Re: tanecetum and veronica

In a message dated 8/28/00 10:23:30 AM Eastern Daylight Time, 
mrwill1@juno.com writes:

<< Could any of you tell me why tanecetum niveum "Jackpot" should be listed
 as zones 7-9 in one catalogue and 4-9 in another? 
 
 Also, would you propagate veronica prostrata "Trehane" by division or
 cuttings? Any hints? >>

I don't know Tanacetum niveum "Jackpot" but assume it is a selection of the 
species.  That being so, it is hardy in my zone 4 garden.  This plant seeds 
around in the summer, germinates in late summer and produces a clump of 
grey/green mum-like foliage.  The following spring it triples in size and 
making a rounded shaped white daisy covered mound.

Having bloomed, the plants are never so nice the next spring so I pull them 
out.  They behave as a biennial here having maintained themselves for many 
years.  An older plant gets a woody base, a younger plant blooms more freely. 
 This year's seedlings are germinating now.

That Veronica 'Trehane" - would it be the gold colored leaf?   If so it is a 
creeper/mat former and probably is rooted along some of it's new growth 
already. That would make it an easy plant to divide.  

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