Surrounding my allotment

I have my allotment at a farm but after we have completed our building work at home I am having a mini allotment at the front at home. Unfortuantely we have a family whosse children help themselves to flowers and walk all over private property etc and I do not want my hard work to be ruined and touched. Any ideas for surrounding the beds?

I have seen some lovely work here for beds.

Logi06

 

sorry to seem a little ignorant, but if this is at your home and on your land can you not just fence it off? also perhaps approach the childrens parents if they are trespassing on your land.