Gardening

Control of pests and diseases: 26 ecological remedies

Do you need an ecological remedy to eliminate pests from your garden, orchard or farm? In ecological or organic agriculture we can use a multitude of natural remedies for the orchard and garden without the need to resort to pesticides to combat pests.

However, I would like you to understand that the most interesting thing in the ecological management of pests is learning to prevent them with very beneficial agroecological techniques such as crop rotations , the correct associations between plants , biodiversity or the use of polycultures (you can see more about pests here ).

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26 ecological remedies that we can use in organic farming 

– Infusion or maceration of tomato for aphids

You only need 500 grams of the leaves and stems of the tomato plants. You cut them into pieces about 5 cm long and put them in the bucket or container made of hard plastic or another material that resists well the boiling water. Then you add boiling water, cover partially and let it rest in a dark and cool place for 24 hours.

Strain and pour into a spray bottle to apply on plants that have aphids infestation. Apply for 5 to 7 days twice a day: first thing in the morning and late in the afternoon.

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– Water for the mite and aphid infestation

In the case of aphids, you just have to pour very very cold water into a spray bottle and spray the aphids with it. This simple remedy is very effective to get rid of aphids, yes, remember that the water must be cold.

For mites, this remedy is also effective, since they do not like humidity at all. Spray the plants where there is a mite infestation several times a day and in a few days the mites will be gone.

– Garlic for aphids, fungi, nematodes and mites

You need a whole head of garlic that we will put in 2 liters of boiling water. It is not necessary to peel the garlic, although it is recommended to crush them. Cover the container and marinate for 8 to 12 hours.

Then we strain and spray the plants with pests with this solution, twice a day for a week.

We can also bury garlic cloves around the plants that we want to protect to ward off aphids.

– Wormwood for mites, mealybugs, ants and aphids

You need a tablespoon of dry absinthe (a heaping tablespoon) or 200 grams of fresh absinthe to which we add 1 liter of very hot water. Partially cover the container and leave to marinate for 48 hours.

After that time, strain and spray the plague plants two days in a row twice each day, one in the morning in the early morning and another in the late afternoon. If it is necessary to apply it more times, leave another two days of rest between applications.

– 96º alcohol for cochineal

This remedy can be great for small scale pests of mealybugs, because it requires patience.

You need 96º pharmacy alcohol and a cotton swab. Soak it up with alcohol and pass it through each mealybug. It may take time (if the pest is numerous) but it is very effective and selective, since it does not affect beneficial insects in the garden.

– Baking soda for fungi: powdery mildew and mildew

If fungi have appeared on your plants such as powdery mildew or mildew, don’t worry, there is an ecological and very cheap solution to eliminate them.

You need 2 liters of water and a tablespoon of baking soda. Mix well and spray on the affected plants. To amplify the effect and if the disease is very advanced, you can add a teaspoon of neutral soap.

Spray once a day for 4 days in a row. Let it rest for 2 days and apply again if necessary.

– Ash for pests of snails and slugs or limacos

Snail and slug pests can be devastating, have a ferocious appetite, and are capable of causing extensive damage in orchards and gardens.

One of the ecological remedies that we can use in the case of these pests is ash. With the ash we managed to stop their advance.

You just have to apply the ash on the ground and around the plants you want to protect. If it rains or if you water, the operation will have to be repeated.

– Basil for pests of aphids, moths, worms, mosquitoes, flies or mites

Crush 500g of fresh basil leaves (use only 250g if you use dried leaves) and add 2.5 liters of hot water. Cover the container partially and let it marinate for 72 hours.

After this time we strain and spray the affected plants with it. Repeat twice a day for 4 days. Let it rest for a week and apply for another 4 days twice a day if the plague persists.

– Laurel for pests of weevils, aphids, ants and mosquitoes

For these types of pests you need 150 g of fresh bay leaves or 80 grams of dried leaves. Put them in a container and add 5 liters of hot water. Cover it (but not completely) and let it marinate for 24 hours.

Then we filter and apply with a spray twice a day for 3 days. We rest another 3 days and repeat if necessary.

– Horsetail for aphids, whiteflies and fungi

Put 100 grams of horsetail cut into portions of no more than 5 cm in a container and add 3 liters of hot water. Cover partially and marinate for 24 hours.

Filter and spray on the affected areas twice a day. Repeat for 4 days in a row.

– Pompadour or marigolds for whitefly pests, bed bugs, ants, aphids, worms and fungi

Crush 200 grams of fresh pompadour leaf and add 3 liters of hot water. Let it marinate for 24 hours in a dark and cool place. Then we filter and spray on the plants you want to treat.

