catkin cream England pollen Salix sallow spring Sussex tree yellow blossom branches english fluffy fuzzy Great Britain natural nature stamens field flood green landscape meadow plant stream Suffolk water bank Devon flow peace placid river sleepy tranquil uk united kingdom animal diptera fly hoverfly insect perch sit clouds country countryside evening February goat willow grass great sallow hill hills polish Pussy Willow shadow sky trees winter chairs circular garden hedge lawn leisure relax seat shade shady summer sunny sunshine Surrey tables willow