Itchy English Bulldog?

She may have a grass allergy. Dogs with grass allergies may also be allergic to wheat in their foods.
Also, if you have used fertilizer on your lawn recently or a new home cleanser or detergent to wash the dog bed, that could be the problem.
See the vet. If you can rule out allergies, chemical sensitivities and skin parasites/fungus, your dog may have dry skin.

Flax seed oil added to the food - OR - vitamin e oil gelcaps given daily (low dosage... high dose could cause bleeding problems) may be very helpful if the cause is dry skin.

You may also want to apply non-colored, unscented aloe gel to the itchy sites.

My guinea pig had dry skin over the winter, with no evidence of skin fungus or parasites... just a couple scabs where he had been scratching. I used aloe gel on his skin (Lily of the Desert brand), and his dry skin healed up within a week.

I would strongly encourage you to enlist the help of your veterinarian to get to the bottom of this problem. I hope it turns out to just be dry skin!