

Not only the onion itself, but also the onion husk has a number of useful substances that are beneficial for plants.

The peel contains:

  • Vitamins of the PP group. Promotes the growth of the root system, accelerates the processing of carbon dioxide.
  • Vitamins of group B. Provides protection against rot, accelerates the growth of young seedlings.
  • Carotene. Acts as a strong antioxidant. It has a positive effect on seedlings and provides green mass in case of insufficient light and oxygen.
  • Phytoncides. Increases resistance to fungus, mold and harmful bacteria.
  • Ascorbic acid. Increases resistance to disease.
  • A number of useful salts. They have a nourishing and revitalizing effect.
  • Quercetin. Promotes plant growth, enhances protective functions against diseases.

All of these and a number of other beneficial trace elements have a beneficial effect on plant growth and health.

The effect of onion peel on different plants is varied. So, for example, radishes and other root crops will be protected from bacteriosis thanks to decoctions and dressings from the husk. For tomatoes, a remedy based on onion peelings will bring protection against decay and high yields. And cucumbers will get rid of early yellowing and aphid attacks.

What plants are onion peels used for?

Due to its chemical composition, the husk serves as a valuable source of nutrients not only for the human body, but also for plants. Biologically active substances contained in it nourish and tone plants, help to get rid of various diseases, increase resistance against them, significantly improve the structure of the soil, enrich it with nutrients and microelements.

All the beneficial properties of onion scales are literally suitable for all plants. They will be useful for feeding, as fertilizer, for peppers, tomatoes, cucumbers, zucchini and zucchini, pumpkin, potatoes and other vegetable crops. Solutions can be used to treat shrubs and strawberries from pests. And the husk remaining after cooking can be buried under bushes or thrown onto a compost heap. Dry scales can be buried in the soil when digging the beds, thus improving the soil microflora.

It is also known and proven that onion peelings increase the germination energy of seedlings and the germination of the seeds themselves, and surpass in this indicator such well-known biostimulants as Energen or HB-101.

Composition and properties

Onion scales contain substances useful for plants such as:

  • Carotene is a natural immunomodulator and antioxidant that increases the resistance of young plants to unfavorable environmental factors (sudden temperature changes, high humidity, drought, insufficient lighting). Carotene participates in the process of photosynthesis at the cellular level and is responsible for the supply of oxygen to all parts of the plant.
  • Thiamine - in the process of interaction with phosphoric acid, forms cocarboxylase (a compound that accelerates cellular metabolism). The action of thiamine provides an active growth of the vegetative mass and the development of a strong root system.
  • Quercetin is a flavonoid with antioxidant and antimicrobial effects. Thanks to this component, metabolic processes are accelerated and plant immunity is strengthened. Especially a lot of quercetin is found in the scales of red onions.
  • Nicotinic acid is a substance that strengthens the roots and has a beneficial effect on the overall development of plants. Reacting with thiamine, nicotinic acid accelerates the production of chlorophyll in leaf plates, and also promotes the rapid absorption of phosphorus and nitrogen fertilizers.
  • Phytoncides are essential substances with antimicrobial, antiviral and antifungal properties.

For feeding garden and garden plants, onion peel is used in dry form, and nutritious infusions and decoctions are also prepared from it.

Onion peels as flower fertilizer

Onion peels are also used for flowers, this application is not limited to indoor plants. A decoction of husks is used in the same way for flowers in the garden, on flower beds, rabatki. If the flower does not grow well, the foliage becomes withered, flowering does not begin, you need to water it once or twice a week with a freshly prepared broth.

The method of its preparation is as follows: add 1–1.5 liters of water to a glass of onion peelings, boil, let it simmer a little over low heat. Cool to room temperature and water the flowers. It is not necessary to filter the liquid, the boiled flakes will complement the fertilization of the soil. You cannot leave the broth for storage, otherwise it will lose its valuable qualities.

The broth is used in the spring, when the plants enter the active growth phase and are preparing for flowering. At the same time revitalizing indoor flowers, the broth will scare away midges and other insects from the pots.

For potted plants from the windowsill, which begin to dry out or turn yellow, you can prepare an infusion of peelings of two bulbs and a liter of water, leave for a couple of days, then water. Simple and effective!

