Dear Uli, I grow a number of different species of Arisaema in three different beds in my garden without any problem. I know definitely that mice eat the flowers of my hellebores and squirrels eat the crocus bulbs though I have yet to identify what the rabbits, foxes and badgers eat. Pheasants and pigeons eat the leaves of crocuses. Paul, In Kent UK where the brief snow has gone, but the several frosts have burnt magnolia and camelia blooms