They’re called “seasonal allergies” because each type of pollen has a season where they’re most potent. Here’s a general timeline of common pollen seasons:

https://intermountainhealthcare.org/blogs/topics/live-well/2018/06/10-easy-ways-to-beat-seasonal-allergies-when-the-pollen-count-spikes/#:~:text=They’re%20called%20%22seasonal%20allergies,September%20in%20a%20warm%20year

Author Nathalia P