onions inbetween crops?

I was told today that if i get a plot i should plant rows of onions in between my other crops as insects and things dont like the smell of them has anyone heard of this or does any one do this? Is it true?

Kind regards Nicky

I have heard that garlic can repel some things, they are in the same family so i guess so?!?

Vampires  :shock:

It all depends on the crop. I've tried it but the onions suffer due to shading from the plant, or nutrient/water loss to the other plant. Sometimes the onion roots get crowded out and both plants don't do their best. Unless you've a lot of space for your plants, I wouldn't bother. However, some of the companion planting duos do work well. Louise Riotta's books are the best on the subject. Where I need garlic as companions, I grow the wild garlic and don't worry about how well they do/don't perform since I'm growing my main garlic separately. It's the smell that works, not particularly the plant.

I plant garlic around all of my veg - the slugs hate them.
Just use 1 segment   where  and in a few months you have new bulbs of garlic.

Now there's a thought    Much cheaper than pellets.