Flower count - WAS: What makes erythroniums bloom?

Adam Fikso adam14113@ameritech.net
Mon, 12 Apr 2010 09:38:40 PDT
Thanks, Jane.  I was afraid of that.  Foothills only.
----- Original Message ----- 
From: "Jane McGary" <janemcgary@earthlink.net>
To: "Pacific Bulb Society" <pbs@lists.ibiblio.org>
Sent: Monday, April 12, 2010 11:27 AM
Subject: Re: [pbs] Flower count - WAS: What makes erythroniums bloom?

The question was
>Re: Erythronium tuolumnense:  What is the coldest temperature that anyone
>has grown this at?   Or- what is the highest elevation at which it grows.?
>I know that Tuolumne Meadows at 8600 'has gotten to -14 ° F, and I assume
>that it might be found there.   Having read recent postings,  I think I 
>this to be in my garden in Illinois.

The name of the plant does not refer to Tuolumne
Meadows, but to the Tuolumne River, which rises
near and runs through the plateau on which the
Meadows lie, and to Tuolumne County, where this
species has its very narrow range. The
erythronium grows lower down, reported at 600-950
meters elevation. At that elevation winter snow
cover would not be continuous, but winter
temperatures would not drop much below 20 F/minus
12 C. 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.

Jane McGary

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