Rinse sinus with neti pot, shower and shampoo before sleep and frequently change your pillow case. These things get rid of pollen in your hair and what is on your skin that you can't even see. Pollen gets transferred from hair to pillowcase too. Was a game changer for me.
When I do any real yard work, I wear a mask.
I use a Netty bottle and rinse my sinuses, use Flonase, and a nasal inhaler called a Boom Boom Stick I got at Walgreens. It helps the allergies and the migraine attacks. Benadryl at night if needed
I vacuum under my bed regularly because of the dog hair that accumulates. It's actually helping! Allergies are a trigger for migraine for me.
I have been using Flonase this year, pulmonary Dr suggested it.