our chickens eat our mint and we had to fence our entire garden in to keep them from pecking & eating or tomatoes. You will have to fence off your flowers at least 4 ft high........they can go over a 3 ft fence. throw them some corn to peck in....I also give them the old marigold buds. Then we have yokes that are orange red........also they love the tossels from the corn and soft tomatoes cut old, I also chop soft cucumbers. Our chickens are very spoiled, we have neighbors bring down the carrott skins & potatoes skins..........we also rinse and dry out egg shells and give them............they also eat all the bugs down there their favorite is ticks...