Here is a partial list of stuff when I was most allergic: Chocolate, strawberries, wheat, corn, nuts, mold, grass, hay, pollens, plants, trees, dried leaves from the fall, dust, cats, dogs, and bird feathers. Almost anything that rubbed against me caused me to breakout in welts or hives. It was just not any particular season, it was all year round. Interestingly enough, I was never allergic to any shellfish (thank God). I have outgrown the food allergies, but still have the others.
I am finally feeling better though. It now takes about a week of recovery until I feel 100% better. Allergies really suck. It could always be worse though so I usually only complain during the really bad weeks.