The carrot fly is a rather unpleasant pest of carrots, parsnips and celery.
If left unchecked, two generations of insects can grow in just one season thanks to your garden bed.
Let's figure out how to get rid of the voracious pest without resorting to chemicals.

How to treat carrots against carrot fly
The carrot fly does not like the smell of onions and marigolds, and also likes shade and humidity. Therefore, you can protect yourself from it by growing onions next to the bed, scattering marigolds between the rows and not forgetting to thin out the plantings.
And if the pest has already appeared, then the plantings can be treated in the following ways.
As mentioned above, carrot flies do not like the smell of onions, therefore, an effective remedy against them will be a solution of onion peels.
Take 400 grams of husk, pour 5 liters of hot water, let stand for two days. After that, the solution needs to be filtered and sprayed on the beds.
Wood ash, which should be sprinkled on carrot tops, will also help.