Answer: Unfortunately, gravel beds are an excellent seed germination environment, as you are discovering. Routine raking of the gravel and mulch (disturb only the top inch of it or so) can limit germination of weed seeds. Also rake off autumn leaves and any grass clippings that may fall there to prevent them working their way down into the gravel and creating a compost type layer which encourages seed germination. You could also use a pre-emergent weed preventer product such as corn gluten.
Q&A Library Searching Tips