Sharing a pest like the western flower thrip with onions, as both cabbages and mint do, certainly isn't ideal. But thrips are ubiquitous (even in greenhouses), so how detrimental mint is to onions ...

My question though, could an ornamental onion or allium hybrid with landscape beauty do the same for pollinators ... Space your plants 15 to 20 inches apart. The flowers are called rose purple ...