Pests on the plot can appear at any time on a fruit crop. Onions are no exception in this case.
But there is no need to panic. Any insects can be gotten rid of.
However, you should not rush to use chemicals. It is much safer and more reliable to pay attention to folk methods, which are not inferior in their effectiveness.
There is only one simple way to save your onion and carrot harvest. To do this, alternate planting these two vegetables in the beds.
Why this method?
Everything is simple here.
Onions are excellent at repelling flies that harm carrots, and carrots, on the contrary, repel parasites that harm onions.
If you don’t want to alternate crops, you can plant them next to each other.
Experienced gardeners also note that it is advisable to treat the plantings with Fitosporin twice a season. In this case, the plants will be protected from diseases.