I have a very large red maple in the centre of my garden. Yesterday, as we walked down the path, my DiL noticed that it was covered with little red 'aeroplane' seeds, like the seeds spread by sycamores, only tiny. In all the years I've had that tree, I've never noticed these seeds, my green weeping acer doesn't have them. The couple who are doing some work on my garden noticed the seeds and they also said they had never seen these before. I frequently find little sycamores growing where they're not welcome, so are my neighbours going to find mini maples in their gardens?