Do you have need to label an area of your garden? Let me suggest using press-on vinyl letters. These are available in more interesting fonts than the usual “name on the mailbox” block lettering as well as classic fonts such as Helvetica.
C-Thru Vinyl Letters, 4-Inch, Nuevo Font, Black (RPN4-CN BLK/15859)
I used these to label the cutting garden and test gardens in my landscape.