u/Crunx

We have these raised flower beds in our garden. The issue is that thr soil escapes through the garden between the stones.

This is an old photo and these beds are now full of established plants, making it hard to add any kind of lining to prevent the soil from escaping.

Im looking for advice on how to seal these gaps or and small plants that could grow used as a natural barrier.

The drain in front of our French doors is full of leaves. Im unable to remove the drain cover due to the door sill. Is there anyway to remove the sill to access the drain. Sorry if this is a obvious question.