It's better to wait until the pollen count is mostly over in spring before cleaning your windows. The flowering period can last from mid-March to May.

Apple, pear and cherry trees are mainly responsible for the pollen. After the tree blossoms, the grass pollen is still on the way. However, these cause far less pollution than the pollen in spring. It's not just pollen that regularly causes dirty windows. With the right technology, Saharan dust can be easily removed from window panes - without leaving streaks. It is best to choose a day when it is cloudy to clean your windows - when the sun is shining, the windows would dry too quickly and leave unsightly streaks. You can find everything about household and garden tips in the regular living newsletter from our partner Merkur.de. Click here to sign up for the weekly newsletter. Back to the page you came from. The Daily Discussion: Share your gardening tips and tricks with CNN iReport.