One of the most common plant pests you may have never heard of is thrips. The destructive power of thrips may be as destructive as aphids or mealybugs.
Thrips It is a slender and slender insect that feeds on plant sap. There are more than 6,000 different species in the world.
Adults are only 1/25 inch long and can be black, brown, or yellow, while nymphs are usually light green or yellow.
These pests inject their eggs into plants. Although the life cycle is only 45 days, as many as 15 generations of offspring can live together in a growing season.
To make matters worse, thrips live in flowers, leaves or under tree bark, and overwinter underground.
Thrips can cause a lot of damage, hinder plant growth or cause plant deformities, discoloration and kill flowers. Agricultural products may not mature, making them inedible.
But how to get rid of them without using harsh chemicals?
Is neem in the garden effective against these pesky pests? Please read it carefully to find out the answer.
Can you use neem oil to remove thrips?
The good news is Get oil It can indeed kill thrips.
The bad news is that you may need to be extra careful because thrips can infect flowers such as rhododendrons and rhododendrons.
What is the role of neem oil
Neem oil is a natural extract Neem, Produced by cold pressing of parts of plants, especially leaves and seeds.
Raw neem oil contains five insecticidal chemicals, the main of which is azadirachtin.
Azadirachtin has a chemical composition similar to insect hormones, and when ingested, it can cause damage through a variety of possible effects.
It can prevent the nymphs from entering the next instar, effectively causing them to die under the condition of a minor.
In adults, it can cause infertility, and in many species, it can also cause loss of appetite, which can cause insects to starve on their own.
When azadirachtin is removed for use in commercial pesticides, the resulting clear, hydrophobic azadirachtin oil becomes a local killer.
These forms of Neem Insecticidal Soap can block the respiratory tracts of insects that come into contact with them, causing them to suffocate.
Dealing with the risk of blooming
There are three common ways to use neem tree:
- Foliar spray
- Soil soaking
- eat cake
The most popular of these methods is foliar spraying, but it does have a major disadvantage for outdoor plants.
Because neem oil can kill beneficial insects, including bees and ladybugs, you must spray it at dusk or dawn when these garden friends are least active.
In addition, it is generally recommended to avoid spraying flowers to reduce the risk of harming bees, and you cannot spray near the hives.
Related: Is it safe to use neem around bees?
Therefore, when fighting thrips, try to use foliar sprays only indoors so that you can safely handle the rest of the flowers and plants.
Neem Foliar Spray
As mentioned earlier, spraying on neem leaves is the most popular method of using neem, although they are the least efficient.
You must cover the entire plant for the spray to work, including the underside of the leaves and any cracks or crevices.
Generally, you also need to avoid spraying flowers on flowering plants.
However, this may be a useful attack method for indoor plants and vegetable gardens or plants that are currently not flowering.
Mix 1 teaspoon of Dawn dish soap or pure castile soap into a gallon of water to make a lotion.
Mix 2 tablespoons of clear, hydrophobic neem oil (1% for most infections or 2% for severe infections is recommended) and pour into a spray bottle.
Spray the whole plant at dusk or dawn to get every small crack.
Neem will dissipate in about 45 minutes to an hour without leaving any residue.
Note that it may last longer in cracks or between petals of dense flowers such as roses, so try to avoid spraying flowers outdoors.
You need to repeat the treatment every other day for 14 days or until the infection disappears.
As a precaution, reapply every two weeks.
Neem soil soaking
The less popular but more effective is Neem soil soaked or soaked.
This is similar to the formula of foliar spray. Only use 100% cold-pressed raw neem oil instead of clarified neem oil.
Depending on the size of the plant, you need to pour 2 to 3 cups directly on the soil around the roots to ensure the radius of coverage.
For large plants such as trees, you may need to use a full gallon of water to properly cover the root radius.
We usually recommend this method because it is easier to use on larger plants, does not harm beneficial insects, and lasts longer.
Neem will kill harmful ground pests, such as larvae, without harming earthworms.
When the roots absorb azadirachtin, it becomes a systemic insecticide, which only harms insects that bite or pierce the skin of plants.
In addition, it even helps fight some fungal and bacterial infections, including root rot.
Azadirachtin is effective for up to 22 days, so it is reapplied every 2 to 3 weeks to keep the plants healthy and protected.
Least frequently used eat cake It is the solid left after extracting neem oil.
They are mainly used as fertilizers and contain trace amounts of neem.
According to the instructions on the package, you can use neem cake to protect the soil from thrips overwintering and to feed the plants.Neem cake is also effective against Lawn larva And other ground pests throughout the year.