For cacti, aloe and ficuses, it is not recommended to use onion husks, because this leads to their slow development.

Onion peels as flower fertilizer

Onion peel for the garden

Those interested in organic farming should study the nuances of using such fertilizer and natural insecticide as onion peel. She is able to saturate the soil with the necessary substances, to protect plantings in the garden from the Colorado potato beetle, aphids, ticks, moths, thrips and other pests.

Useful properties of onion peels

Composition and useful properties

Onion husks contain many valuable mineral and biologically active substances that nourish plants, promote their quality development, and protect against pests and diseases. Before using onion peels for the garden, study its main organic elements:

  • phytoncides - concentrated on the surface scales of the onion, protect the plant from damage by harmful bacteria, fungus.
  • carotene - is considered the life-giving power of plants, the largest amount is found in carrots, but there is plenty of it in onions. The substance helps to grow high-quality seedlings, increase the resistance of crops to various diseases. Carotene is especially recommended for places with poor ecology, high gas content. Remember that the substance destroys harmful microorganisms (especially rot and fungus), is a natural immunostimulant that suppresses the formation of free radicals.
  • B vitamins - the more there are, the more valuable the product is. From the husk, rich in these vitamins, very useful infusions are obtained.It is recommended to water young seedlings with nutrient complexes: this helps to stimulate growth, strengthen the leaves and stems of plants, and prevent the appearance of root rot.
  • a nicotinic acid (vitamins of the PP group) - an essential component for high-quality processing of nitrogen and sulfur. The development of culture as a whole depends on the presence of this substance. Nicotinic acid helps to occur the necessary oxidative reactions in living cells, to improve the process of root formation, which is very important when keeping plants in heavy soil.

How to use onion skins in the garden

Onion peels are used as fertilizer for the garden and for:

  • mulching soil
  • disease prevention
  • scaring off parasites
  • fight against viral, bacterial diseases.

Using onion peels in the garden

For pest control

Peeling onions effectively eliminates a huge number of pests. Unlike ready-made chemicals available in specialized stores, onion peels are completely safe for plants. It will saturate the crops of the garden with useful substances, scare off pests. Apply cleansers against:

  • Colorado potato beetle
  • apple moth
  • aphids
  • earwig
  • thrips
  • fleas
  • spider mite.

Water or spray in the garden in the early morning or at sunset, otherwise the solution that gets on the foliage will burn them. Use the recipes for preparing the working fluid, indicating its concentration for irrigation and spraying:

  1. Universal composition - take 2 handfuls of onion peel, pour 10 liters of warm water, cook for 3-5 minutes, remove from heat, cover, leave for 4 hours. Before use, dilute 2 liters of liquid with 10 liters of water
  2. Concentrated solution to combat thrips, spider mites - 1 liter jar of onion peel, pour 2 liters of warm water, leave the mixture for 2 days, strain, dilute with water in a ratio of 1: 2, add 1 tbsp. l. shavings of laundry soap. Treat foliage on both sides.
  3. Composition against aphids on tomatoes, cucumbers - 1 tbsp. pour 10 liters of boiling water on the onion husk, wait 12 hours, strain. Spray the affected plants or wash the foliage. Processing is carried out every 4 hours. After the destruction of aphids, the infusion can be used for prophylaxis: spray the composition every 2 weeks.
  4. A decoction will help get rid of the Colorado potato beetle, moths - pour 3 handfuls of peel with 3 liters of water, cook the mixture for 5 minutes, leave under a closed lid for 4 hours. Before using 1 liter of concentrated liquid, dilute with 5 liters of water.

Preparation for spraying plants with onion peels

What diseases of horticultural crops is used against

    Dry husks, concentrated onion infusion or decoction will help to cure garden plants. Cleaners effectively deal with:

  • black leg - for treatment, use poison or infusion, for prevention - dry husk, adding it to the soil.
  • downy mildew or downy mildew - often affects cucumbers, appears at different stages of culture development. Prevention and treatment are carried out by spraying the infusion: spray the plants at the first signs of damage - the detection of drooping, wrinkled leaves, yellowish spots on their outside. Regular processing is carried out every 5 days.
  • bacteriosis radish, cabbage - infusion is used for treatment. Spray treatment.
  • bacterial cancer tomatoes - the infusion is used for spraying and watering.
  • Signs of bacterial cancer

    Dry onion husks as fertilizer

    The use of onion husks in the garden consists in mulching and fertilizing the soil to improve the growth of garden crops. Feed the plants in the garden in the spring or fall, while digging the beds. In addition, the husk can be added to the soil when planting seedlings in the garden: add a handful of the peel to each hole. If you want to use the cleaners as mulch, then chop them up and scatter them around your garden crops. In this case, you will fertilize the plants, disinfect, mulch the soil.


