There is probably not a really easy solution to all those issues. The Bermuda grass can be stopped by installing a vertical barrier about 8 inches deep around the bed. This may not be practical. You could also continue to use the weed barrier cloth making sure to control any Bermuda that crawls up on top of that. There are grass only weedkillers a work quite well for this. For the birdseed I suggest using a shop vac to pick up the seeds on the surface. The only other thought would be to have some type of Matt or screen on the soil surface to catch the seeds. You would then have to dump the seed off of the mat periodically.
Thanks for the question. Please stop in again soon!
Q&A Library Searching Tips