How do I anchor an umbrella?

I have a childcare in my home and their outside area to play is in rocks and needs shade. I have several umbrellas, but one which is largerand is in need of an idea to stabilize it so it won't fall over. Right now I am using sand bags which are inside of old dog food bags. I did this because the sand bags do not last a winter and a hot summer in CA. The problem is in the past I have sewn the bags shut but this doesn't last long even if I use outside thread. Any ideas? They love climbing on them but the way they are the sand eventually comes out.
q how do i anchor an umbrella

What is the easiest way to build a mow strip.

Right now I have river rock in my flowerbeds. This looks awesome but the rocks always get moved and in my husbands way for mowing. I would like to put in a cement border to keep them at bay and making mowing easier.
q what is the easiest way to build a mow strip

Christina Brashears
Christina Brashears
About meI love to craft! Via: photography, woodworking, gardening, montage video making, stamping, card making, children's artwork, tole-painting, Shabby Chic decorating, decorating with old antique rusted things in the house and yard.