Flower count - WAS: What makes erythroniums bloom?

Roy Herold rherold@yahoo.com
Mon, 12 Apr 2010 10:11:30 PDT
Jane McGary wrote:

> This plant is widely grown in the Pacific 
> Northwest in areas where winter lows in the 
> mid-teens F are common. However, that does not 
> mean it will thrive in Illinois, where it will be 
> subject to summer rainfall and warm night temperatures.
> 
Interesting that Telos Rare Bulbs lists E. tuolumnense as Z4-8. Or is 
this a copy of those oh-so-reliable Dutch descriptions?

That said, E. helenae appears to come from a similar low elevation 
environment (Chaparral, Yellow Pine Forest, Foothill Woodland), yet is 
doing well in our Z5-6-7 environment (pick a number, any number) with 
all that summer rainfall and many warmish nights. Is this to be expected?

Also, are erythroniums self compatible, or does it take two to get seed?

--Roy
NW of Boston
First flower open on E. helenae today


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