Concrete curbing is not only decorative, but it really helps keep the grass from growing into the flower beds, reducing a lot of weeding and a lot of work for you. However, if you get a lot of the dirt that's washing down the flowerbed and just covering up the concrete curbing, that grass, like it's doing right here, is just going to continue to creep, and creep, and creep, and then your flower bed is just going to get covered with grass and other weeds. Make sure you do a really good job of keeping these concrete curbs nice and clear so that you don't have that dirt, and the grass doesn't creep in over time. Hope this saves you some time. If you have any other questions about Draper lawn care, please let us know and I hope you have a great day.