Tar in gardening for protection against pests. Birch tar: use in gardening and horticulture. Birch tar for beetles

This is one hundred percent wonderful. natural remedy repels a whole galaxy of pests, including such persistent ones as wireworms and the Colorado potato beetle. In general, before you run out to buy chemicals, we advise you to study our reference table on the use of birch tar to protect your garden.

Birch tar for pests

Pest	Cultures	Application of tar
Colorado beetle	Potatoes, eggplants, peppers.	Preparation of a solution for spraying: for 10 liters of water, take 10 grams of birch tar and 50 grams laundry soap.
Onion fly	Onion.	30 minutes before planting, pour 1 kilogram of onion sets into a tight bag, pour 1 tablespoon of tar on top, then mix everything for a long time. If the onion is already growing, but you did not have time to process the set in advance, when the feather is 10 centimeters in height, spill the onion with a solution: 1 tablespoon of tar and 20 grams of soap per 10 liters of water. After 2 weeks, repeat watering.
Cabbage butterflies	All types of cabbage.	Rags are wrapped around the pegs, which are then dipped in birch tar. Pegs are placed around the cabbage bed. The smell of tar repels butterflies; they do not land on cabbage, which means they do not lay larvae.
Wireworm	Potatoes, carrots and other root vegetables.	Preparation of the solution: take 1 tablespoon of tar for 10 liters of water and leave for an hour. Potato tubers are moistened in this solution before planting, or holes or furrows are sprayed from a sprayer before planting seeds.
Cabbage fly	Cruciferous vegetables: cabbage, radishes, daikon and others.	Preparation of the solution: take 1 tablespoon of tar for 10 liters of water. Sawdust is watered with this solution, which is then used to mulch the beds with cruciferous vegetables.
Pale-footed gooseberry sawfly	Gooseberries, red and white currants.	In one liter of boiling water, dissolve 100 grams of grated laundry soap, a pinch of ash and 2 tablespoons of tar. Dilute the mixture with five liters of warm water. Spray the bushes several times during the season.
codling moth	Apple.	For 10 liters of water, take 10 grams of birch tar and 30 grams of soap - this solution is sprayed on trees and the soil under them during flowering. Also, inside the crown of the tree, bubbles are hung one-third full of tar.
carrot fly and carrot psyllid	Carrot.	Twice a season (in June and August) water the carrots with the following solution: for 10 liters of water, 1 tablespoon of birch tar and 20 grams of laundry soap shavings.
Gooseberry moth	Gooseberries and all types of currants.	For 10 liters of water, 2 tablespoons of tar and 30 grams of laundry soap shavings - the bushes are sprayed with this solution before flowering begins. Then containers with tar are hung inside the bush.
Raspberry-strawberry flower beetle	Raspberry.	Before the buds appear, the bushes are treated with a solution of birch tar: 2 tablespoons of tar per 10 liters of water.
Cherry sawfly	Cherry.	When young leaves bloom, spray the cherries with a tar solution (1 tablespoon of tar and 30 grams of laundry soap per 10 liters of water). After 7 days, spraying is repeated.
Plum moth	Plum.	In May, plants are sprayed with a solution of birch tar at the rate of 10 grams of tar and 50 grams of laundry soap per 10 liters of water.
Sprout fly	Pumpkin: cucumbers, pumpkins, zucchini, squash.	Vegetable seedlings are spilled with a solution: 1 tablespoon of tar per 10 liters of water.
Sea buckthorn fly	Sea buckthorn.	Containers with birch tar are hung inside the bush.
Mice	Root vegetables, potatoes, fruit trees and bushes.	To protect trees and shrubs in winter period with the onset of the first cold weather before snow falls tree trunk circles trees and bushes are mulched with sawdust soaked in tar solution: 1 tablespoon per 10 liters of water.
Hares	Young fruit trees and bushes.	Prepare whitewash for trunks: 1 bucket of mullein, 1 kilogram of ready-made whitewash, 50 grams of birch tar, diluted with water to the consistency of thick sour cream. The trunks are coated with this mixture to protect against hares.

Birch tar you can buy it at the pharmacy, stock up and start scaring away harmful insects and rodents. If your area exudes a tar “aroma,” pests will avoid it. Perhaps the neighbors too :))

We wish you success and great harvests!

Tree resin (tar) contains a huge amount useful substances that help resist various diseases and pests. Birch tar is a unique natural gift that has long proven itself positively.

