By the time you've paid out for proper glazing you will be better off buying a new pot or stick with the cracked one hoping it doesn't go any further, and I'm sure the bay tree won't mind. I don't know if you know but they don't like windy areas the leaves get 'wind burn' place in a sheltered area.
Bob
September 2010
I can answer this question...
how can i fix my slightly craked glazed garden pot(new)?
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix glassware.