field of purple cranesbill in public park hasenheide in berlin in the summer sun

city berlin hasenheide park honey collecting nectar bees bee bloom wildflower pollinate pink insect macro violet nature balkanstorchschnabel geraniaceae felsenstorchschnabel macrorrhizum storchschnabel gardening summer pollen pollination blossom green petal flora plant purple spring garden wild flower geranium cranesbill honeybee botany