This natural remedy can resist various pests. It will protect anyone land plot no worse, and most likely better, than the most modern insecticidal preparations.

Colorado beetle

This particularly persistent pest destroys not only potatoes in its path, but also other vegetable crops – sweet pepper, eggplants. Spraying special solution will get rid of the beetle and will not harm the vegetable plantings.

The solution contains water (10 liters), birch tar (10 grams) and ordinary laundry soap (about 50 grams).

Onion fly

It's better to start with prevention. Before planting onions in the beds, they must be treated with tar. To do this, put the onions in a durable plastic bag, pour a little tar into it and mix thoroughly for half an hour. For one kilogram of onions you will need a tablespoon of birch tar.

Already planted onions, which have not been processed in advance, can be watered with a solution that includes water (ten liters), laundry soap (about 20 grams) and tar (1 tablespoon). It is recommended to carry out such watering twice with an interval of fifteen days.

Cabbage Butterfly

All types of cabbage suffer from this beautiful and delicate insect. Its larvae are capable of destroying the entire crop. It is necessary to fight the butterfly in time - before the larvae begin to lay. The smell of birch tar will prevent this pest from entering cabbage beds.

To combat cabbage you will need ordinary wooden pegs. small size, unnecessary pieces of fabric and tar. The fabric is soaked in tar and wrapped around each peg. The pegs prepared in this way must be evenly distributed over all the beds.

Wireworm

To rid root plants of this pest, it is necessary to treat the holes or directly the tubers (potatoes) before planting the seeds. Add 1 tablespoon of tar to a large ten-liter bucket of water, let it stand for 1 hour, and then spray the place where the seeds are planted. Potato tubers are completely dipped in the solution before planting.

codling moth

You can protect apple trees by spraying. Add 10 grams of tar and 30 grams of soap to a ten-liter bucket of water. This solution must be treated not only flowering trees, but also the soil around the trunk.

carrot fly

Twice during the summer (at the beginning and at the end) watering is carried out with a special solution prepared from water (10 liters), grated soap (about 20 grams) and birch tar (1 tablespoon).

Plum moth

To combat it, you will need to spray (at the end of spring) with a solution consisting of 10 grams of tar, 50 grams of soap and 10 liters of water.

Sprout fly

Mice

These rodents are capable of destroying not only root crops, but can also damage fruit trees. It is recommended to mulch tree trunk circles sawdust, which were soaked in a water-tar solution (water - 10 liters, tar - 1 tablespoon).

Hares

The smell of birch resin will also repel these voracious rodents - pests. In the fall, it is necessary to treat each tree trunk with a specially prepared mixture.

Composition of the mixture: birch tar (50 grams), dry chalk (1 kg), mullein (1 large bucket) and water. The mixture should be medium thick.

Buy birch tar at any pharmacy chain and pests will avoid your garden and vegetable garden.

Material prepared by: Yuri Zelikovich, teacher of the Department of Geoecology and Environmental Management

Tar has been used in gardens and gardens for a long time as a repellent - a means of repelling pests with a smell. Tars are complex substances chemical composition, formed during thermal decomposition (pyrolysis) of wood. The best natural supplier of tar is birch. Birch tar is obtained by pyrolysis of the cork layer of birch bark - birch bark, therefore in commercial preparations (see below) the names birch tar and birch bark tar are one and the same.

Note: It is quite possible to distill birch bark into raw tar with your own hands, see video:

Video: how to “extract” birch tar

Advantages and disadvantages

The use of tar in the garden against harmful animals gives a trace compared to pesticides. advantages:

The drug is effective against pests from systematic groups as far apart as possible - from mollusks and insects to mammals.
Does not cause resistance in targets to be eliminated.
It does not require complex expensive equipment to work with it.
Safe to use: basic PPE is needed: latex gloves for hands; It is advisable to wear a gauze bandage and safety glasses on the face.
It does not destroy objects of elimination, therefore pest tar is suitable for controlling animals that are harmful on the site, but in wildlife useful - hares, moles.
Has a long lasting protective effect– from 20-30 days to the full growing season.
It can be used in a non-contact (for plants) way, see below, which completely eliminates the effect of treatment with the drug on the crop.
There are no negative after-effects from the systematic use of tar on the site.