Apply once a day for 4 days in a row. Let it rest for 3 days and repeat the treatment if necessary.

– Onion for aphids, carrot flies and fungi such as mildew and rust

You need 250 grams of crushed onions, it is not necessary to remove the skin or peel. Add 3 liters of boiling water. We cover the container a little and leave it to marinate for 24 hours in a cool and dark place.

Strain and store in a container with a spray to apply it on the areas to be treated. We will spray twice a day for 4 days in a row.

– Orange peels or peels for pests of slugs or limacos and snails

Another ecological remedy that we can use when we have a plague of snails and slugs in our orchard or garden are orange peels.

You just have to place large pieces of the orange peel with the whitish part facing downwards, thus forming a refuge where slugs and snails will come. Place them in damp and dark places and check them in the morning to remove them.

– Neem or nim for pests of thrips, whiteflies, leaf miners, spider mites, caterpillars and nematodes

100 grams of fresh leaves or 50 grams of dried leaves are macerated in 3 liters of water for 8 hours in a container that is almost covered. Leave it in a place where it does not receive light and is cool.

After 8 hours we filter and spray on the areas with pests twice a day, one in the morning in the early morning and the next in the late afternoon. Use for 4 days in a row and then wait 5 days to repeat again if necessary.

– Nettle for plague of whitefly, mites and aphids

Nettle, in addition to fighting some plants, has the great benefit of strengthening plants. You need 250 grams of fresh nettle leaves or 100 g of dried leaves. Mash them a bit and add 2 liters of boiling water. We keep it in a cool dark place for 24 hours.

Strain and apply twice a day for up to a week. Repeat if necessary but leave 4 days of rest between treatment and treatment.

– Cinnamon for mushrooms

Cinnamon is a very effective ecological remedy to combat fungal diseases due to its antifungal effect.

You just have to sprinkle the cinnamon on the substrate and avoid overwatering, but try to use drip irrigation when watering because this prevents fungi from reappearing.

– Vegetable oil for mealybug infestation

You can use sunflower oil, olive oil, etc. to apply in case of cochineal pests.

We are going to apply the oil with a small brush or with a well soaked swab on each cochineal.

It is very effective.

– Oregano for fungi and mealybug pests

Take 100 grams of fresh oregano leaves or 80 grams of dried leaves, crush them lightly and add 3 liters of boiling water.

Let it marinate for 12 hours and then strain it. Apply twice a day by spraying on the affected areas. Repeat for 4 days in a row and let it rest for 2 days before reapplying if necessary.

Growing oregano in the orchard or garden provides protection to plants against pests in general.

– Valerian for weevil pests

Besides being very useful to strengthen the general state of the plant and protect them from frost, it also favors flowering and fruit formation.

Put 100 grams of fresh valerian leaves or 50 of dried leaves in a container and add 1.5 liters of boiling water. We let it rest for 24 hours and then we strain it.

Apply by spraying the affected plants twice a day for 3 days. Let it rest for another 2 days before repeating the treatment.

– Comfrey to strengthen plants

This plant has the ability to increase the resistance of plants to pests and diseases.

Prepare an infusion with 50 grams of dried plant or 100 g of fresh plant. Add 2 liters of boiling water and let it steep for 6 hours.

Then it is strained and added to the irrigation water in equal parts.

– Eggshells for pests of snails and slugs or limacos

Reuse egg shells to combat snail and slime pests. You just have to crush them into small pieces and place them around the stem of the plants, leaving about 10 cm of separation.

– Tansy for the pests of ants, aphids, nematodes, mealybugs, worms, caterpillars, moths and lice

This home remedy for pests is prepared by crushing 100 grams of fresh leaves and marinating in 3 liters of water for 8 hours. Strain and mix with another 2 liters of water.

It is applied twice a day for 4 days in a row.

– Beer for pests of slugs or slugs and snails

Place small bowls or bowls full of beer that should be placed in dark and humid places in your garden and garden, which are places where slugs and snails like to take refuge.

Check them every morning

It is very effective

– Rue for whitefly pests

Prepare an infusion with 200 g of fresh rue leaves or 100 g of dried leaves. Let it rest for 4 hours and then strain it.

Apply by spraying the areas where the plague is and repeat once a day for 4 days in a row.

– Nasturtium for plague of aphids, snails and ants

With 100 grams of fresh nasturtium leaves or 50 of dry leaves we make a maceration by adding 2 liters of water. We let it rest for 24 hours in a dark and cool place.

Then we strain it and apply it by spraying on the plants that need it. Repeat once a day for 5 days in a row.

– Ladybugs or vaquitas, wasps and insectivorous birds

They are our allies when it comes to preventing all kinds of pests in gardens and orchards.
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