Allergies? Allergic to grass?

I live in Texas, and it’s so hard for me to do anything outdoors because when I walk through most kinds of grass/forests/hiking trails etc I break out in ridiculously itchy hives, it’s so bad that I’m left with scratch mark bruises up and down my legs.

I generally take Benadryl if I know I’m going somewhere but it makes me tired and it’s only useful if the event is preplanned.

Is there something I can take daily to control the hives so I can do outdoor things spontaneously ie a daily antihistamine?