Onion thrips has recently been identified as a pest of floriculture crops in Ontario.
Outside of Ontario? Well, this still may apply to you, as a recent study in France also indicated that up to 47% of pest thrips in floriculture greenhouses were Onion thrips. So, this issue could be wide-spread.
This post will help you identify if you are dealing with Onion thrips (OT) along with Western flower thrips (WFT), and what to do about it.