>(Though I have no idea what "frost heave" is: can
>anyone enlighten me?)
While this is mostly referring to pavement you'll get the idea:
http://www.pavement.com/PavTech/Tech/Fundamentals/fundfrost.html
I think he basically means places where the ground freezes real hard in the winter. Like where I live (Winnipeg). Though parsley's a perennial here too.
Oliver
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