However, the disadvantages of tar as a pest repellent are significant:

Repels equally beneficial insects, therefore, it is not applicable as part of plant bioprotection measures against pests.
Also not applicable for fruits and edible green mass, because accumulates in all parts of plants. However, there is no need to fear an overdose: the harvest will gain bad smell and taste a lot earlier.
For the same reason, it is not suitable for treating indoor plants.
In tank mixtures it is incompatible with most agrochemicals.
It is insoluble in water, so preparing working solutions is difficult (see below), and they must be used within 1-2 hours to prevent the mixture from separating.
Concentrated tar is toxic and contains carcinogens and allergens. As a result, working solutions with it must be prepared with precautions for substances of hazard class 3 (also see below).
Parts of the sprayer nozzle stick strongly. If it is non-removable or cannot be washed with organic solvents, you will have to spray the plants the old-fashioned way - with a broom from a bucket.
For treatment by spraying, the mandatory use of an adhesive is required; however, inexpensive - laundry soap.
It stinks, clothes stained with tar cannot be washed.

Which one is better?

Moonshine tar is free, but is the least effective and contains greatest number harmful substances. Therefore, it is advisable to use purchased birch tar in the vegetable garden. varying degrees cleaning (from left to right in the figure below).

Purified tar no longer looks like a black slurry, but a dark brown translucent substance. By the way, working mixtures from it remain homogeneous not for 15-20 minutes, but for more than an hour. The most expensive, but also the most effective substance is perfume. Perfume tar is used for aromatherapy and adding piquancy to odors. For both, the drug is used, of course, in microdoses.

Note: In the late 70s and early 80s, a sensation was created by men's cologne with the smell of... the upholstery of a brand new Cadillac. However, hunters of rich suitors and swindlers, with their inherent instinct, immediately figured out that the smell of a car for 100 thousand dollars and she herself are not the same thing, and she herself and the same money in the victim’s account are even more so. “If before, when you married a guy with a cool car, you became the wife of a real guy, now you’ll most likely end up with a middle manager with an unpaid loan.”

Almost equivalent to perfume, but much cheaper than medical tar. Veterinary is not much cheaper than medical, but is only slightly more effective than moonshine. But tar soap, although it contains a ready-made adhesive, it is not very effective as a pest repellent. There is very little tar in it, in a dose safe for humans, which almost does not repel pests.

Precautions

As stated above, concentrated tar substance is a substance of the 3rd hazard class. Moonshine tar can also have a 2nd class. Harmful substances it contains more than enough, see video:

Video: harm and benefits of tar for a gardener

It is necessary to store tar preparations not quite according to the usual rules for agrochemicals. Locked in a separate room inaccessible to children and animals, this goes without saying. But, if biological products are used on the site, they cannot be stored in the same room, much less in the same cabinet with tar.

You need to prepare working solutions and mixtures with tar using a petal respirator instead of a gauze bandage (see above). You also need to prepare a bottle of alcohol or vodka or household (not fuel!) gasoline or kerosene. If tar gets on the skin, it is immediately removed, without rubbing, with a cotton swab moistened with a solvent (preferably 2-3 swabs in succession), and then the affected area is washed with soap and water.

Who does tar scare away?

As a repellent, tar in the garden is most effective against objects of elimination that have a keen sense of smell and wholly or partially lead an underground lifestyle, because in the ground active ingredients tars last longer. These factors mutually reinforce each other. Based on this, the repellent effect of tar on different groups Pests are divided into 3 categories:

Severe – lasts more than 30 days. As a rule, one treatment per season is enough for the objects of elimination to remove themselves from the site in all directions;
Medium – lasts up to 30 days, but is stable;
Mild – lasts less than 30 days. In cold weather it weakens or stops.

Tar drives away mole crickets, moles, voles and gypsy moths most strongly, see figure:

The latter does not live underground, but its males have an ultra-fine sense of smell: they find females by smell from kilometers away. The tar stench disrupts the search for mating partners, and the population in the surrounding area dies out. But, if you also have large, beautiful and harmless pinnate butterflies (for example, large night peacock eye - pear peacock eye, artemis peacock eye, ocellated toothed moth), then they too will disappear. You can also not expect visits from specialized pollinators such as hawk moths after treating the area with tar. You can get rid of mole crickets with tar at once for the entire season, see for example. video:

Video: tar against mole crickets and mice

Medium tar drives away Colorado potato beetles, white butterflies (cabbage moths), codling moths, moths, phytophagous flies (onion flies, cruciferous flies), larvae of click beetles (wireworms), sawflies, other rodents, hares and slugs, see figure:

The use of tar against these pests is completely justified, because allows, if not to expel them completely, but to greatly reduce the dose of pesticides and the costs of them. How to use tar to make it easier to fight the Colorado potato beetle, see the story:

Video: processing potatoes with tar

Note: slugs have almost no sense of smell, but crawling on surfaces treated with tar, they become poisoned and die. That is, for them tar is already a more cumulative poison than a repellent.