    Use the broth as a top dressing and natural insecticide. It helps to get rid of:

    • aphids
    • moths
    • thrips
    • spider mite
    • different types of flea
    • Colorado potato beetle.

    Onion peels before use

    The cooking process differs in that the mixture is brought to a boil. The infusion time is 3-12 hours. Here are some popular methods for making a nutritious decoction:

    1. Take 2 handfuls of onion husks, add 10 liters of water, bring the mixture to a boil, cook for 5 minutes, leave for about 4 hours.
    2. Pour the onion peel with water (proportions 1: 2), boil the mixture for 3-5 minutes, leave for 1-2 days.

    Onion husk infusion for plants

    This dressing is used for vegetable, berry, fruit garden crops. Fertilize with infusion:

    The infusion is effective for cucumbers in the greenhouse. The composition prevents the reproduction of pathogenic microflora, which is a common problem when growing crops in greenhouses. Use the infusion for tomatoes as well. Water the plants at the root: 1 liter of working fluid is enough for each bush. Spraying is carried out until the foliage is completely wetted: thanks to this treatment, the formation of many ovaries is stimulated.

    Onion husk infusion for plants

    Top dressing is effective for seedlings: it promotes their growth, protects against bacterial, viral infections, for example, from:

    • black leg
    • different rot - black, gray and other types
    • powdery mildew
    • causative agents of tuberculosis
    • different bacterioses.

    The preparation of a nutritious, disinfecting infusion includes heat treatment of onion peelings. Learn about the common options for creating a healthy fluid:

    1. Pour the onion skin with warm water (40-50 degrees), cover with a lid, put in a dark, warm place, wait 15-20 hours.
    2. Pour 20 g of husk with 1 liter of warm water, leave for a day, in the dark.
    3. Take 1 part of the cleanings and 2 parts of warm water, combine the components, leave the mixture for 3-5 days. This recipe is effective not only for nutrition, but also for the destruction of pests. Add 1 tbsp. l. shavings of household soap or green potash soap, which improves the adhesion of the working fluid. Spray all affected plant areas with the prepared solution.

    Advantages and disadvantages of using

    Top dressing with onion peelings is characterized by one drawback, which is the difficulty of collecting raw materials: it must be harvested all winter.

    The benefits of fertilization are as follows:

    • Money is saved because fertilizer does not need to be purchased.
    • Effectively affects the growth and development of garden plants.
    • Safe for humans, garden crops, animals.
    • Fights pests, so there is no need to use potent poisons, chemicals that are dangerous to plants.
    • Heals diseases.
    • It is used for the prevention of various diseases of vegetables, berries, fruit crops.
    • Can be used for compost.
    • Thanks to top dressing, vegetables and fruits are better stored in winter, they can easily tolerate temperature changes.
    • Husk is an excellent mulch, which contains much more nutrients than the foliage of trees, shrubs, and grasses.
    • The infusion or decoction is prepared quickly. To do this, you do not need to additionally purchase expensive formulations.



    Not in all cases, onion husks are beneficial to plants. If they are excessively weakened or severely affected by pests, it is pointless to feed and process them. All folk remedies are aimed only at preventing problems, so they may not show the necessary effectiveness. It is not advised to use the agent against plants that are painfully responsive to feeding. Solutions by their aggressive action can harm plants.

    Onion hulls for a vegetable garden or garden are used as fertilizer, used as a growth stimulant and are a powerful insecticidal agent. Not a single modern chemical or bacteriological preparation possesses a set of such qualities, therefore, the benefits of plant raw materials cannot be overestimated. The benefits and harms of onions in the garden must be weighed before using the component. It must be remembered that if the doses are exceeded, the composition can negatively affect the vegetation.

    Watch the video: How to Control Pests in your Garden, 3 Organic Sprays Im USING This Year

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