On the other side of the churchyard here, there are several ash and sycamore trees, and when the wind is in the South West, they chuck all their aeroplane seeds all over our house and garden, such that the gutters get clogged up pretty damn quick!
Today, I unblocked the conservatory gutter on the South wall, and nearly got drowned by the deluge of about a million gallons of water and those blasted seeds and leaves...