Funny enough the parts of the lawn that are still grass are what force me to go out and mow it before the seed heads start spewing pollen. Though if you’re allergic to the hay too (curiously, I’m not) you have my sincere sympathies. That said, even if I didn’t have bad grass pollen allergies, I’d still have to keep the grass from getting too big because deer/dog ticks will start to host there, especially with all the critters we have running around.
Most of my yard (not tiny, but not big either) is clover/legumes now, and I only mow it once it’s seeded and matured, to encourage a new flush of flowers for the bees/flies/beetles and such. As a bonus the clover tends to push out the catsear too.
I’m also fond of my mint patch, and all the little mint moths fluttering about it.
It’s all parts of the grass, and most trees, plus myriad other things. My legs always itch if I walk outside in nature wearing shorts. When I did the test where they poke you with a box of allergens on the back, my entire back was basically reacting.
I am currently doing weekly shots in an attempt to fix the issue.
Fun fact: people are not "allergic" to pollen, they are having a legitimate immune reaction to pollen deploying enzymes that cut up proteins in your respiratory tract. This is because pollen is "designed" to chop up similar proteins when it lands on a flower.
So how does it not bother some people?