Finally, tar weakly repels ants, elephant beetles and weevils, adult click beetles and bronze beetles, see next. rice. Fighting these pests with tar alone is unlikely to be successful. Ants – foragers and herders of aphids – may die from tar, but their loss is generally no more sensitive to the anthill as a “superorganism” than cutting hair or nails is to us. It is possible to expel ants from a site with tar only if the anthill is outside its boundaries and measures are taken to combat aphids. Then the “superorganism” will redirect the foragers to another place, and force the shepherds to transfer the aphids there.

Methods of application

Birch tar is used against pests. ways:

Non-contact – installation of odor emitters. Effective against moles, rodents, hares, butterflies, flies, sawflies, beetles, slugs.
In traps - trapping belts and circles. Effective against rodents, hares, slugs, ants.
By treating the seed - it works against mole crickets, wireworms, and rodents.
Watering the soil for sowing with a suspension - the effect is the same.
By spraying plants with a suspension (necessarily with an adhesive) - it acts on all harmful insects, except for mole crickets and wireworms.

Contactless

This method is good because you can successfully use moonshine tar. In the garden, small containers, for example, tin cans, perforated in the upper half, are hung 3-5 m apart from each other. In berry gardens, the same jars are placed on pegs that are stuck into the ground in each bush. Place rags heavily soaked in tar in the container. As the substance dries, the filling of the emitters is changed. To protect cabbage plants from whiteweeds, kvass are prepared - pegs wrapped with a rag on top. Kvashas are dipped in tar and stuck into the ground among the plants after 2-3 m - there will be no oviposition.

From moles and rodents

It is even easier to expel moles, hamsters and marmots from the area with tar: the holes are plugged with rags soaked in tar. Difficulties can only arise with hamsters: if this redneck has already begun to stock up for the winter, he will not leave. Therefore, you need to chase hamsters with tar in the spring.

Traps

First, make a stinking mixture: 1 kg of ready-made whitewash for trees (lime and clay 1:1; you can use copper sulfate 20 g per bucket) add 2-3 kg of dry ground mullein with stirring. The seed is prepared in a bucket. When the mass has become homogeneous, add water to the 12 liter mark (top level on galvanized buckets), mix thoroughly again and add 50 ml of tar while stirring. The resulting mixture is used to whiten the trunks/trunks of hares for the winter. From ants, small rodents, etc. – impregnate the material of hunting belts and circles with it. If the area is not heavily infested with rodents, before winter, mulch the tree trunks with sawdust, prepare a suspension (see below) from 10 ml of tar in a bucket of water and pour it over the mulch at the rate of 2-3 liters per 1 sq. m. m.

Dressing and watering

Pest tar is used to treat the seed of potatoes, root crops and onions. In the first case, in a suspension of 10-20 ml of tar to 10 water, the seed is soaked for 3-5 minutes (dipped). For 1 kg of onion sets in a tightly tied plastic bag pour 1 tbsp. l tar and shake the bag for a long time until the mordant is distributed evenly. The material is kept for an hour. Treatment is carried out immediately before sowing.

If it was not possible to pickle the material for some reason, prepare a suspension of 10-20 ml of tar and 40-50 g of soap per bucket of water before sowing, see below. Under the potatoes, pour 150-200 ml per hole. Onions and root vegetables are watered at the root for the first time, when the shoots grow half a palm long; again after 2 weeks. Watering rate is 1-2 liters per 1 m of bed.

Spraying

A suspension for spraying and watering with tar is prepared. way:

1 liter of settled rainwater or distilled water is heated to a boil;
while the water cools to 70-80 degrees (so that it steams), grate laundry soap;
soap shavings are gradually introduced while stirring into hot water until all the soap has dissolved;
The mother soap solution, cooled to warm, is poured into 9 liters of water in a thin stream while stirring;
also, while stirring, add a measured portion of tar into the solution.

