Asarum canadense
Tue, 12 Jul 2011 17:12:16 PDT
On 11 Jul 2011, at 21:51, Roy Herold [NW of Boston] wrote:

> ...Asarum europaeum ... is one of our most invasive aliens.


It survives here, but invasive? No way! I think it cares not for the long 
summer drought we experience every year. In fact, if you trouble to water it in 
the summer, A. europaeum makes a rather elegant open ground cover here.

Moral to the story: if the authorities concerned with drawing up lists of 
invasive plants have IQs greater than a boll weevil's, they will take into 
account that what's invasive in one climate is not invasive in another. This of 
course poses a problem in a large country like the US with widely varying 
climate. The problem is compounded by a coterie of hysteric (and quasi-
Stalinist) native plant enthusiasts who would love to see all exotics outlawed, 
but who conceal their true objective during their involvements with said boll 
weevils. Ooooopsie! I meant "authorities".

BTW, does anyone know of an easily accessible (sc. online, in English) key to 
the genus Asarum? I grew "Asarum grandiflorum" from RHS seed many years ago, 
but bedamned if I can see any difference from our local A. caudatum.

Rodger Whitlock
Victoria, British Columbia, Canada

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