For those hard to reach public spaces, the guerrilla gardener has a weapon: seedbombs. Richard Reynolds shows how to make them at home - and how to use them.
I can't watch vids either . My idea of a seed bomb is to wrap the branches from a male and female plant around each other and let them stand till the end . This is real effective in corn fields come harvest time when they get ran over by a combine scattering seed everywhere .
basically, two variations. One wraps compost clay and seeds into balls or "bombs" which can be chucked into hard to access areas. The other is the same idea but applied with a blowdart type tube, to get the seeds to reach the desired location...