Technology to help

Further, if you sprayed using the “grandmother’s” method, you had to immediately go to the site, dip a broom in the suspension, stirring it 2-3 times each time, and spray. Atheist summer residents preferred church sprinkler instead of a broom: there is no need to disturb them, and the splashes are finer.

Modern technology makes it possible to save the worker from tedious, and for a believer, blasphemous, procedures, and to obtain a tar suspension suitable for filling into the sprayer tank. To do this, after step 5, an ultrasonic device is immersed in a bucket with the mixture for 15-20 minutes. washing machine. Don't know what it is? For clothes - and rightly so, after ultrasonic washing they quickly tear. But to prepare a homogeneous tar suspension that is stable for 1-2 hours, this device, like a soap box on an electrical cord, is just what you need.

Insect tar

Plants are treated against insect pests with a tar suspension by watering, soaking in mulch and spraying. Treatment of certain crops against specific types of pests is carried out as follows:

Note: For information on using tar against cabbage pests, see also the video below:

Video: tar against cabbage pests

Together it is more capable

In tank mixtures, tar is incompatible with almost all synthetic pesticides and biological products. Nose minerals and natural extracts combine well. Their complex use is synergistic, i.e. works better than the same substances taken separately. Therefore, in conclusion, see the video on how to prepare a “hellish mixture” for pests with tar:

Video: an effective mixture containing tar against various pests

Birch tar is birch tree resin. It is used in cosmetics, healing, veterinary medicine, as well as in gardening for protection against pests. It is an irreplaceable substance for the garden.

In this article we will look at the features of using birch tar to combat various.

Use in the garden

Birch tar has a specific smell and taste, and a special oily consistency.
It is these properties that help in the fight against garden pests. Tar is not poisonous.

Important! Birch resin does not kill pests, but repels them with its foul odor.

Colorado beetle

To combat the Colorado potato beetle, it is necessary to treat it with tar. To do this, two methods are used: treating tubers and holes before planting and spraying potato seedlings, and later shoots.

and - only shoots before fruit appears. For the solution, you need to dilute 1 tbsp. l. tar for 1 bucket of water. It does not dissolve well in water, so experienced gardeners recommend first mixing the resin with a solution of laundry soap (soap - 50 g), then with water.

Onion fly

The pest most often affects and. To combat it, birch tar is also used in two ways. You can soak the seeds before planting in a mixture of substance and water: 10 g of tar per 1 liter of water.

While the fly is laying eggs, you can treat the beds two or three times (after 10-15 days) and water them with the following solution: 20 g of tar for 1 bucket of water.

carrot fly

The insect attacks root crops - b, etc. To protect the harvest, it is necessary to treat the plants twice: in June and August. will not help, you need a plant solution.

Here it is necessary to add household goods to the solution. soap: for 1 bucket of water 1 tbsp. l. tar and 20 g of soap. Water the plants at the roots.

Cabbage fly

The fly affects all cruciferous plants in the garden:, etc. Soaked in a solution of birch resin will help you get rid of this garden pest: 1 tbsp. l. for 1 bucket of water.

These sawdust are used to cover the ground under the plants. The smell will repel insects.

Cabbage butterfly

Cabbage butterflies are dangerous because they lay larvae on cabbage leaves that eat the plant during the seedling period or the head of cabbage at the ripening stage. The smell will scare you away again. The most effective way would be to wrap rags soaked in tar on pegs and place them around the cabbage plantation.

Wireworm

Affects potatoes, carrots, beets, etc. In the fight against this pest, plant treatment will differ. Potatoes must be treated with a solution before planting in the ground, and plants that are planted with seeds must be watered.

Did you know? Tar was the first product that Finland began to export in the 1500s.

The solution is the same: for 1 bucket of water, 1 tbsp. l. resinous substance. Leave for 1 hour.

Application in the garden

Garden pests can attack leaves, bark, roots and, of course, fruits. That's why we're fighting them in different ways. The use of tar in gardening is very popular.

codling moth

The codling moth pest must be controlled during the flowering period. Trees are treated with a solution: for 1 bucket of water, 10 g of birch resin and 30 g of soap. Small containers with tar can be tied to the branches.

Gooseberry sawfly

The pale-legged gooseberry sawfly affects and. To combat this pest, a special mixture is prepared. 100 g household shavings soap, 2 tbsp. l. tar and 1 tsp. dilute with 1 liter of boiling water. Add 5 l warm water and spray the bushes 3-4 times per season.

Gooseberry moth

This garden pest, like the sawfly, affects gooseberries and all types of currants. To combat it, it is also necessary to spray the bushes with the solution described above, only without ash. For 1 bucket of water - 30 g of grated soap and 2 tbsp. l. tar. Treat before flowering. Later, hang containers with pure birch resin on the branches.

Raspberry-strawberry weevil

This pest is called a flower beetle. It can also be expelled by treating the bushes before the flowers appear. It is necessary to dilute 2 tbsp in 1 bucket of water. l. tar.

Cherry sawfly

To combat this pest, a single treatment is not enough. When the leaves just begin to bloom, you need to spray the cherries with a solution. Repeat after a week, then as needed. Solution: for 10 liters of water, 30 g of laundry soap, 1 tbsp. l. resinous substance.

hawthorn

Here the pest is not the hawthorn butterfly itself, but its caterpillar larvae. They damage leaves and other garden trees. Caterpillars destroy both leaves and flowers.

In May-June, tar spraying is carried out in several stages: with the appearance of the first leaves and flowers (April), with the awakening of caterpillars (May), before the flight of butterflies (beginning of June). Traditional mixture: 30 g household goods per 10 liters of water. soap, 1 tbsp. l. birch resin.

The important thing is that you need to spray not only the leaves and flowers, but also the ground under the trees.

Plum moth

Treatment in May, when the trees have just faded and the fruits have begun to appear, will help get rid of the plum moth. Spraying mixture: for 1 bucket of water 1 tbsp. l. resin and 50 g of laundry soap. As in other cases, you can hang containers with a resinous substance on the branches.

Spider mite

This tick is very harmful to. It also affects garden plants. Tar emulsion will help fight it. Recipe:

boiled water - 1 l;
granulated sugar - 2 tsp;
purified gasoline - 2 tbsp. l.;
birch tar - 1 tsp;
liquid soap - 1 tsp + liquid dishwashing detergent - 1 tsp.

Add the ingredients to the water in the above order, with constant shaking. Be sure to shake before use. After processing, a varnish shine will appear on the leaves. The stickiness and oiliness will also remain for a long time.

Aphids and ants

We are considering methods of fighting aphids and ants in pairs, because ants are most often bred under those garden trees, on which there are aphids. To get rid of aphids, you need to use both the resin itself and tar soap.

Before planting, onion sets are soaked in birch tar in order to get rid of putrefactive bacteria and fungi.

Onion tar is a natural and environmentally friendly alternative to store-bought preparations for controlling onion pests and diseases. Birch tar protects seedlings especially well from onion flies.

For 24 hours, keep the onion sets on the radiator at a temperature of 38-40 degrees. This is my grandmother's ancient way of preparing onions for planting.

Peel as much of each onion as possible. There is no need to completely peel off the husks. Only suitable for landing healthy and strong bulbs. Anything that is wrinkled, rotten or dry – throw it away without regret. Why breed diseases and pests?

Use nail scissors to carefully trim the top of each bulb. Of course, it's long and boring. But the trimmed bulbs will be driven out more intensively green feathers, and what the more powerful the greens of the onion, the larger the harvest will be.

Soaking onions in tar before planting - dosage

Soak the onions before planting for 2-4 hours in a solution of birch tar. Dosage: 1 liter of water at room temperature + 1 tablespoon of tar.

While soaking the onion sets stir occasionally so that all seed material is completely saturated with the tar solution.

Birch tar has antiseptic effect, copes well with pathogenic microbes and fungi. And its cloying smell cannot be tolerated by the onion fly.

It’s also not very pleasant to humans, to be honest, so it’s better to carry out this procedure somewhere in utility room or on the street.

You need to treat onion sets with tar before and after planting.

Watering onions with birch tar

Immediately before planting onion sets in open ground the furrows need to be watered with a solution of birch tar: 1 tablespoon of tar per watering can.

The fact is that the onion fly begins its flight and active reproduction is already in April!

Therefore, it is in the spring and early summer that it is necessary to water the onions with tar to scare them away. If the summer turns out to be rainy, the onions will have to be watered with tar several times. The solution should get onto the onion leaves and under the root.